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ch.4 vocab
Term | Definition |
---|---|
Mineral | A naturally occurring, inorganic solid. |
Crystal | A solid in which the atoms are arranged in repeating patterns. |
Luster | A gentle sheen or soft glow, especially that of a partly reflective 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 flat planes. |
Fracture | The cracking or breaking of a hard object or material. |
Streak | a long, thin line or mark of a different substance or color from its surroundings |
Specific Gravity | the ratio of the density of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas. |