Granite is a silicate because it contains 70-77% silica (SiO2). Granite is a rock, and silica is mineral containing the chemical elements silicon (Si) and oxygen (O). Si and O chemically combine to form SiO2. Rocks are made up of minerals, which are made up of chemical elements. Because silicon and oxygen are the two most common chemical elements in the Earth's crust, silicate rocks are very common.
Asked in Plate Tectonics
What is the main mineral type in continental plates?
Continental plates are of silicate minerals, granite, and aluminum. Feldspars, quartz, and micas are a type of a silicate mineral. continetal plates are mostly made up of granatic rock. ...
Asked in Geology, Rocks and Minerals
How is granite formed?
Granite is formed from the slow cooling of high silicate magma intrusions that have risen through the crust and formed large bulbous chambers of molten material called plutons. Plutons can take millions of years to cool and crystallize into granitic rock. ...