Definition
Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
History
Origin
Norway
Pike County, U.S
Discoverer
Unknown
Unknown
Etymology
From the Norwegian name for Norway, Norge
From French, from peridot + -ite
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock