Definition
Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
Tonale, Italy
Tamil Nadu, India
Discoverer
Warren Hamilton
T. H. Holland
Etymology
From Tonale Pass, northern Italy, + -ite1
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, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock