Is igneous rock acidic?
Category: Question and Answer
Updated: 2019/10/18
Views: 671 
Likes: 135
Views: 671 Likes: 135
Reference Answer
Extrusive (volcanic) rocks form when magma erupts onto the surface of the Earth as lava flows, and usually cools quickly producing small crystals. ... Acidic rocks such as granite, microgranite and rhyolite are rich in silica and contain the minerals quartz, feldspar and biotite among others.
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