Definition
Mudstone is a fine-grained, dark gray sedimentary rock, which is formed from silt and clay and is similar to shale but has less laminations
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
History
Origin
-
Iceland
Discoverer
William Smith
Ian S. E. Carmichael
Etymology
From the English mud and stone, from low German mudde and stainaz
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock