Occurrence of quartz in high amounts makes a rock
A. Alkaline
B. Acidic
C. Hard
D. None of these
Answer: Option B
Solution(By Examveda Team)
The occurrence of quartz in high amounts makes a rock acidic. Rocks like granite, microgranite, and rhyolite rich in silica are acidic rocks and contain the minerals quartz and feldspar.Acidic rocks refer to the chemical composition of igneous rocks that has 63% weight % SiO2 content. It usually contains more than 20% of free quartz.
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