| Term 
 | Definition 
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        | Term 
 | Definition 
 
        | rock that can be mined for a profit |  | 
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        | Term 
 | Definition 
 
        | a beautiful and rare mineral |  | 
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        | Term 
 | Definition 
 
        | how well a mineral reflects light |  | 
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        | Term 
 | Definition 
 
        | color of a powdered mineral |  | 
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        | Term 
 | Definition 
 
        | scale of mineral hardness (1-10) |  | 
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        | Term 
 | Definition 
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        | Term 
 | Definition 
 
        | not made by a life process |  | 
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        | Term 
 | Definition 
 
        | atoms have a specific pattern |  | 
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        | Term 
 | Definition 
 
        | mineral containing silicon and oxygen |  | 
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        | Term 
 | Definition 
 
        | number of elements in the Earth's crust |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | when a mineral breaks along a smooth, flat surface |  | 
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        | Term 
 | Definition 
 
        | when a mineral breaks along an uneven surface |  | 
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        | Term 
 | Definition 
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        | Term 
 | Definition 
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        | Term 
 | Definition 
 
        | process used to separate a mineral from an ore |  | 
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        | Term 
 | Definition 
 
        | most common mineral in the Earth's crust |  | 
        |  |