Earth Science Rocks

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Issue:

Science

 

Written by:

Neva B

 

Date added:

June 12, 2015

 

Level:

University

 

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No of pages / words:

2 / 292

 

Was viewed:

3355 times

 

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Essay content:

There are more compound than native. You can identify minerals by color, streak, luster, hardness, cleavage, and fracture. Minerals form by magma erupting and forming lava then cooling. They can also form by evaporation of water containing dissolved ions. Silicates are the most common group of minerals found in the earth's crust...
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The structure of minerals are orderly. They form crystalline. A crystalline has flat faces and smooth surfaces. Igneous rocks are formed from magma. If they are intrusive (plutonic), they have large crystals and cooled slowly. If they are extrusive, they cool quickly, have fined grain. The scheme for igneous rock identification is based on texture, color, composition, and density...
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