Definition
Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals
Mugearite is a type of oligoclase bearing basalt, also comprising of olivine, apatite, and opaque oxides
History
Origin
-
Skye, Scotland
Discoverer
R. J. Hauy
Alfred Harker
Etymology
From Greek pegma, pegmat which means- thing joined together + -ite
From mugear + -ite
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Opaque Rock