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- Lustre (mineralogy) (section Submetallic lustre)but has a coarser texture. Submetallic minerals have similar lustre to metal, but are duller and less reflective. A submetallic lustre often occurs in near-opaque...12 KB (1,158 words) - 23:18, 14 January 2024
hard coal and black coal, is a hard, compact variety of coal that has a submetallic lustre. It has the highest carbon content, the fewest impurities, and...31 KB (3,567 words) - 09:36, 23 June 2024
orthorhombic crystal structure, a hardness of 5, specific gravity of 4, a submetallic luster and a yellow-brown streak. It is red to reddish brown and forms...4 KB (201 words) - 13:49, 8 April 2024
solution series. It forms reddish brown to black monoclinic prismatic submetallic crystals. The crystals are typically flattened and occur with fine striations...10 KB (940 words) - 22:20, 3 January 2024
similar to pyrope and almandite garnet are also known. Brookite displays a submetallic luster. It is opaque to translucent, transparent in thin fragments and...9 KB (734 words) - 21:15, 28 October 2023
color is dark steel-grey to iron-black, and the luster brilliant and submetallic. The streak is dark reddish brown. The hardness is 4, and the specific...6 KB (504 words) - 09:07, 30 January 2023
Greek words astron meaning "star" and phyllon meaning "leaf". Its great submetallic gleam and darkness contrast sharply with the light (felsic) matrix the...4 KB (324 words) - 03:01, 11 January 2024
Indistinct Fracture Conchoidal to uneven Mohs scale hardness 5–6 Luster Submetallic, greasy, dull Streak Brownish black, gray, olive-green Diaphaneity Opaque;...9 KB (784 words) - 11:36, 6 April 2024
MnII)Nb2O6, is a black mineral group that is an ore of niobium. It has a submetallic luster, a high density, and is a niobate of iron and manganese. Niobite...26 KB (2,818 words) - 11:01, 26 June 2024
Perfect on {0001} Tenacity Flexible Mohs scale hardness 1.5–2 Luster Submetallic, inclining to resinous to dull Streak Lead gray Diaphaneity Opaque Specific...20 KB (2,191 words) - 00:12, 10 June 2024
one direction Fracture Subconchoidal Mohs scale hardness 6–6.5 Luster Submetallic to almost resinous Streak Brownish-red to black Specific gravity 8.0+...6 KB (439 words) - 21:38, 10 January 2024
Conchoidal to subconchoidal Mohs scale hardness 5.5 to 6.5 Luster Brilliant submetallic, waxy to resinous on fractures Streak Yellowish, grayish, or reddish...4 KB (247 words) - 19:45, 18 January 2024
Perfect {010} Fracture Uneven to rough Mohs scale hardness 4–4.5 Luster Submetallic to resinous Streak Reddish brown Diaphaneity Opaque Specific gravity...11 KB (1,067 words) - 07:32, 6 April 2024
botryoidal and stalactitic masses with a smooth shining surface and submetallic lustre. The mineral is readily distinguished from other hydrous manganese...5 KB (413 words) - 21:08, 22 January 2024
group P21/c). Weathered enstatite with a small amount of iron takes on a submetallic luster and a bronze-like color. This material is termed bronzite, although...9 KB (858 words) - 17:27, 10 April 2024
the results must have been erroneous. It looked dull and soft, with a submetallic luster similar in appearance to lead, yet sheared the teeth off his file...14 KB (1,890 words) - 03:51, 8 May 2024- 3-15 μm intergrowth lamallae with graphite Mohs scale hardness 1 - 2 Lustre Submetallic Diaphaneity Opaque Specific gravity 3.43 (calculated) References...5 KB (457 words) - 02:43, 16 February 2023
moderately hard (Mohs hardness 5.6 to 6), opaque black mineral with a submetallic luster. It is almost always massive, with thick tabular crystals being...31 KB (3,184 words) - 00:02, 5 June 2024
Uneven – irregular Mohs scale hardness 3.5–4 Luster Resinous, brilliant submetallic on crystal faces Streak light brown Diaphaneity Translucent Specific...5 KB (358 words) - 20:10, 8 April 2024
Tenacity Brittle Mohs scale hardness 5.5–6 Luster Vitreous, resinous to submetallic Streak Grey Diaphaneity Translucent to opaque Specific gravity 3.5–4...6 KB (432 words) - 00:55, 16 February 2023
- sub- + metallic submetallic (not comparable) (mineralogy) Having a lustre like that of metal, but duller and less reflective Translations ballet music
- colour is dark steel-grey to iron-black, and the lustre brilliant and submetallic: the streak is dark reddish-brown. The hardness is 4, and the specific