Definition
Ignimbrite is a volcanic rock consisting mainly of pumice fragments, formed by the consolidation of material deposited by pyroclastic flows
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
New Zealand
Germany
Discoverer
Patrick Marshall
Christian Leopold von Buch
Etymology
From Latin ignis fire + imber, imbr- shower of rain, storm cloud + -ite
From Greek di + base
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock