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mineria granate s m ining para granate oro

Granite / ˈ ɡ r æ n ɪ t / is a coarse grained igneousposed mostly of quartz, alkali feldspar, and plagioclase.It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies underground.Itmon in the Earth's continental crust, where it is found in various kinds of igneous intrusions.These range in size from dikes only a few inches