Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.
Dunite is a green to brownish coarse-grained igneous rock mainly consisting of olivine
History
Origin
Indonesia
New Zealand
Discoverer
Cornish Gossen
Ferdinand von Hochstetter
Etymology
From Cornish gossen from gos, blood from Old Cornish guit
From the name of Dun Mountain, New Zealand, + -ite1
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Plutonic
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock