Definition
Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
History
Origin
Japan
New Zealand
Discoverer
Unknown
Ferdinand von Hochstetter
Etymology
From its occurrence in the Izu-Bonin arc south of Japan
From the name of Dun Mountain, New Zealand, + -ite1
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock