Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
History
Origin
Indonesia
Germany
Discoverer
Cornish Gossen
Christian Leopold von Buch
Etymology
From Cornish gossen from gos, blood from Old Cornish guit
From Greek di + base
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock