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Related Flashcards
Cards In This Set
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Pyrite has a metallic luster, a streak of greenish black to black, a hardness of 6-6.5PYRITE
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One cleavage plane, colorless usually, vitreous luster, hardness of 2-2.5, perfect cleavage, thin sheetsMICA MUSCOVITE
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Black to brownish black, vitreous luster, hardness of 2.5-3, may have faint brown/grey streak, perfect cleavage, transparent, thin sheetsMICA BIOTITE
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3 cleavages, clear usually, vitreous luster, hardness of 3, 3 perfect cleavages, see double image through, reacts with acidCALCITE
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0-1 cleavage plane, light apple green/grey/white color, pearly luster, hardness of 1, may have light grey streak, greasy feel.TALC
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Metallic luster, red/brown streak, hardness of 6, may be micaceous(tiny flakes)HEMATITE
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Clear color usually, 3 cleavages, hardness of 2.5, cleavages are perfect(meet at 90 degree angles), calcite scratches this mineralGYPSUM
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May have one cleavage, metallic luster, black/grey streak, hardness of 1.5GRAPHITE
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3 excellent cleavages, metallic luster, hardness of 2.5, black/grey streak, cubic commonGALENA
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Four cleavages, purple/green/blue/yellow/clear, hardness of 4, vitreous lusterFLOURITE
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Metallic luster, golden yellow, hardness of 3.5-4, copper red streakCHALCOPYRITE
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Clear, milky(many colors), hardness of 7, no cleavage, conchoidal fracture, vitreous lusterQUARTZ
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Salmon-pink/white/gray/green, vitreous luster, hardness of 6, 2 cleavages that meet at nearly right angles, no striationsPOTASSIUM FELDSPAR
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White/dark grey, vitreous luster, hardness of 6, 2 cleavages meet at nearly right angles, some have perfect striations which you can see in reflected lightPLAGIOCLASE FELDSPAR
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Reddish brown, vitreous luster, hardness of 7, 12 sided crystal, broken surfaces may resemble cleavage but it is just the crystal formGARNET
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