Definition
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
Hornblendite is a type of igneous plutonic rock consisting mainly of amphibole hornblende and is a type of Amphibolite rock
History
Origin
Hawaii Islands
-
Discoverer
Unknown
Unknown
Etymology
From Greek pikros bitter + -ite, 19th century
From German, Horn horn + blende
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock