Rocks and Minerals Vocabulary (SML)
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15 Terms
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Cleavage
The tendency of a mineral to break along straight lines
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Fracture
A break in a mineral that is not in a regular way
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Luster
The way a mineral reflects light.
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Density
A measure of how much mass in an amount of space
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Color
Most obvious property of a mineral, but not always accurate
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Streak
The color a mineral leaves in powdered form
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Hardness
How easily a rock can be scratched
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Igneous rock
Rock formed when meted rock cools and hardens
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Sedimentary rock
Rock formed when sediment is cemented together
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Metamorphic rock
Rock formed by heat & pressure
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Magma
Melted rock underneath the surface of the Earth
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Lava
Melted rock on the surface of the Earth
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Fossil
Remains of plants and animals
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Rock
A nonliving solid made of more than one mineral
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Mineral
a nonliving solid that naturally occurs in a crystalline form.