Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Pantellerite is a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite
History
Origin
Pike County, U.S
Strait of sicily
Discoverer
Unknown
Unknown
Etymology
From French, from peridot + -ite
From Pantelleria, a volcanic island in the Strait of Sicily
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock