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14 Cards in this Set
- Front
- Back
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Quartz |
Hardness = 7 (scratches glass) non-metallic luster light and dark breaks by fracture oily luster |
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Quartz crystal |
hardness = 7 (scratches glass) non-metallic luster light and dark breaks by fracture |
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plagioclase feldspar |
hardness = 6 (scratches glass) non-metallic luster light colored 2 plane cleavage 90 degrees striations appear on cleavage lines |
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k-feldspar |
hardness = 6 (scratches glass) non-metallic luster light pinkish color 2 plane cleavage 90 degrees exsolution lamellae (muscle fibers) run across the cleavage plane |
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amphibole |
hardness = 6 (scratches glass) non-metallic luster dark black color 2 plane cleavage not 90 degrees green/grey streak splintery cleavages, black color |
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Calcite |
hardness = 3 non-metallic luster light colored 3 cleavage plane, rhombic shape reacts to HCl |
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Hematite |
hardness = 2 non-metallic luster dark colored breaks by fracture earthy luster red-brown streak |
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muscovite mica |
hardness = 2-2.5, scratched by fingernail non-metallic luster light colored one cleavage transparent in thin sheets |
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biotite mica |
hardness = 2-2.5, scratched by fingernail non-metallic luster dark colored black one cleavage |
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*Galena |
* hardness = 2.5 metallic luster dark color breaks along 3 cleavage planes make cube very dense/heavy |
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*halite |
* hardness = 2.5 non-metallic luster light colored breaks along 3 cleavage planes making cube salty taste |
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*pyrite |
* hardness = 6 (scratches glass) metallic luster dark colored breaks by fracture |
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*gypsum/selenite |
* hardness = 2 (scratched by fingernail) breaks along 1 good cleavage and 2 poorer cleavages to form a rhombus |
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*talc |
* hardness = 1 (softest mineral) non-metallic luster light color fractured and sometimes 1 cleavage plane pearly luster |
