Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase
From Finnish Rapakivi which stands for crumbly rock
Coarse Grained Rock, Opaque Rock
Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase
Coarse Grained Rock, Medium Grained Rock, Opaque Rock