Definition
Harzburgite is a plutonic rock of the peridotite group consisting largely of orthopyroxene and olivine
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Germany
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From the name of a town in Harzburg, Germany
From Greek di + base
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock