Definition
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.
History
Origin
Germany
Indonesia
Discoverer
Christian Leopold von Buch
Cornish Gossen
Etymology
From Latin glaber bare, smooth, bald
From Cornish gossen from gos, blood from Old Cornish guit
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Plutonic
-
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock