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ES Vocab Ch4
Term | Definition |
---|---|
Mineral | A naturally occurring, inorganic solid, with a specific chemical composition and a definite crystalline structure. |
Crystal | A solid in which the atoms are arranged in repeating patterns. |
Luster | The way that a mineral reflects light from its surface. |
Hardness | A measure of how easily a mineral can be scratched. |
Cleavage | A mineral that splits relatively easily and evenly along one or more plat planes. |
Fracture | Minerals that break with rough or jagged edges. |
Streak | The color of a mineral when it is broken up and powdered. |
Specific gravity | Which is the ratio of the mass of a substance to the mass of an equal volume of water at 4c. |