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Science Section 3
The Formation, Mining, and Use of Minerals
| Question | Answer |
|---|---|
| Metamorphism | occurs when changes in pressure, temperature, or chemical make-up alter a rock |
| Pegmatites | teardrop-shaped bodies of magma under the earth's surface |
| Pluton | what you get when slowly-cooling magma solidifies |
| Ore | a mineral deposit large and pure enough to be mined for profit |
| Reclamation | the process of returning land to its original state after being mined |
| Open pits and quarries | surface mines |
| Metallic Minerals | good conductors of heat and electricity |
| Evaporating Salt Water | when a body of salt water dries up, minerals are left behind |
| Metamorphic Rock | when metamorphism takes place |
| Limestones | Surface water and groundwater carry dissolved materials into bodies of water where they crystallize on the bottom |
| Hot-Water Solutions | Groundwater works its way downward and is heated by magma, it then reacts with minerals to form a hot liguid solution. Minerals form out of the hot fluid. |