Definition
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
History
Origin
USA
Hawaii Islands
Discoverer
Unknown
Unknown
Etymology
From silica, the main mineral content of Jasperoid
From Greek pikros bitter + -ite, 19th century
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock