Definition
Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
-
Tamil Nadu, India
Discoverer
Unknown
T. H. Holland
Etymology
From the mineral feldspathoid which is the main content of rock
From Job Charnock, an administtrator of East India Company
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Plutonic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock