What do granite and basalt have in common ?
Granite and basalt have different points, but they also have something in common.
Granite is a coarse-grained igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly solidifies underground. It is common in the Earth’s continental crust, where it is found in bodies called plutons. These range in size from dikes only a few inches across to batholiths exposed over hundreds of square kilometers.
Basalts are formed when magma cools on the earth’s surface during volcanic eruptions, and basalts are also the main materials that make up the earth’s oceanic crust and the moon. The basalt floor tiles are widely used for exterior – interior decoration and constraction.
On the causes of it, the two are common. Granite and basalt are formed by volcanic eruption, but the difference is that one is cooled underground and the other is cooled on the surface.
Roughly the same chemical composition. Abnormity and chemical composition of basalt, the majority is silicon dioxide, just different content of granite of silicon dioxide content in more than 65%, the basalt of silicon dioxide content in 45% ~ 52%.
Use also have the same place. Basalt and granite can be used for indoor and outdoor floor and mesa.
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