Definition
Shonkinite is a rare, dark-coloured and intrusive igneous rock which contains augite and orthoclase feldspar as its primary constituents
An iron rich extrusive rock found as a member of the alkali basalt magma series
Origin
USA
Isle of Mull, Scotland
Discoverer
Unknown
Ben More
Etymology
From the name of Shonkin Sag ranges in the Highwood Mountains of north-central Montana, US
From the name of discoverer, Ben More
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock