Igneous Rock is classified as a form of Igneous Rock, which caused the generator to cool inside the Earth's crust (Intrusive) that features in this format is usually cool and the melting of the Earth's crust under the magma. When the movement of the plate tectonics to Uplift causes the magma under the Earth's crust is cool. Low density, which has pushed up more peaks. Crystal clear is the nature of. Coarse-grained decay occurs when minerals such as Feldspar, which will affect the high decay. The stones in this group until the build-up that nevertheless will be a Granite type stone. The cool stone section akni crust (Extrusive Rock) caused by the magma pressure is driving plate tectonics off to cool quickly. Have a look at the relatively small crystals or crystalline birth may not be at all. The stones in this group is a Volcanic Rock, Pyroclastic rock category.
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