Igneous (IgneousRock) directly solidified from magma (Magma).

Hot magma crystallization from the liquid cooling of the igneous rock samples (Figure 1) into a variety of minerals, mineral closely integrated into the igneous rock. The chemical composition of different magma, and finally the mineral composition of different igneous rocks, a wide range of hundreds of classified.Such as according to their silicon content of high and low for the most concise classification of igneous acidic (Acidic), neutral (Intermediate), basic (Basic), and ultrabasic (Ultrabasic) four major categories

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