Definition
Harzburgite is a plutonic rock of the peridotite group consisting largely of orthopyroxene and olivine
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
History
Origin
Germany
Hawaii Islands
Discoverer
Unknown
Unknown
Etymology
From the name of a town in Harzburg, Germany
From Greek pikros bitter + -ite, 19th century
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock