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