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Minerals521
15 minerals w/ description
Question | Answer |
---|---|
Conchoidal fracture, scratches glass, 6 sided crystal | quartz |
green, glassy, granular crystals, | olivine |
2 cleavages at 90 grene/black | pyroxene |
pink, blocky, 2 cleavages | orthoclase |
white striations on clevage faces | plagioclase |
small needle like crystals | hornblende |
black, micaeous (peels off in sheets) | muscovite |
fools gold, cubic crystals | pyrite |
metallic, red brown streak | hematite |
magnetic, black | magnetite |
reacts with HCl, 3 cleavages not at 90 | calcite |
metallic, silver, heavy, cubic cleavage | galena |
scratches with fingernail | gypsum |
tastes salty, cubic cleavage | halite |