1 Definition
1.1 Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
1.2 History
1.2.1 Origin
Pennsylvania, U.S.
New Zealand
1.2.2 Discoverer
Unknown
Ferdinand von Hochstetter
1.3 Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal
From the name of Dun Mountain, New Zealand, + -ite1
1.4 Class
Metamorphic Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock