Definition
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
History
Origin
Central Europe
Germany
Discoverer
Unknown
Van Tooren
Etymology
From Latin granulum, a little grain or fine grained
From Greek tephra, ashes from Indo-European base, to burn
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
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock