Definition
Teschenite is coarse- to fine-grained, dark-coloured intrusive igneous rock that usually occurs in sills, dikes and irregular masses and is always altered to some extent
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
Scotland
Tamil Nadu, India
Discoverer
Unknown
T. H. Holland
Etymology
From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland
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