Definition
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
History
Origin
USA
Iceland
Discoverer
Unknown
Ian S. E. Carmichael
Etymology
From 17th century, because of its greasy feel and use like a soap
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock