List of fictional elements, materials, isotopes and atomic particles
|This list needs additional citations for verification. (April 2010)|
This list contains chemical elements, materials, isotopes or (sub)atomic particles that exist primarily in works of fiction (usually fantasy or science fiction). No actual periodic elements end in "-ite", though many minerals have names with this suffix. Some of the materials listed as elements below may indeed be minerals, alloys, or other such combinations, but fictional works are often vague on such distinctions.
Fictional elements and materials
|Adamantium||Marvel Comics, Final Fantasy, Warhammer 40K, Morrowind, Maplestory||Adamantium is a series of closely related compounds of iron mixed with chemical resins. It has been frequently described as being virtually indestructible. Substance of the skeleton of Wolverine.|
|Amazonium||DC Comics||Amazonium is a metal found only on Paradise Island, from which are made Wonder Woman's invulnerable bracelets. It is said to be one of (if not the) hardest metals known in the pre-Crisis DC Universe, along with supermanium (see below) and the 30th century's inertron.|
|Argonite||RuneScape||A mithril-like metal found only in the dungeons of Daemonheim. Not to be confused with the real-world Argonite, a mixture of argon and nitrogen.|
|Bane||RuneScape||A type of element that, when magically "tuned", enhances the ability to maim the creature that it is "tuned" to. Such examples include dragons and basilisks.|
|Bathus||RuneScape||A relatively weak grey metal found only in the dungeons of Daemonheim.|
|Beryillium Sphere||Galaxy Quest||A stable sphere composed of exclusively beryllium that is used to power the Protector's reactor.|
|Beskar||Star Wars||Beskar, also known as Mandalorian Iron is near-indestructible iron. It is one of the only substances that can resist a lightsaber.|
|Black||RuneScape||A type of hardened steel whose name derives from its colour.|
|Blue Alloy||Minecraft, RedPower mod||Blue alloy is created using nikolite and silver and can be used to carry blulectric energy.|
|Bolonium or Bolognium (or likely Baloneyium)||Futurama, The Simpsons, etc.||A fictional element used to describe something as impossible or nonsensical. In the Futurama episode "A Clone of My Own", Cubert Farnsworth used the term "Weapons-grade bolonium" as an insult to his "parent," Hubert Farnsworth's technology demonstrations. An episode of The Simpsons featured an Oscar Mayer promotional periodic table of elements with the element, which states that the atomic weight of bolonium is "delicious" or "snacktacular."
The Star Trek The Motion Picture official blueprints published in 1980 specifically identify the Klingon K't'inga-class battle-cruiser as possessing bolognium engine shields. For Bolonium, not to be confused with real element Polonium.
|Bombastium||Uncle Scrooge||An element each atom of which, when dropped in a barrel of water, is capable of generating a barrel containing a different flavor of ice cream, according to Carl Barks. It is discovered by the Brutopians. Scrooge McDuck pays one trillion dollars and six kitchen sinks for a soccer ball-sized sample of it in an auction in a 1957 story in Uncle Scrooge comics #17. In a Duck Tales story it is used to power a time machine invented by Gyro Gearloose.|
|Brightsteel||Inheritance cycle||"Brightsteel was a special rare metal used to make Dragon Rider swords. It was a metal from a meteorite that crashed in Du Weldenvarden and was subsequently found by Rhunön. When she forged with it, she discovered that the metal had special properties. She scoured Du Weldenvarden for the metal, saving all the brightsteel she could for making the swords of the Dragon Riders. When she was asked to make a sword for Eragon I, she made it out of this material."|
|Cobalt Thorium G||Dr. Strangelove, Big Guy and Rusty the Boy Robot||In Dr. Strangelove it is an element used in the Russians' doomsday device. Both (real) elements Cobalt and Thorium can be used in atomic weapons to increase the amount of dangerous nuclear fallout, which agrees with the sense in which "Cobalt Thorium G" is used in the movie.
In the "Wages of Fire" episode of Big Guy and Rusty the Boy Robot, it is revealed that the BGY-11 is powered by a Cobalt Thorium G power core.
|Brumblium||The Mushroom Planet series||An element discovered by Prewytt Brumblydge in the children's novel Mr. Bass's Planetoid. It's nearly twice as dense as uranium and has a number of scientific uses. It is rare on Earth but the planetoid Basidium (which orbits Earth at an altitude of 50,000 miles) consists largely of this element.|
|Cavorite||The First Men in the Moon||An alloy in H. G. Wells' classic novel that is opaque to all forms of radiant energy including gravity. Manufactured out of a complicated alloy of metals and a "new element... called helium". The alloy in the form of a metallic paste is heated to a dull red glow in a stream of helium].|
|Celestial Bronze||Percy Jackson and the Olympians series, The Heroes of Olympus series||A metal made in Mt. Etna by Hephaestus and used by Greek demigods for weapons and armor. Lethal to Greek/Roman mythological monsters, Greek/Roman gods and Greek/Roman demigods but harmless to normal humans.|
|Corbomite||Star Trek||A fictional substance. See episode: The Corbomite Maneuver.|
|Cryonite||Pirate Galaxy||A hybrid of iron that is used in advanced technology.|
|Cuendillar||The Wheel of Time||A substance that is strengthened by physical strikes. The Dark Ones prison is made of it. See Book 1 WoT: The Eye of the World.|
|Darksteel||Magic the Gathering||A rare, dark greyish metal found on the artificial plane of Mirrodin. Darksteel is effectively indestructible, but in times past it could be forged into artifacts of varying power. Notable darksteel artifact include the Darksteel Colossus and the Darksteel Reactor.|
|Dilithium||Star Trek||A fictional crystalline mineral, in the universe of Star Trek, that is used to regulate the anti-matter-powered warp drives that allow starships to travel faster than light. (Although dilithium is the actual name of a real molecule which is a gas with none of the properties of the fictional crystals, the writers were unaware of its existence.)|
|Dwarven Metal||The Elder Scrolls series||Dwarven Metal Ingots were the metal of choice for the Dwemer. The method of producing these ingots was known only to the dwemer and hence was one of many secrets lost with the Dwemer. Due to the only source of this metal being the dwarven ruins, the metal has come to be known as "Dwarven Metal," named after its creators. This metal never dulls, nor does it rust.|
|Eitr||Norse Mythology, Tomb Raider Underworld||A bright blue liquid, where life comes from.|
|Ebony||The Elder Scrolls series||Ebony is a form of volcanic glass-like material found in The Elder Scrolls V: Skyrim. It is relatively rare, and thus is the most expensive ore and ingot. It is used to create Ebony Armor (heavy armor) and Ebony Weapons. (Distinguish from the real hard black wood (substance) called ebony.)|
|Element 115||Dark Reign||Discovered in the early days of exploration of the out solar system, Element 115 was notable as being a stable element despite having an atomic number higher than 92. The molecular physicist Alpheus Togra discovered that due to the peculiarly powerful "strong" nuclear force that held the nucleus together, he could utilise that to convert the angular momentum from an electron into mass. Togra was never able to complete his research into allowing him to control the reaction to produce desired elements.|
|Elemental||RuneScape||A purplish material that can be made into magic armour. It can be refined into stronger forms by "priming" it with different forms of energy.|
|Element Zero||Mass Effect||Found in the systems of dying stars, this material is used to generate the mass effect fields of many technologies in the Mass Effect universe. Applying a positive or negative charge to this substance reduces or increases the mass of any objects within the emission field. Also found in organics, and the source of biotic abilities. Nodules forming throughout the bodies of most species, such as the Asari. Introduced into human species via alleged experiments by a shadowy government agency.|
|Eridium||Borderlands||Eridium is a purple material and is appropriately named after the ancient precursor race that utilized it, the Eridians. Eridium was released onto Pandora after the vault hunters opened the vault. Along with the discovery of Eridium, Slag, a by-product of refining Eridium, has been used for weapon manufacture due to its unique properties. It can also make Sirens stronger notably Lilith who uses it to boost her powers. It can also be addicting to Sirens to where it becomes their life support. Should the constant flow of Eridium stop, the Siren will die. Eridium is used as a currency in Borderlands 2 to buy upgrades for your character and to unlock raid bosses such as Terramorphous. Not to be confused with real elements Erbium and Iridium.|
|Fractite||RuneScape||A durable grey-ish metal found only in Daemonheim.|
|Gorgonite||RuneScape||A strong grey metal found only in Daemonheim.|
|Gravitium||Tyrian 2000||A powerful material that alters gravitational fields and whose existence is strictly secret.|
|Imperial Gold||The Heroes of Olympus series||A metal used by Roman demigods for weapons and armor. Lethal to Roman gods, Greek/Roman mythological creatures, and Greek/Roman demigods but harmless to normal humans. Not to be confused with real element Gold.|
|Jumbonium||Futurama||Used in Futurama episode Lesser_of_Two_Evils to make the Miss Universe tiara.|
|Katagon||RuneScape||A strong bluish metal found only in Daemonheim.|
|Kratonite||RuneScape||A greyish metal found only in Daemonheim.|
|Kryptonite||DC Comics||A crystalline material, originally in various colors with separate effects, harmful to Kryptonians and created during the destruction of Superman's home planet Krypton; synthesis is also possible. John Byrne's retcon of the DC Comics universe established green kryptonite as a compound and later issues had experiments by Batman and Luthor reestablish the Pre-Crisis versions of red, blue, and gold. Kryptonite has been found in the real world (according to its chemical composition) and has none of the properties or color variations of fictional kryptonite (google real kryptonite found). However, DC Comics had previously described kryptonite as an alien element with a higher atomic number than known Earth elements.|
|Latinum||Star Trek||A very rare and valuable silvery liquid. Gold-pressed latinum is a form of commodity money made of latinum suspended within gold. Latinum is valuable and stable as a commodity money because of its inability to be replicated—a technology, depicted in Star Trek, that can synthesize non-living matter, which would devalue any ordinary precious metal. Not to be confused with real element Platinum.|
|Marmaros||RuneScape||An orange metal found only in Daemonheim.|
|Melange, the spice||Dune universe||The spice melange exists on only one planet in the known universe. It extends life in humans and can cause prescience. It is addictive and withdrawal is fatal.|
|Minovsky Particle, Mega particle||Gundam Universal Century||The two positive and negative Minovsky particles found in the Universal Century will form an I-Field when scattered in space. Depending on its density, it can block electro-magnetic waves and interfere with radar. Mega particle is a neutral version made by compressing the two Minovsky particles and used for powerful beam weaponry.|
|Mithril||Middle-earth, Dungeons & Dragons,The Elder Scrolls IV: Oblivion, RuneScape, Golden Sun, Terraria, World of Warcraft, Clash of Kingdoms, MapleStory||Originally described in J.R.R. Tolkien's Lord of the Rings trilogy, mithril is a durable silvery metal that is very light and extremely strong. Mithril means "grey gleam", but is translated as "true silver". It was mined in native form in Moria. It can also be worked into other forms with unusual properties such as reflecting only the light of the Moon.The fictional metal has expanded to be included in various other fantasy universes, games, and books. "Mythril" appears in the video game series Final Fantasy. Also, "Mithral" is used in D&D books and "Milrith" in Simon the Sorcerer. In the Warhammer world, the High Elven metal "Ithilmar" has similar properties and usage. In RuneScape it is a lightweight purple metal stronger than steel. In World of Warcraft, Mithril is a silvery-white mid-high level mineral. "Mithral" is also featured in the Dungeon Master series. It appears in armor form in The Elder Scrolls IV: Oblivion. It also appears as a light blue metal used to make armor and weapons in MapleStory.|
|Morphite||EVE Online||Morphite is a highly unorthodox mineral that can only be found in the hard-to-get Mercoxit ore. It is hard to use Morphite as a basic building material, but when it is joined with existing structures it can enhance the performance and durability manifold. This astounding quality makes this the material responsible for ushering in a new age in technology breakthroughs.
Morphite exists in EVE Online as the primary building block of "Tech II" manufacturing. In EVE Online, parts and spacecraft with the "Tech II" label boast boosted specifications, boosted performance, and significantly higher market price. Morphite is typically used in conjunction with existing "Tech I" equipment and other artifacts within EVE Online to manufacture these more advanced "Tech II" items.
|Nikolite||RedPower for Minecraft||A turquoise dust that can be used to create other components in the "RedPower" modification for Minecraft.|
|Novite||RuneScape||A weak purple metal found only in the depths of Daemonheim.|
|Obdurium||Dungeons & Dragons||The only non-magical metal stronger than Adamantine in Dungeons & Dragons. Introduced in the 3rd edition "Stronghold Builder's Guidebook" rulebook.|
|Obsidium||World of Warcraft: Cataclysm||A metal found in Azeroth.|
|Octiron and Octogen||Discworld||A dense black metal and a magical gas that is a large part of the Discworld's crust and makes up its atmosphere. Its melting point is above the range of metal forges. The gates of Unseen University are made out of it. It is used to make magic needles and bells. It releases magical radiation, but if it becomes negatively polarized, it can be used to absorb such radiation. According to Unseen University, it generates significant amounts of heat under pressure, accounting for most of the volcanic geological processes on Discworld.|
|Omega||Star Trek: Voyager||An unstable molecule capable of destructive explosions that also disrupt subspace, making warp travel impossible. A 'perfect' energy source, Seven of Nine mentions that the Borg revere it religiously due to its perfection and multiple components working together perfectly. By contrast, the United Federation of Planets will ignore all other considerations, including the Prime Directive, to ensure the destruction of the particle.|
|Omnium steel||Marvel Comics||A ferroalloy stronger than titanium though weaker than adamantium. There is also a form of omnium which possess elastic ductility while retaining high durability, which was somehow employed in a full-body epidermal supplantation procedure on the villainous character Warhawk.|
|Onnesium||GDW Traveller/Marc Miller's Traveller||Rare element, atomic number 118, mildly radioactive and dangerous, which has been proved to be a viable room-temperature superconductor. Onnesium is normally found as small, silvery spheres embedded within meteoric nickel-iron. Never to be confused with ununoctium.|
|Orantium||Beyonders: A World Without Heroes||A rare ore that explodes violently when exposed to air or water. Commonly used a weapon.|
|Orichalcum||Mythology (Atlantis), Fate of Atlantis, Shadowrun, Exalted, Irregular Webcomic!, Star Ocean, Final Fantasy (various), Age of Mythology (The Titans Expansion), The Elder Scrolls V: Skyrim, MapleStory, Dragon Quest Heroes: Rocket Slime||A metallic pink colored metal mined in Atlantis; another name for it is mountain copper. May be based on Auricupride. Used to power machinery in Atlantis in the Indiana Jones adventure game. In the Exalted setting Orichalcum is the strongest of the five magical materials and can be made by distilling mundane gold using Gaia's blood (Magma) and concentrating sunlight using large occult mirrors. Found in Final Fantasy as a rare material with varying properties. In the Soul Calibur series, Sophitia has a sword and shield set named Orichalcum. Used in smithing to craft Orcish weapons and armor in The Elder Scrolls V: Skyrim. In Maplestory it is a fuchsia metal used to craft armors and items. Also named "Orichalcon" in some games.|
|Oridecon||Ragnarok Online||A blue crystal with a shardy and spiky form, its used to forge or refine the strongest weapons, believed to be indestructible, its hard to obtain in its pure form.|
|Polydenum||OtherSpace||A metallic, radioactive, explosive element found in some planetary cores that is mined and refined to become the main fuel for starship sub-light engines in the OtherSpace multiverse, as well as a potent explosive. Never to be mistaken for Molybdenum.|
|Primal||RuneScape||An incredibly strong dark-red metal found only in Daemonheim.|
|Primium||Mage: The Ascension||A material designed by the Technocracy to resist magical abilities. It is also tough enough to be used as armor plate.|
|Promethium||Warhammer 40,000, RuneScape||General term for any petroleum-based fuel used by Imperial vehicles. Variations are used in Imperial flame throwers, described as highly volatile incendiary gel. Unlike the real life napalm, the weaponized Promethium self-combusts on contact with oxygen and can burn even when underwater or in vacuum. In RuneScape it appears as a red high-strength metal found only in Daemonheim.
Not to be confused with real element Promethium.
|Protoculture||Robotech||A fuel source produced from the Invid Flower of Life by the Robotech Masters. It was discovered by the scientist Zor, who would later used it in the development Robotechnology. Eight quarts of protoculture can power a Veritech Alpha Fighter for days; one quart can power a Veritech Cyclone Rider.|
|Protonite||Piers Anthony's Apprentice Adept series||A mineral found only on the planet Proton, it was used throughout the galaxy as a powerful energy source. On Proton's magical alternate world, Phaze, its counterpart Phazite was the source of magic energy.|
|Protosteel||Bionicle||A special form of electricity-conducting metallic Protodermis. The hardest known form of metal in existence, it was created by the artisans of Artakha. It can be damaged by another object made of protosteel, multiple types of disintegrator/laser beams, and a type of metal-eating virus.|
|ProtoZortium||Lilith: Operation Genesis||In Ehud Gat's Lilith: Operation Genesis, ProtoZortium was an alloy of metal that was partially grafted unto biological matters (proteins, possibly). The matter was 20 times more resilient than steel and could partially deflect beam weapons (such as lasers). being quasi-alive, dents and holes would regenerate over time. The super-metal was used for armors of ships and the likes but could also be laced into the bones of a human subject to form a bond that turn the bones nearly indestructible.|
|Psitanium||Psychonauts||An element that can bestow or amplify psychic powers or insanity. Delivered to Earth on a meteorite, Indians used them as arrowheads. In Whispering Rock Psychic Summer Camp, they are also used as currency. Not to be confused with real element Titanium.|
|Purralinium||Doona series, Treaty at Doona||A metal formed by stellar novas. Extremely rare, an even rarer impure form is used in matter transmission technology. Conductive. (Probably an alien (Hrruban) term for an unspecified non-fictional element or compound.)|
|Pyerite||EVE Online||A soft crystal-like mineral with a very distinguishing orange glow as if on fire. used as conduit and in the bio-chemical industry. Commonly found in many asteroid-ore types.
Pyerite is the second most commonly used material in EVE Online in terms of manufacturing. It appears as an orange crystal with an apparent crystalline structure similar to quartz. Its applications within the EVE universe are widespread, and it is required in the manufacturing of almost all in-game blueprints.
The name "Pyerite" is an allusion to the actual geological term of "Pyrite".
|PyrE||The Stars My Destination||The most powerful nuclear explosive ever created. It is activated via a telepathic signal.|
|Pyreal||Asheron's Call||Fictional metal found on the planet Auberean and used as currency and to forge weapons.|
|Quantium 40||Babylon 5||Used to construct jumpgates.|
|Quantonium||Monsters vs. Aliens||A luminous green fluid-like energy described only as the most powerful substance in the universe. It can be found in very specific planetoids or is created in the conditions made by the planetoids when they explode. It can mutate humans' DNA and cause them to grow in size and strength and permanently change the color of human hair, and it appears to have some energizing capabilities on machines.|
|Quassium B||John Pudney's Adventure books||Fictional element which featured in a number of books by John Pudney.|
|Radical Isotope||Andromeda||Radical isotopes are one of ten elements with negative atomic weights. They are used by the Spirit of the Abyss to control beings. Detecting radical isotopes reveals a being in league with The Abyss.|
|Radium X||The Invisible Ray||Radium X was an intensively radioactive extraterrestrial element discovered by Dr. Janos Rukh (Boris Karloff) in the 1936 film the The Invisible Ray. In the film, Dr. Rukh creates a death beam projector which harnesses the incredible power of Radium X for use as a destructive weapon of mass terror. Interestingly, Radium X also had healing powers. In a memorable scene, Rukh restores the sight of his blind mother (Violet Kemble Cooper) with the Radium X projector after developing a filter to curb its destructive effects. According to legend, this scene inspired John Lawrence (the younger brother of physicist Ernest Lawrence) to use radiation on his mother—who had been diagnosed with inoperable cancer of the uterus. Not to be confused of the real life Radium.|
|Randomonium||Scooby Doo 2: Monsters Unleashed||A fluorescent green element which is a viscous liquid at room temperature, it enables costumes to become the creatures they represent.|
|Randsdell's Metal||When Worlds Collide||An infusible metal of extreme strength used to insulate nuclear rocket engine nozzles in the novel When Worlds Collide.|
|Raritanium||Ratchet & Clank||A rare metal that is used for various upgrades in the game. It is also extremely hard and is used to produce armor, and the Omega Doom Blades and the Ryno 4EVER are some of the few weapons that can penetrate it. Its only other purpose is for purchasing the Gold Groovitron, which gives the owner unlimited groovitrons.|
|Rearden Metal||Atlas Shrugged||In Ayn Rand's Atlas Shrugged, Rearden metal is a greenish-blue alloy invented by Hank Rearden. Lighter and stronger than traditional steel, it is to steel what steel was to iron. Among its ingredients are iron and copper, two metals seldom found together in real-world structural alloys.|
|Red Alloy||Minecraft RedPower Mod||This alloy, created by alloying redstone and either iron or copper, is a more functional alternative to redstone.|
|Red Matter||Star Trek, Minecraft ICBM modification and Equivalent Exchange 2 modification||Red matter is a fictional substance that appears in J.J. Abrams' 2009 film Star Trek and the lead-in comic book Star Trek: Countdown. The rare mineral decalithium is processed into red matter that creates a black hole when it comes in contact with nuclear matter. It is used in an attempt to avert an impending natural disaster, and to destroy a planet.
In the ICBM mod, Red Matter is the most powerful substance in the game, being even more so than antimatter. When made into an explosive and detonated, its effects are that of a singularity, contained within a thirty-five by thirty-five meter spherical radius. The only way to eliminate the singularity is to have it come into contact with a rigged antimatter explosive or a second red matter singularity. As such, it is extremely dangerous and difficult to clean up.
In the Equivalent Exchange 2 modification, Red Matter is a high tier material used to make extremely powerful weapons and tools.
|Red Rain||V||A red hued rain which purports to cure effects of global warming, but is actually a form of phosphorus with ill-intention.|
|Red Stone||Fullmetal Alchemist, Minecraft||A reddish stone made with the Red Water, a high-toxic liquid. It is used as an alchemic amplifier, as it amplifies the transmutation power of alchemists. It is also known as the incomplete Philosopher's Stone, because it has similar properties.
In Minecraft, the stone (named Redstone) is portrayed as a red-colored dust when mined from Redstone Ore. It displays properties similar to those of transistors (having only two states – on  and off ), and can be used to make primitive circuitry by use of different logic gates. The introduction of a Red Stone torch, switch, or lever to the circuit serves to supply a source of power to the circuits.
|Relux||Arcot, Wade, and Morey stories||Material created from light; indestructible and totally reflective. Used in the hull of the heroes' spaceships, among other things. See also Lux.|
|Residuum||Dungeons & Dragons 4th Edition||A fine, golden dust that results from disenchanting a magic item. It is sometimes traded as currency, measured by weight. 10,000 gold worth of residuum weighs as much as a single gold piece, with one pound being worth 500,000 gold pieces.|
|Resistium||The Incredible Planet||The "hydrogen" of the "ultra-elements" (which had an atomic structure consisting of a nucleus of "negatrons," orbital protons and without any electrons present in the atom at all), resistium was many times stronger than steel or titanium and had unique chemical and electromagnetic properties. First featured in The Incredible Planet by John W. Campbell, Jr.|
|Rodinium||Star Trek (1966), "Balance of Terror"||At that time, according to Science Officer/First Officer Spock, the "hardest substance known to our science." The fragment Spock holds is from the outpost's protective shielding. The fragment crumbles in his hand, having been exposed to a new Romulan energy weapon.|
|Rovolon||E. E. Smith's Skylark of Space series||Mysterious platinum-group metal, known as "X" by its Earth-human discoverers (see that entry for details).|
|Rune Essence||RuneScape||A material that can contain magic energy, which can be released at the owner's will. A second form named "Pure Essence" is capable of holding more complex energies.|
|Runestone||Lost Kingdoms||A stone that allows the holder to unleash the powers of the monsters trapped within their card decks. Runestone is often made artificially which is less potent.|
|Runite||RuneScape||A light blue metal that is stronger than mithril or adamantite. It is quite rare, and when discovered, miners quickly deplete the source of the metal. Its weight is the same as normal steel.|
|Ryanium||Bioshock||An alloy invented by Andrew Ryan which was able to sustain the structural integrity for the underwater city of Rapture.|
|Sakuradite||Code Geass||An element, plentiful in Japan but rare elsewhere, that possesses incredible superconductive properties. It is used to generate and channel energy in great quantities, and is an essential component of Knightmare Frames' propulsion systems.|
|Saronite||World of Warcraft: Wrath of the Lich King||A very strong mineral found in Northrend. It is usually sickly green or ice-blue. Saronite is the hardened blood of the Old God, Yogg-Saron, who is imprisoned within the Titan vault, Ulduar. Used by the Undead Scourge to build their fortresses and war machines.|
|Schwartz, liquid||Spaceballs by Mel Brooks||A potent spaceship fuel, a small amount of which can propel a space Winnebago incredible distances.|
|Scrith||Ringworld by Larry Niven||A semi-translucent, impossibly strong material, somewhat ductile under massive force, that is used as the foundation of the Ringworld. It has a strength similar to the force which binds atomic nuclei. It also has the ability to hold strong magnetic fields, meaning it is a para-magnetic substance. Compare Neutronium.|
|Shazamium||Shazam!: "The Plot Against The Universe"[volume & issue needed]||Constructed into a bracelet worn by Captain Marvel's mentor, the sorcerer Shazam. Its atomic number is 98; this has since been discovered and named californium. Shazam has to wear his shazamium bracelet at all times, for without it on his arm, he would fade away into nothingness in 24 hours. Captain Marvel's nemesis, Dr. Thaddeus Bodog Sivana, steals the bracelet from Shazam, since it gives ordinary mortals wearing it ethereal form and the ability to penetrate any substance (except marvelium, described above) and allows instantaneous travel between Earth and the Rock Of Eternity.|
|Sheol||Fury3||Sheol, also known as red sheol, is a metal in the game Fury3. The isomorphic decay of this mineral attracts wormholes. Sheol is only found in the topsoil of the planet Ares.|
|Silverium||Motherload||One of many fictional elements mined from Mars. Not to be confused of the real life Silver.|
|Sinisite||Sinistar video game series||A high-energy material occurring naturally in crystalline form, it is found in white (1983 original game) or blue and green (1999's Sinistar: Unleashed) variants, usually mined from asteroids. It is used in the building of pieces of technology, or purified to form the high-explosive weapons known as Sinibombs.|
|Sivanium||Shazam!: "The Plot Against The Universe"[volume & issue needed]||Invented by Captain Marvel's nemesis, Dr. Thaddeus Bodog Sivana. Its atomic number is 97; this has since been discovered and named berkelium. It is "living metal;" when used to construct a duplicate of any life form, especially a human, it will actually live once the duplicate is completed. Sivana tried to overrun the Universe with duplicates of himself consisting of this metal, but Captain Marvel used it to duplicate himself, freeing him to artifice marvelium (described above) and entrap Sivana within a box of it.|
|Sky Iron||His Dark Materials||A superior type of metal used by the panserbjorn (armored bears) of the North, compared to which other metals are worthless. Presumably originates from meteorites. Not to be confused with real element Iron.|
|Solarbonite||Plan 9 from Outer Space||A high-energy substance found on Earth and possibly other planets. It is capable of exploding the particles that make up sunlight itself. If contained in a weapon, it can set off a chain reaction that explodes sunlight, along with anything the exploding sunlight touches, that will eventually destroy the universe, possibly at the speed of light itself.|
|Solarite||Flash Gordon Conquers the Universe (1940)||An unstable mineral with great explosive power found on the planet Mongo. Solarite was to be the ultimate weapon employed by Ming the Merciless against the people of Earth. Described in Episode Twelve, "Doom of the Dictator".|
|Solonite||Battlestar Galactica||A fictional high explosive in the original version of the science fiction series Battlestar Galactica. It may or may not be derived from solium.|
|Solid Protodermis||Bionicle||It comes in various forms. Rock-like Protodermis can be controlled by a Toa of Stone. It was mined and collected with a Sluice in Onu-Koro and Onu-Metru. It is used as a medium for carvings. Metal-like Protodermis can be controlled by a Toa of Iron. Special types of metal Protodermis exist, like the precious metals that the Toa Hagah's armor is made of. Ice-like Protodermis can be controlled by a Toa of Ice. Crystal-like Protodermis is used for the same purpose as glass.|
|Solinium||Artemis Fowl||A fictional radioactive material used by fairies to create short lasting bio-bomb that eliminates any living organism in its radius. The solinium in the bomb has a half-life of 14 seconds, and its radius can be controlled via computer. The depleted form is also used as a homing device sprayed on fairy equipment.|
|Solinite||Star Command: Revolution||A powerful source of energy found within the Zeta Galaxy. Its discovery strained the already-present tensions between the races, resulting in all-out war.|
|Solium||Battlestar Galactica||In original Battlestar Galactica television series, Solium is the Colonial term for Hydrogen. The show's depiction of an explosive fuel that is associated with the Latin term for the sun Sol is a dead giveaway.[original research?]|
|Solium||Blake's 7||A highly radioactive element utilized by the Terran Federation in a neutron bomb-type doomsday weapon to hold down hostile planets without a large military garrison.|
|Soulsteel||Exalted||The newest and the second strongest of the five magical materials, formed by alloying human souls and ore dredged up from the nightmares of dead elder gods that teeter upon the edge of oblivion. They always bring with them the chill of the abyss.|
|Space Alloy Gren||Grendizer||This is the metal utilized to construct the eponymous Grendizer of the anime series Grendizer. The metal seems highly similar to Chogokin Z, another fictional metal used to construct mechs.|
|Spartanium||The Space Eagle: Operation Star Voyage||Derived from rare radioactive platinum ore whose only source is a mine in Siberia. A single gram of the element is enough to power a starship for faster-than-light travel.|
|Specium||Ultraman Dyna||An element found only on Mars, used to power extremely powerful energy weapons.|
|Spice||Spore||Spice is a gaseous substance that erupts from gysers. It can be found on almost all planets in the game. Spice is a valuable trading item among all intelligent species, and it comes in a variety of different colors such as red, yellow and blue.|
|Stardust||Stardust||The remnants of a fallen star brought into the waking world from the magical land of Faerie.|
|Star Metal||Archaic term||An old term probably used to refer to magnetic metals or metals found in meteorites.|
|Starmetal||Exalted||The rarest of the five magical materials, created by the remaining essence of fallen gods.|
|Starmetal||Conan The Adventurer||A metal with magical properties found in fallen meteors. Can be forged into weapons that banish Serpent Men.|
|Stygian Iron||Percy Jackson and the Olympians series, The Heroes of Olympus series||A metal found in the Styx River in the Underworld. Is lethal to anybody. It's only known user in both series is Nico de Angelo, demigod son of Hades. Not to be confused with real element Iron.|
|Stealth ore||Artemis Fowl||A metal that absorbs all known wavelengths of light, making it invisible to all forms of electronic eye. It is very expensive to manufacture.|
|Stravidium||Dune universe||An apparently fibrous component of Plasteel which is described as being "stabilized with stravidium fibers grown into its crystal structure."|
|Stormphrax||The Edge Chronicles||A very powerful material that is created in thunderstorms as the physical result of a lightning bolt. In the dark, it is extremely heavy, but in light, it is volatile. Precisely at twilight, it weighs no more than sand and can be crushed into phraxdust. When dissolved in water, phraxdust purifies it, no matter how contaminated. During the Third Age of Flight, stormphrax powered a variety of objects and machinery, such as lamps, pistols, and mighty vessels called phraxships.|
|Strongium 90||Teenage Mutant Ninja Turtles||Used by gym owner Wally Airhead and his men in the episode "Leonardo Cuts Loose". Provides the user with strength. Not to be confused with real element Strontium, which has a radioactive isotope called Strontium-90.|
|Stygium||Discworld||Dull black metal which heats up in the presence of light; direct sunlight causes it to burn or explode. Typically made into rings which are always worn under a glove, usually by alumni of the Assassins Guild because of the colour.|
|Submarinum||The Tunnel||New element found in the seabed rock of the Atlantic Ocean while building the transcontinental tunnel in Bernhard Kellermann's novel.|
|Supermanium||DC Comics||"The strongest metal known to science!...forged by him (Superman) from the heart of a mighty star!" A metallic ore designed to mimic Superman’s powers, as well as intensify a red star's weak radiation output to render it identical to the far stronger output of a yellow star and even absorb kryptonite radiation. Harder and denser even than the diamond allotrope of carbon, supermanium apparently ceased to exist after the Crisis on Infinite Earths.|
|Supremium||Supreme||An element that gave Supreme his powers of flight, super strength, and more. Supremium appears throughout the comics in many colors, each one with a different reality-altering effect. White Supremium is fatal to Supreme, amber Supremium warps time, onyx Supremium erases time, sapphire Supremium affects probabilities, ruby Supremium transmutes matter, and violet Supremium has random effects which often include transmutation.|
|Synthium||Marooned||In Marooned by John W. Campbell, Jr., the Jovian exploration ship Mercury was constructed from parium and synthium, metallic super elements which had great tensile strength.|
|Tarydium||Unreal computer game||Blue crystals that the enslaved race of Nali is forced to mine; Tarydium shards also serve as ammunition for the Stinger weapon. Wads of Tarydium byproduct are also used as projectiles by the GES Biorifle weapon.|
|Thaesium||Doctor Who serial The Mutants||Radioactive element used as fuel for spaceships of the Earth Empire during the 30th century that also serves an important role in the lifecycle of the native inhabitants of the planet Solos.|
|Terrazine||StarCraft II: Wings of Liberty||Similar to Vespene Gas (see Below), but with added Organic compounds that induce Psionic abilities. Used by Tosh to enhance the Psychic powers of his Spectre Agents|
|Theor+||Bertil Mårtensson's Jungfrulig planet||A superheavy element, number 183, stable, "eerily unscientific properties". Necessary for protecting the crew of faster-than-light spaceships from high-energy graviton radiation associated with powering up (or powering down) the engines.|
|Titanium-A||Halo||In the Halo series, Titanium-A Armor is composed of a high-grade Titanium-50 alloy, specially strengthened at the molecular level. Titanium-A has numerous uses throughout the UNSC due largely to titanium being lightweight and extremely strong, with a high tolerance to heat. It took new found importance after the beginning of the Human-Covenant War; To contend with the Covenant's plasma weaponry, Humans needed armor that would withstand the heat of the directed plasma. Despite its strength and resistance to heat, the Titanium-A plating is usually boiled away within seconds, and does not effectively dissipate the plasma. Its primary use is as armor for ships. UNSC Frigates have sixty centimeters of plating on their hull, and UNSC Destroyers have up to two meters of plating. Larger ships were known to have even more, such as ten meters to a supercarrier. The UNSC uses Titanium-A for construction of bases as well, to make them less susceptible to destruction. Places such as HIGHCOM Facility Bravo-6, CASTLE Base and Camp Hathcock used Titanium-A armor in their superstructures. Not to be confused of the real life Titanium.|
|Thiotimoline||Isaac Asimov||Chemical compound first described in a spoof scientific paper titled "The Endochronic Properties of Resublimated Thiotimoline" in 1948. The chemical actually begins to dissolve before it contacts water.|
|Thorium||World of Warcraft||Metal found on Azeroth that has a silvery green tint and is said to be as strong as steel but as heavy as lead. Used to construct heavier weapons and armour. Should not be confused with the real life Thorium. Also, the best type of fuel cell in the Master of Orion series.|
|Thyrium||Matthew Reilly's Temple||A rare element only observed in meteorite crater walls. It is stable, trans-uranic, non-radioactive and fissionable—producing more energy than either Uranium or Plutonium without generating waste products or measurable radiation.|
|Tibanna||Star Wars||A metallic gas mined from certain gas giants (notably Bespin), it has many high-tech applications including use as high quality hyperdrive coolant and to increase the effectiveness of blaster weapons.|
|Tiberium||Command & Conquer||Typically green, it is named after the Tiber River although the Brotherhood Of Nod claims it is named after the emperor Tiberius. It leaches metals out of the soil, concentrating them in crystals leaving the landscape depleted. It also converts other matter into more tiberium. Human exposure to this element can trigger mutations, but it more often proves fatal.|
|Timonium||Stardust series, Liaden universe,Rise of Nations: Rise of Legends||Surebleak used to be a mining center for timonium before they found big asteroids of it next door., it is used both to construct new technology and provide energy.|
|Tiny Atoms||Futurama||Presumably essentially the same as regular atoms, except much smaller. They are vital to the process of shrinking, but are very expensive, making the construction of remote-controlled "microdroids" a more economical option.|
|Tissue-like Protodermis||Bionicle||It makes up all living tissue in the Matoran Universe, including the few species of Organic Rahi.|
|Titanite||Star Blazers||An element found on Saturn's moon Titan. Golden and lustrous in appearance, it is used in spacecraft construction.|
|Titansteel||World of Warcraft: Wrath of the Lich King||An alloy forged from Titanium and the eternal essences of Fire, Earth and Shadow. Used in high-end item crafting.|
|Transparent aluminum||Star Trek IV: The Voyage Home||A material that will not be invented for many years to come. Commander Scott gives the formula to make it to a 20th Century engineer in exchange for enough contemporary available material to transport a pair of humpback whales back to the future to save the planet; in the film's novelization, he recognizes the engineer as its "inventor" and concludes that his presence is a predestination paradox. Not to be confused of the real life Aluminium, which is not transparent.|
|Transparisteel||Star Wars||This is a metal with transparency similar to glass and tensile strength similar to that of steel, quite common in the Star Wars universe.|
|Triidium||Deadlock||A Metal processed from Endurium. It is processed in factories, and has 10x the power of iron and 2x the power of Endurium.|
|Trilithium||Star Trek||An experimental compound capable of stopping all fusion within a star. Dr. Soran used this in an attempt to return to the spatial anomaly known as the Nexus (Star Trek Generations). Also, the second best type of fuel cell in the Master of Orion series.|
|Trilithium Resin||Star Trek||A hazardous by-product generated by the matter-antimatter reactions in warp cores, it is considered to have no practical use other than as an explosive. Mentioned in the episode Starship Mine.|
|Trinium||Stargate SG-1||Alien material used in the show that when refined is 100 times stronger and lighter than steel, which makes up the Stargate's Iris and is also used in the construction of Earth's Battle cruisers and Asgard ships|
|Tritanium||EVE Online, Star Trek||One of the main building blocks in space structures and spacecraft.
Within the universe of EVE (though not that of Star Trek), it is a very hard, yet bendable metal. Tritanium cannot be used in human habitats due to its instability at atmospheric temperatures. Very common throughout the universe. Within the Star Trek universe, it is an extremely hard and strong crystalline metallic material, with a hardness beyond the current standard 1–10 hardness scale. Due to the complexity of required fabrication techniques, it is generally used in the construction of ships and stations only for primary bulkhead and spaceframe components, and in locations where a high strength to volume ratio is required (ex. the hulls and frames of shuttlecraft and other auxiliary spacecraft).
|Tronium||Super Robot Wars||An alien mineral several times more radioactive than Uranium, it is used as a power source for the RTX-011 Hückebein Mk III, R-2 Powered, R-GUN Powered, and SRX, and as ammunition in the battleship Hagane's Tronium Buster Cannon. Only six chunks of this material are said to exist on Earth.|
|True Silver or Truesilver||World of Warcraft, Middle-earth||A valuable metal used to create magical armor, weapons, and other items. Found in some of the most dangerous areas of the Eastern Kingdoms and Kalimdor in Azeroth. For the metal found in Moria in Middle-earth, see Mithril.|
|Tungite||Mysterious Doctor Satan||In the Republic film serial Mysterious Doctor Satan, Tungite is the element necessary to power the remote control device for the villain Dr. Satan's race of killer robots.|
|Turbidium||Total Recall||In the movie Total Recall, it was a metal/alloy mined for use as a war material on Earth and ultimately used to extract oxygen from the ice in Mars's core.|
|Tylium||Battlestar Galactica||A fictional ore in both versions of the science fiction series Battlestar Galactica. It is very rare throughout the known universe, but essential for fueling both human and Cylon space ships, including for the purpose of faster-than-light jumps. Also referred to as "Tylinium."|
|Unnamed Metal||Battlefield Earth||A unnamed super dense metal in Battlefield Earth by L. Ron Hubbard that mixed with certain other elements causes an uncontrollable fission process that continues until there is nothing left of a planet except light gases. This metal is supposed to occur in meteorites before they burn up in an atmosphere.|
|Unobtainium||The Core, Avatar, Skyrates, many thought experiments||Generally any extremely rare, costly, or physically impossible material needed to fulfill a given design for a given application – sometimes referred to as "unaffordium". In The Core it is described as a special tungsten-titanium matrix. In Avatar (unobtanium—sic) the metal is highly valuable, and possesses unusual superconducting and magnetic properties (although the prop used is nothing other than galena). In Skyrates it is a green-colored element that has many properties, most prominently anti-gravity. Mark Donohue claimed that it was used in the chassis of Penske race cars.|
|Upsidaisium||The Rocky and Bullwinkle Show||Upsidaisium is a metal capable of defying gravity, and can be obtained by mining in upsidaisium-rich areas. Upsidaisium is prominently found in the hovering Mount Flatten, which Bullwinkle inherited from a deceased uncle.|
|Uridium||Uridium computer game, 1986||Name for the Uridium game's top level, a metallic element the developer thought existed. Also, the fourth best type of fuel cell in the Master of Orion series.|
|Uminm steel||2 book||Uminm steel, an almost indestructible metal that grows in perfect hexagonal prisms. When liquid it can corrode any material it comes in contact with.|
|Uru||Uru Thor series||Magical metal used in the creation of Thor's Mjolnir hammer, which gives it its magical powers and indestructibility.|
|Valyrian Steel||A Song of Ice and Fire||A metal mined in Valyria, stronger than normal steel, nearly unbreakable. The formula of its making was lost after the Doom.|
|Vespene Gas||StarCraft||A type of resource used to build high-tech units and buildings. Vespene gas is collected from Refineries (also called Assimilators or Extractors), which are constructed directly over Vespene Geysers.|
|Veridium||Metal Men||Extraterrestrial in origin, veridium is a green metal capable of channeling heat energy. Doctor Will Magnus permanently downloaded his mind into a veridium robot to become the new leader of the Metal Men.|
|Vibranium||Marvel Comics||An alien metal in two forms. Wakandan vibranium absorbs vibrational energy. The more energy it stores the tougher it becomes. If the molecular bonds are broken, all the energy is released, causing an explosion. It is found only in the African nation of Wakanda, ruled by the Black Panther. Antarctic vibranium emits a vibration that separates the bonds of other metals, liquifying them.|
|Vik-ro||Carson of Venus by Edgar Rice Burroughs||One of the two components of Lor (see below), which when combined with Yor-san results in total annihilation of the Lor, releasing tremendous energy.|
|Vionesium||Doctor Who||In the serial Terror of the Vervoids, a rare metal from the planet Mogar. It burns brightly in air, similarly to Magnesium. The Sixth Doctor used this effect to destroy the plant based Vervoids by accelerating them through their lifecycle.|
|Viridium||AdventureQuest world||Effective against minions of "The Devourer," a destructive god in the game AdventureQuest. They will be hurt more by this material than by a normal weapon, and hence has been infused into the Weapons of Salvation.|
|Vizorium||Dirty Pair||A rare metal used in the construction of warp engines in the Dirty Pair universe. First referenced in the Dirty Pair movie, Project EDEN.|
|Voltairium||Gene Roddenberry's Andromeda||Used in nova bombs. Possibly named for Voltaire|
|Warpstone or Wyrdstone||Warhammer Fantasy, also Warhammer 40,000 1st and 2nd editions||A greenish-black crystal of solidified magic with transmutatory powers. It can be used as fuel, or to turn base metal into gold. Its chaotic nature makes it difficult to use, causing mutations and unstable weaponry.|
|Wasabinite||Chop Socky Chooks||A precious purple crystal from the Moon. The villain Dr. Wasabi once tricked the patrons of his mall with a free trip to the Moon so he could enslave them to mine out the Wasabinite, but was eventually defeated by the heroic Chop Socky Chooks.|
|Wellstone||The Wellstone by Wil McCarthy||Formally known as Quantum Wellstone, it is a quantum dot, programmable substrate that can emulate the properties of other elements, including the copyrighted atom Bunkerlite, impervium, and various other super-reflectors and super-absorbers.|
|White||RuneScape||A form of hardened steel imbued with holy power. It is made into armour and weapons used by members of the "White Knight" order.|
|Wishalloy||Aerospace term e.g.||An alternative to unobtainium. Historically Scramjets have been described as being made from unobtainium reinforced wishalloy|
|Wonderflonium||Dr. Horrible's Sing-Along Blog||A material used by Dr. Horrible to create a ray that freezes its victim in time. Its container bears the written warning "do not bounce." On Dr. Horrible's whiteboard he writes H20+Wonderflonium=freeze. Other properties remain unknown.|
|Xenium||Half-Life||Xen crystals (Xenium) are crystalline structures of various sizes that exist in the Xen border world and appear to hold massive amounts of strong, unusual power. Their power was used by the scientists at Black Mesa in their research to create a reliable and safe means of teleportation.|
