Definition
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
History
Origin
Hawaii Islands
Western Australia, Minnesota
Discoverer
Unknown
Unknown
Etymology
From Greek pikros bitter + -ite, 19th century
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
Volcanic
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock