Definition
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
Kenyte is a variety of porphyritic phonolite or trachyte rock with rhomb shaped phenocrysts of anorthoclase with variable olivine and augite in a glassy matrix
History
Origin
Hawaii Islands
Mount Kenya
Discoverer
Unknown
J. W. Gregory
Etymology
From Greek pikros bitter + -ite, 19th century
From the mountain ranges- Mount Kenya and is named by J. W. Gregory in 1900
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock