Definition
Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption
History
Origin
New Zealand
Italy
Discoverer
Belsazar Hacquet
Unknown
Etymology
From lime and stone in late 14th Century
From a Latin word tophous then in Italian tufo and finally tuff
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock