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10 Cards in this Set
- Front
- Back
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unit cell |
smallest unit of the geometric pattern in a crystal |
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rock |
aggregate of one or more minerals |
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Hardness of a finger nail is |
2.5 |
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Hardness of a penny is |
3 |
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Hardness of a knife blade is |
5.5 |
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Hardest mineral is |
diamond |
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Softest mineral is |
talc |
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Quartz is |
7 |
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Mica |
a group of rock-forming minerals formed from sheets of silicon-oxygen tetrahedra |
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Calcite |
limestone and marble |
