Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
Pennsylvania, U.S.
Isle of Mull, Scotland
Discoverer
Unknown
Ben More
Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal
From the name of discoverer, Ben More
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock