Definition
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
Teschenite is coarse- to fine-grained, dark-coloured intrusive igneous rock that usually occurs in sills, dikes and irregular masses and is always altered to some extent
History
Origin
Iceland
Scotland
Discoverer
Ian S. E. Carmichael
Unknown
Etymology
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
From its occurrence near Teschen. now known as Cieszyn, Pol., Scotland
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Plutonic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock