1 Definition
1.1 Definition
Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals
1.2 History
1.2.1 Origin
Unknown
1.2.2 Discoverer
R. J. Hauy
1.3 Etymology
From Greek pegma, pegmat which means- thing joined together + -ite
1.4 Class
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
Plutonic
1.6 Other Categories
Coarse Grained Rock, Opaque Rock