Definition
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar
History
Origin
Iceland
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Discoverer
Ian S. E. Carmichael
Alexandre Brongniart and René Just Haüy
Etymology
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
From Greek trakhus rough’ or trakhutēs roughness
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