|Xenothium||Teen Titans series||Mysterious substance, presumably liquid or gas, used by Professor Chang to power Red X's costume and weapons.|
|Xentronium||Master of Orion 2||A metallic substance used as armor on alien ships.|
|Xirdalium||The Chase of the Golden Meteor||An element which is, in the French first edition of the novel, about a hundred thousand times more radioactive than radium. In the English first edition this has been reduced to a hundred times. Xirdalium was invented by Jules Verne's son Michel, who introduced it to the novel, together with the character Zephyrin Xirdal, a 'private genius' who synthesized the new element. In the story Xirdal then uses Xirdalium in a contraption emitting a strong tractor beam able to alter the trajectory of the meteor mentioned in the novel's title.|
|Xithricite||Vendetta Online||A bright green mineral used to produce incredibly strong alloys originally discovered by explorers from the Neutral Territories. References to it are found throughout the game's item descriptions and is used in everything from spaceship hulls to railgun ammunition. Ore containing Xithricite can be mined from asteroids by players.|
Fictional isotopes of real elements
|886Ar||Argon||Judge Dredd||An unstable element that is used to propel rounds fired from a Lawgiver.||The isotope does not exist; the heaviest known isotope is 53Ar.|
|138Cs||Caesium||Mission: Impossible: "The 'Snowball In Hell' Mission"||In this episode (the 21st in the series) the team has to prevent a sample of this isotope, the key to a low-cost nuclear arsenal, from getting into anti-American hands. Its autoignition temperature is 21°C (70°F) and thus has to be kept refrigerated in the tropical climate where it resides.||The isotope does exist, but it decays with a half-life of 33 minutes, and thus it would be infeasible for a nuclear weapon.|
|82Cm||Curium||Brødrene Dal og Spektralsteinene||The MacGuffin in this TV series, where Professor Slatters claims that with it he can find a cure/vaccine for the common cold. He and the Dal brothers go on an expedition to search for a meteorite with a sufficient amount of it. They do find one, but is there alloyed with umulium (impossibilium), making the 82Cm unobtainable.||Curium has an atomic number of 96, so the existence of this isotope would require a nucleon of negative mass (or 14 massless nucleons), which has not currently been found.|
|Quadium (4H)||Hydrogen||The Mouse that Roared||Hydrogen normally has no neutrons. Deuterium and tritium have one and two neutrons respectively and are used in hydrogen bombs. Quadium has three neutrons, and is in the story capable of blasting an entire continent off the face of the Earth.||This isotope exists but only for a very short time, making any use in a bomb impossible.|
|80Ir||Iridium||Riptide||According to the book, one second of direct exposure is equivalent to a lethal dose, with a reading of 3217.89 Rads/hr from 15 metres away. The blade of St. Michael's sword was forged from it.||80Ir does not exist; the lightest known isotope is 164Ir.|
|186Pu||Plutonium||The Gods Themselves||An isotope of plutonium which is too unstable to exist in our universe but which exists naturally in parallel universes whose strong nuclear forces are more intense. This is utilised as a source of energy where it is turned into 186W, releasing electrons in the process.||The description of this isotope is entirely correct; the lightest known isotope of plutonium is 228Pu.|
|Quantium||any element, but most commonly potassium||Babylon 5||This rare and expensive substance used in jumpgates is formed when ordinary matter is subjected to the stresses of a supernova, pushing some of its electron pair-bonds into hyperspace. The most commonly found form is derived from 40K, giving quantium-40. The name was coined by David Strauss in response to a request from the show's creator.||40K is a naturally occurring isotope of potassium which is used to date rocks. However, the method of obtaining quantium as described has not been demonstrated in real life.|
- Stan Lee and Peter Sanderson (1986). The Official Handbook of the Marvel Universe. Marvel Comics Group. ISBN 0-87135-208-7. "Adamantium is a virtually indestructible man-made steel alloy which does not occur in nature and whose ... Adamantium is not an element: its properties do not qualify it for any known space on the Periodic Table of Elements. ..."
- Wonder Woman (volume 1) #52, March–April 1952
- The Brave and the Bold (volume 1) #28, March 1960
- David Gerrold, Worlds of Wonder: How to Write Science Fiction & Fantasy (Writer's Digest Books, 2001; ISBN 978-1-58297-007-3)
- copyright 1980 by Paramount Pictures Corp.
- continuity screenplay
- shooting draft
- "Who Mourns for Morn?". Star Trek: Deep Space Nine. Season 6. Episode 134.
- Tolkien, J.R.R. (1954). The Fellowship of the Ring, The Lord of the Rings. Boston: Houghton Mifflin. ISBN 0-395-08254-4.
- "The Omega Directive". Star Trek: Voyager. Season 2. Episode 89. 15 April 1998., Star Date 51781.2
- Leadbeater, C.W. The Masters and the Path Adyar, Madras, India: 1925—Theosophical Publishing House
- Wes Platt (2002). Otherspace: The 2001 Yearbook. iUniverse. p. 247. ISBN 0595221572, 9780595221578 Check
|isbn=value (help). "..."It will generate a controlled fusion reaction within its interior until it reaches the proper temperature, using a carefully calculated amount of polydenum for a starter.""
- Lynn Yarris (June 29, 2005). "Breast Cancer Research at Berkeley Lab: Part 1: An Era of Hope for Breast Cancer Patients". Berkeley Lab News Center.
- "Leonardo Cuts Loose". TV Com. 1991. Archived from the original on 2013-02-07. Retrieved 7 February 20133.
- Stephen Tall. The Stardust Voyages. Berkley Medallion. ISBN 0425029727.
- Sharon Lee (writer) and Steve Miller (writer) (1982). I Dare. Meisha Merlin. ISBN 1-892065-12-6.
- Jules Verne; Michel Verne (1908). La Chasse au météore. Collection Hetzel. p. chpt. X. "«Ceci, Messieurs, disait-il, c’est du Xirdalium, corps cent mille fois plus radioactif que le radium. J’avouerai, entre nous, que, si j’utilise ce corps, c’est un peu pour la galerie. Ce n’est pas qu’il soit nuisible, mais la terre rayonne assez d’énergie pour qu’il soit superflu de lui en ajouter. C’est un grain de sel dans la mer. Toutefois, une légère mise en scène ne messied pas, à mon sens, dans une expérience de cette nature.»"
- Jules Verne; Michel Verne (1909). The Chase of the Golden Meteor. Grant Richards. p. 125. "„This, gentlemen.“ he said, „is Xirdalium, a body a hundred times more radio-active than radium. I am willing to own you that, if I utilize this body, it is more for show. Not that it is deleterious; but the earth radiates enough energy for me to do without adding more. It is a grain of salt thrown into the sea. Still, a little display is not unbecoming, methinks, in an experiment of this nature.“"
- Jules Verne; Frederick Paul Walter (2006). The meteor hunt. University of Nebraska Press. p. xi. "To Verne’s seventeen chapters Michel added four more. He created a dominant new character, Zephyrin Xirdal, who in effect takes over the action and the outcome."
- Vendetta Online – The Chronicles of Exile Section 08
- Preston, Douglas (1999). Riptide. New York: Warner Books. p. 446. ISBN 0-446-60717-7.
- Unofficial Babylon 5 Technical Manual