EARTH SCIENCE inside earth CH 4
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16 terms
Terms | Definitions |
|---|---|
 mineral | composed of matter other than plant or animal |
| crystal | formed when particles in a mineral line up in a repeating pattern |
| inorganic | not formed from living things or the remains of living things |
| streak | the color of a mineral in powdered form |
| luster | the way a mineral reflects light |
| Mohs hardness Scale | a scale ranking ten minerals from softest to hardest; used in testing the hardness of minerals |
| cleavage | a mineral's ability to split easily along flat surfaces |
| fracture | (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other |
| gemstone | a precious or semiprecious stone that can be cut and polished for use as a gem. |
| ore | a metal-bearing mineral valuable enough to be mined |
| smelting | The process by which ore is melted to separate the useful metal from other elements |
| alloy | a solid mixture of two or more elements |
| geode | a hollow rock inside which mineral crystals have grown |
| crystallization | the formation of crystals |
| solution | a homogeneous mixture of two or more substances |
| vein | a layer of ore between layers of rock |
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