Definition
Luxullianite is a rare type of granite, known for presence of clusters of radially arranged acicular tourmaline crystals which are enclosed by phenocrysts of orthoclase and quartz in a matrix of quartz, tourmaline, alkali feldspar, brown mica.
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
England
Tamil Nadu, India
Discoverer
Unknown
T. H. Holland
Etymology
From the village of Luxulyan in Cornwall, England, where this variety of granite is found
From Job Charnock, an administtrator of East India Company
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock