Minerals
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| Mineral | a naturally occurring, inorganic solid with a definite structure and composition.
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| inorganic | aren't alive, never were alive, and are not made by life processes.
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| solid | has a definite volume and shape.
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| crystal | a solid in which the atoms are arranged in repeating patterns.
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| Formation of Minerals | 1) if a solution becomes saturated or filled with another substance. 2) from minerals dissolved in liquids. 3) from the cooling of hot melted rock material, called magma.
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| Friedrich Mohs | a German scientist who developed the Mohs Scale of hardness. (lists hardness of 10 minerals with 1 being the softest and 10 the hardest).
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| Luster | physical property of a mineral that describes how light is reflected from its surface. Is defined as either metallic or nonmetallic.
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| Metallic | always shine like metal.
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| Nonmetallic | don't shine like metal.
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| Color | usually isn't enough alone to identify a mineral.
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| Streak | color of a mineral when it is powedered; usually observed by rubbing the mineral on a ceramic streak plate.
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| Silicates | minerals that contain silicon and oxygen and usually one or more other elements.
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| Rock Salt | real name is halite and has a cubic crystal shape.
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| Hardness | a measure of how easily a mineral can be scratched.
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| Talc | is the softest mineral and can be scratched with your fingernail.
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| Diamond | hardest mineral and it can only be scratched by another diamond.
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| Cleavage | physical property of a mineral that causes it to break along smooth, flat surfaces.
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| Mica | has a perfect cleavage.
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| Fracture | physical property of a mineral that causes it to break with rough or jagged edges.
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| Quartz | has fracture. has atoms arranged in repeating patterns, but you can't see the crystal structure on the outside of the mineral.
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| Magnetite | attracted to magnets.
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| Calcite | fizzes when hydrochloric acid is put on it. causes you to see a double image.
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| Gem | a valuable mineral highly prized because it is rare and beautiful.
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| Ore | a mineral containing a useful substance such as a metal that can be mined at a profit.
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| Titanium | durable, lightweight metal derived from minerals such as ilmenite or rutile.
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Created by:
Rach
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