Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix
From Alkalic Igneous complex near Loch Borralan in northwest Scotland
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
From French, from peridot + -ite
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock