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Intrusive Igneous rocks cool underground during their formation whilst Extrusive Igneous rocks from above the surface.

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Intrusive Igneous rocks cool underground during their formation whilst Extrusive Igneous rocks from above the surface.

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Igneous Extrusive Rocks - Kansas Geology

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Three types of Sedimentary Rocks: Clastic,Organic, and Chemical

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Three types of Sedimentary Rocks: Clastic,Organic, and Chemical

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Clastic Rocks come from the breakdown of pre-existing rocks whilst chemical and organic rocks from precipitation of organic materials.

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Clastic Rocks come from the breakdown of pre-existing rocks whilst chemical and organic rocks from precipitation of organic materials.

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Clastic rocks are made of mineral fragments while Chemical Rocks are mae of minerals precipiated in solution. Organic rocks are made from original materials such as the remains of the plant material for coal.

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Clastic rocks are made of mineral fragments while Chemical Rocks are mae of minerals precipiated in solution. Organic rocks are made from original materials such as the remains of the plant material for coal.

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Foliated  Metamorphic Rocks: Flat or needlike crystals to form with  their long axes perpendicular to the high pressure.

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Foliated  Metamorphic Rocks: Flat or needlike crystals to form with  their long axes perpendicular to the high pressure.

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Nonfoliated Metamorphic Rocks: Lack mineral rains with long axes in one direction.

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Nonfoliated Metamorphic Rocks: Lack mineral rains with long axes in one direction.