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
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
History
Origin
Scotland
New Zealand
Discoverer
Unknown
Ferdinand von Hochstetter
Etymology
From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland
From the name of Dun Mountain, New Zealand, + -ite1
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock