What is a Polymineralic Rock?

megalodon

Administrator
Staff member
Jun 3, 2020
73
92
18
The rocks may contain one or more minerals. If a rock is entirely composed of a single mineral, then it's called a Monomineralic rock. If it's composed of multiple minerals, then it's called Polymineralic rock. Majority of the rocks are Polymineralic and even some of the monomineralic rocks contains other minerals in minor amounts.

Examples of Polymineralic Rocks
S. No.Rock TypeRock NameMinerals
1​
Igneous RockGraniteQuartz, Plagioclase Feldspar and Mica
2​
Sedimentary RockArkoseQuartz and Feldspar
3​
Metamorphic RockPhylliteQuartz, Sericite Mica and Chlorite
 

Sokosan Stefan

Pliocene
Jun 19, 2020
13
9
3
Ideally, all igneous and metamorphic rocks are polymineralic. Some sedimentary and their igneous & metamorphic counterparts are considered monomineralic. Sometimes having more than X% of a single mineral will make it a monomineralic rock.
 
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