Definition
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica
History
Origin
New Zealand
Western Australia, Minnesota
Discoverer
Ferdinand von Hochstetter
Newton Horace Winchell
Etymology
From the name of Dun Mountain, New Zealand, + -ite1
From the name of Taconic Mountains in New England
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock