• Geology

What is a grain of rock?

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βˆ™ 2010-02-26 13:37:21

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fine grained or coarse grained

2010-02-26 13:37:21
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Q: What is a grain of rock?
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Is Basalt a fine grain rock or a coarse grain rock?

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A grain can be a tiny piece of rock, yes. A grain can also be a grain of salt, meaning one 'pellet' of salt.

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An allochem is a grain of rock in a carbonate rock.

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Grain refers to particle or crystal size in rock.

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Grain shape.

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What is the particle that gives a rock texture?


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It depends on if it is intrusive or extrusive. If it is an intrusive rock, it is formed when magma hardens under the earth and has a larger grain size. If it is an extrusive rock, it is formed when lava hardens on the earth's surface and has a smaller grain size.

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