Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
Indonesia
Tamil Nadu, India
Discoverer
Cornish Gossen
T. H. Holland
Etymology
From Cornish gossen from gos, blood from Old Cornish guit
From Job Charnock, an administtrator of East India Company
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Plutonic
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock