Definition
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
History
Origin
Central Europe
Iceland
Discoverer
Unknown
Ian S. E. Carmichael
Etymology
From Latin granulum, a little grain or fine grained
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock