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Minerals25
Course: GEO 1013, Fall 2007School: Texas San Antonio
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Ramirez Nar The 3rd Planet 10/25/2007 Minerals Name Talc Gypsum Calcite Fluorite Apatite *Feldspar Quartz Topaz Corundum Diamond Galena Sphalerite Pyrite Graphite Hematite Limonite *Plagioclase Muscovite Mica Biotite Mica Actinolite Andalusite Halite Magnetite Molybdenite Epidote Kyanite Uraninite Realgar Arsenopyrite Sulfur Color white to gray or green White to grey, pinkish-red white or none Colorless, white,...
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Ramirez Nar The 3rd Planet 10/25/2007 Minerals Name Talc Gypsum Calcite Fluorite Apatite *Feldspar Quartz Topaz Corundum Diamond Galena Sphalerite Pyrite Graphite Hematite Limonite *Plagioclase Muscovite Mica Biotite Mica Actinolite Andalusite Halite Magnetite Molybdenite Epidote Kyanite Uraninite Realgar Arsenopyrite Sulfur Color white to gray or green White to grey, pinkish-red white or none Colorless, white, purple Transparent to translucent white Clear (if no impurities); also see Varieties Clear and Blue Brown to grey Typically yellow, brown or gray to colorless Lead gray, silvery yellow, brown, or gray to gray-black Pale, dull gold Steel black, to gray Metallic grey to earthy red Streak White White none White none none White none White White Gray Brown Black Black Red
yellow, orange, reddish brown, brownish black Yellow White, Gray, Bluish white, Reddish white, Greenish white White White, Gray, Silver white, Brownish white White Dark brown, Greenish brown, Blackish brown, Yellow Gray green.white or gray White Dark green, Gray, Brown, Red, Green White clear or white but can be found blue, purple, pink White black Black silver metallic with a bluish cast Gray Yellowish green, Brownish green, Black, Yellow, Gray Gray Blue, White, Gray, Green, Black White black to steel black with tints of brown Brown Orange to Red Orange Tin white, Light steel gray Black Yellow Yellow
Minerals Luster clear or dusty Vitreous to silky or pearly vitreous in crystallized varieties glassy Vitreous to subresinous pink microcline in perthite Vitreous/glossy Vitreous/glossy Adamantine to vitreous Adamantine Metallic Resinous Metallic, glistening metallic, earthy Metallic to splendent earthy to dull Vitreous (Glassy) Vitreous (Glassy) Vitreous - Pearly Vitreous Vitreous (Glassy) vitreous metallic to dull metallic Vitreous (Glassy) Vitreous - Pearly submetallic to pitchy and dul Resinous, adamantine to sub-metallic Metallic Vitreous, resinous or earthy Hardness Specific Gravity 1 2.52.8 2 3 4 5 6 7 8 9 10 2.5 4 1 6 5.5 4.5 6 2 3 6 7 2 6 2 7 5.5 5.5 2 5 2 2.31 - 2.33 2.71 3.18 1.634 - 1.638 2.62 2.65 constant 3.43.6 3.95-4.1 3.52 (+/- .01) 7.4 - 7.6 3.9-4.1 4.955.10 Settles Last 4.9 - 5.3 2.9 to 4.3 2.61 - 2.76 2.77 - 2.88 2.8-3.4 2.9 - 3.3 3.13 - 3.17 2.1 5.1 4.7 to 4.8 3.3 - 3.6 3.56 - 3.67, 7.5 - 10 3.5 - 3.6 6.07 2.0 - 2.1
Minerals Cleavage basal 2 good (66 and 114) 3 directions parallel to the rhombohedron form [111] Perfect, [111] Perfect, [111] Perfect [0001] Indistinct, [1010] Indistinct 001] Perfect, [010] Good None perfect Crystal Monoclinic Monoclinic 2/m trigonal-rhombohedral Isometric 4/m bar 3 2/m Hexagonal Dipyramidal Crystal twinning rhombohedral class 32 orthorhombic
None Trigonal Hexagonal Scalenohedral bar32/m 111 (perfect in four directions) Isometric-Hexoctahedral (Cubic) Cubic Isometric hexoctahedral perfect dodecahedral cubic crystal system Poor Isometric; bar 3 2/m Perfect in one direction Hexagonal (6/m 2/m 2/m) None Hexagonal (rhombohedral) None [001] Good, [010] Good [001] Perfect [001] Perfect Perfect in two directions [110] Distinct, [100] Indistinct, [010] Poor Perfect in three directions None perfect in one direction [001] Perfect [100] Perfect, [010] Imperfect poor in four directions good in one direction [110] Distinct very poor in two directions massive, layered, botryoidal and stalactitic Triclinic - PinacoidalH-M Symbol Monoclinic - Prismatic Monoclinic - Prismatic monoclinic; 2/m Orthorhombic - Dipyramidal isometric; 4/m bar 3 2/m isometric hexagonal; 6/m2/m2/m Monoclinic - Prismatic Triclinic - Pinacoidal isometric; 4/m bar 3 2/m Monoclinic; 2/m Monoclinic - Prismatic orthorhombic; 2/m 2/m 2/m
Minerals Chemical Formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2 CaSO42H2O CaCO3 CaF2 Ca5(PO4)3(F,Cl,OH) NaAlSi3O8 SiO2 Al2SiO4(F,OH)2 Al2O3 C PbS (Zn,Fe)S FeS2 C Fe2O3 FeO(OH)nH2O Na,Ca)(Si,Al)4O8 KAl3Si3O10(OH)1.8F0.2 K(Mg,Fe++)3[AlSi3O10(OH,F)2 Ca2(Mg, Fe)5Si8O22(OH)2 Al2SiO5 = Al[6]Al[5]OSiO4 NaCl Fe3O4 MoS2 Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) Al[6]Al[6]OSiO4 UO2 AsS FeAsS S
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