Akhtenskite
Akhtenskite (Manganese Smoker[1]) is a mineral with the chemical formula of MnO2 that was named after the Akhtensk deposit. The deposit can be found in Russia, where it was first discovered and noted in 1979.[2][3][4] It can be found in the Akhtensk brown ironstone deposit, in the southern Ural Mountains, on Mt. Zarod, on the Sikhote-Alin Mountains, and in the Primorskiy Krai. All of these locations can be found in Russia.[5]
Akhtenskite is not radioactive.[3] Its crystals are usually hexagonal in shape, with flakiness and plating, usually because of the fact that it replaced a mineral.[5] Akhtenskite is a polymorph of much more widespread pyrolusite. It occurs in mixtures with "psilomelane" (recently renamed to romanechite) and with other manganese oxides in an iron oxide deposit, most likely bacterially altered from a previous mineral in the Akhtensk deposit. It also occurs in crustings of ferromanganese minerals on oceanic rocks.[3] Its chemical makeup is 63% oxygen and 37% manganese.[4] However, it very rarely occurs.[6]
Some minerals that are commonly associated with Akhtenskite are: todorokite, pyrolusite, nsutite, goethite, and cryptomelane.[7] It has a specific gravity of 4.78.[8]
[edit] References
- ^ "Gunnar Färber's list of minerals and alternate names". http://www.seltene-mineralien.de/Eweb/Lists/2-2007.htm. Retrieved 2008-05-04.
- ^ "Mineral Reference Lookup for Akhtenskite". Mystic Gem Creations. http://www.mysticgemcreations.com/minerals/mineral_reference_akhtenskit.php. Retrieved 2008-05-04.
- ^ a b c "Akhtenskite data sheet". Webmineral.com. http://www.webmineral.com/data/Akhtenskite.shtml. Retrieved 2008-05-04.
- ^ a b "Akhtenskite mineral data". Mineralcollecting.com. http://www.mineralcollecting.org/data/allcategory.cgi?a=Akhtenskite&m=ww&ex=&a=a&c=&d=&l=&h=&v=&s=&r=&el=&pc=&elt=&pct=&elr=&pcr=&elf=&pcf=&str=&dna=&fml=. Retrieved 2008-05-04.[dead link]
- ^ a b "Fact sheet about Akhtenskite". Mineral Data Publishing. http://www.handbookofmineralogy.org/pdfs/akhtenskite.pdf. Retrieved 2008-05-04.
- ^ "MinMax's data sheet for Akhtenskite". Mineral Information System. http://www.minmax.net/min.php?lang=en&name=Akhtenskite&SID=0c11reh9uli2ngpoag4s7u6ufs0q1nn3. Retrieved 2008-05-04.[dead link]
- ^ Jolyon & Ida Ralph. "Akhtenskite mineral information and data". Mindat.org. http://www.mindat.org/min-71.html. Retrieved 2008-05-04.
- ^ "Akhtenskite general information". Mineralatlas.com. http://www.mineralatlas.com/mineral%20general%20descriptions/A/akhtenskitepcd.htm. Retrieved 2008-05-04.
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