Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Quartzite is a non-foliated metamorphic rock that forms by the metamorphism of pure quartz Sandstone
Medium Grained Rock, Opaque Rock
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