Definition
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
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
History
Origin
New Zealand
-
Discoverer
Ferdinand von Hochstetter
William Smith
Etymology
From the name of Dun Mountain, New Zealand, + -ite1
From the English mud and stone, from low German mudde and stainaz
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock