Definition
Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
History
Origin
Norway
Western Australia, Minnesota
Discoverer
Unknown
Unknown
Etymology
From the Norwegian name for Norway, Norge
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
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock