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The Igneous rock formed when magma cools are; 1. Extrusive (Volcanic) Igneous Rock; which are igneous rocks formed when magma cools outside the earths crust. The texture of of extrusive igneous rock is fine grained. 2. Intrusive (Plutonic) Igneous Rock; these are igneous rocks formed by gradual cooling of magma within the earths crust. The texture is coarse grained.
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It is most likely formed underground.
pegmatitic
Coarse
Igneous rocks are formed underground from a very hot substance called magma. As magma cools and hardens under extreme pressure, it forms igneous rocks.
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Igneous rock is formed.
Extrusive-formed on surfaceIntrusive-formed underground
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A pluton is a body of rock formed from the cooling of magma under the surface.