Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Quartzite is a non-foliated metamorphic rock that forms by the metamorphism of pure quartz Sandstone
History
Origin
Pike County, U.S
-
Discoverer
Unknown
Unknown
Etymology
From French, from peridot + -ite
From quartz + -ite
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
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Other Categories
Coarse Grained Rock, Opaque Rock
Medium Grained Rock, Opaque Rock