Definition
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption
History
Origin
Iceland
Italy
Discoverer
Ian S. E. Carmichael
Unknown
Etymology
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
From a Latin word tophous then in Italian tufo and finally tuff
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock