1 Definition
1.1 Definition
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
Ignimbrite is a volcanic rock consisting mainly of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows
1.2 History
1.2.1 Origin
Central Europe
New Zealand
1.2.2 Discoverer
1.3 Etymology
From Latin granulum, a little grain or fine grained
From Latin ignis fire + imber, imbr- shower of rain, storm cloud + -ite
1.4 Class
Metamorphic Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock