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| naturally occurring inorganic solid that a definite chemical composition and an orderly internal atomic structure |
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| solid in which the atoms are arranged in an orderly, repeating pattern |
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| hot, melted rock beneath Earth’s surface |
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| describes a mineral that contains silicon and oxygen and usually one or more elements |
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| – measure of how easily a mineral can be scratched |
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| describes a way a mineral reflects light from its surface; can be metallic or nonmetallic |
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| ratio of mineral’s weight compared with the weight of an equal volume of water |
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| color of a mineral when it is in powdered form |
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| physical property of some minerals that causes them to break along smooth, flat surfaces |
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| physical property of some minerals that causes them to break with uneven, rough, or jagged surfaces |
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| deposit in which a mineral exists in large enough amounts to be mined at a profit |
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| beautiful, rare, highly prized mineral that can be worn in jewelry |
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