Definition
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption
Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites
History
Origin
Italy
Egypt
Discoverer
Unknown
Alois Wehrle
Etymology
From a Latin word tophous then in Italian tufo and finally tuff
From the name of a professor, Alois Wehrle
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock