Definition
Mugearite is a type of oligoclase bearing basalt, also comprising of olivine, apatite, and opaque oxides
Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar
History
Origin
Skye, Scotland
France
Discoverer
Alfred Harker
Alexandre Brongniart
Etymology
From mugear + -ite
From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
-
Other Categories
Opaque Rock
Coarse Grained Rock, Opaque Rock