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| how many elements occur naturally in the earth's crust |
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Definition
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| what is the most common mineral |
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Definition
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| what elements does it contain |
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| mineral breaks along plane |
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| powdered color of mineral |
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| what two characteristics make a mineral a gem |
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| a rock that contains a useful substance that can be mined for a profit |
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Definition
| bamxite, hematite, magnetite |
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| removing a useful substance for an ore |
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| forms when sediment are pressed out toghther |
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Definition
| pressure from upper layers pushed down on lower layers |
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Definition
| occurs when minerals such as quartz calcite and hematice are deposited between sediment |
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| the process of sediment moving by wind or water |
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| form when dissolved minerals come out of solution |
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| made of remains once-living things |
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Definition
| calcium carbonate is carried in solution in ocean water |
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| when water that is rich in dissolved salt evaporates, it deposits the mineral halite |
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| are made from the broken fragments of other rocks |
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| the process moved by wind water and ice |
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