Definition
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate
History
Origin
Tamil Nadu, India
New Zealand
Discoverer
T. H. Holland
Belsazar Hacquet
Etymology
From Job Charnock, an administtrator of East India Company
From lime and stone in late 14th Century
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock