Definition
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
History
Origin
Germany
Western Australia, Minnesota
Discoverer
Christian Leopold von Buch
Unknown
Etymology
From Greek di + base
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock