Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
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 pseudo- + tachylite, a glassy rock generated by frictional heat within faults.
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock