Definition
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption
Aplite is a fine-grained granite composed mainly of feldspar and quartz
History
Origin
Italy
Iran
Discoverer
Unknown
Unknown
Etymology
From a Latin word tophous then in Italian tufo and finally tuff
From German Aplit, from Greek haploos simple + -ite
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock