Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
Hawaiite is volcanic rock that resembles basalt. It is an olivine basalt with intermediate composition between alkali olivine and mugearite
History
Origin
Pike County, U.S
Hawaii Islands
Discoverer
Unknown
Joseph Iddings
Etymology
From French, from peridot + -ite
From Hawaii Islands
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Opaque Rock