Definition
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Italy
Germany
Discoverer
Unknown
Christian Leopold von Buch
Etymology
From a Latin word tophous then in Italian tufo and finally tuff
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