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1
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powedered color left behind when mineral is rubbed on unglazed porcelain tile
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2
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how a mineral reflects light
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3
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highly prized minerals that are rare and beautiful
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4
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solid with atoms arranged in an orderly repeating pattern
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5
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how easily a mineral can be scratched
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6
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naturally occuring, inorganic solid w/a definite chemical composition
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7
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ratio of a minerals weight compared to an eual volume of water
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10
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one of the 2 most abundant elements in earth's crust
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12
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mineral or rock that contains a substance that can be mined for a profit
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14
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hot molten rock beneath earth's surface
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