Definition
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica
History
Origin
Iceland
Western Australia, Minnesota
Discoverer
Ian S. E. Carmichael
Newton Horace Winchell
Etymology
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
From the name of Taconic Mountains in New England
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Volcanic
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock