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
An iron rich extrusive rock found as a member of the alkali basalt magma series
History
Origin
Scotland
Isle of Mull, Scotland
Discoverer
Unknown
Ben More
Etymology
From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland
From the name of discoverer, Ben More
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock