Definition
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
Monzonite is a granular igneous rock with composition between syenite and diorite and containing approximately equal amounts of orthoclase and plagioclase
History
Origin
Germany
Trento Province, Italy
Discoverer
Christian Leopold von Buch
Unknown
Etymology
From Greek di + base
From Mount Monzoni in the Tyrol, Italy, + -ite1
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock