Definition
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
History
Origin
Hawaii Islands
Central Europe
Discoverer
Unknown
Unknown
Etymology
From Greek pikros bitter + -ite, 19th century
From Latin granulum, a little grain or fine grained
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock