Definition
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
History
Origin
-
Iceland
Discoverer
Alexandre Brongniart and René Just Haüy
Ian S. E. Carmichael
Etymology
From Greek trakhus rough’ or trakhutēs roughness
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock