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Definition
| a measure of how easily a mineral can be scratched |
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Definition
| a mixture of rock and cement that is used in building material |
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Definition
| a mineral or rock that contains enough of a metal to make mining the metal profitable |
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Definition
| the colored powder made by rubbing a mineral against a ceramic surface |
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Definition
| the process of melting ore to remove metal from it |
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Term
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Definition
| the tendency of some minerals to split along flat surfaces |
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Definition
| a solid element or compound found in nature |
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Term
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Definition
| the way a surface of a mineral looks when it reflects light |
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Term
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Definition
| How are ores treated to remove metal? |
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Term
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Definition
| A __________ is something that grows, but is not alive. |
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Term
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Definition
| Amethyst and tiger eye are gems made of this versatile mineral |
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Term
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Definition
| How are ores removed from the ground? |
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Term
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Definition
| Some important __________ are recycled to extend our use of mineral resources. |
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Term
| quartz, hematite, and magnetite |
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Definition
| Some important minerals are _______, _______, and _______ ores. |
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Term
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Definition
| Quartz is used in building materials such as __________. |
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Term
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Definition
| Quartz is heated to make _________. |
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Term
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Definition
| Quartz is separated into oxygen and silicon to make __________. |
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Term
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Definition
| Some important minerals are smelted to get ________, that is made into __________. |
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