Definition
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
USA
Tamil Nadu, India
Discoverer
Unknown
T. H. Holland
Etymology
From silica, the main mineral content of Jasperoid
From Job Charnock, an administtrator of East India Company
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Plutonic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock