Definition
Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
History
Origin
France
Central Europe
Discoverer
Unknown
Unknown
Etymology
From Latin varius, speckled, variegated
From Latin granulum, a little grain or fine grained
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
-
Other Categories
Opaque Rock
Coarse Grained Rock, Medium Grained Rock, Opaque Rock