Definition
Mugearite is a type of oligoclase bearing basalt, also comprising of olivine, apatite, and opaque oxides
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
History
Origin
Skye, Scotland
Pennsylvania, U.S.
Discoverer
Alfred Harker
Unknown
Etymology
From mugear + -ite
From Greek anthrakites, from anthrax, anthrak meaning coal
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
-
Other Categories
Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock