Definition
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica
History
Origin
Tamil Nadu, India
Western Australia, Minnesota
Discoverer
T. H. Holland
Newton Horace Winchell
Etymology
From Job Charnock, an administtrator of East India Company
From the name of Taconic Mountains in New England
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
Coarse Grained Rock, Opaque Rock