Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites
History
Origin
Pennsylvania, U.S.
Egypt
Discoverer
Unknown
Alois Wehrle
Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal
From the name of a professor, Alois Wehrle
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Plutonic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock