1 Definition
1.1 Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.
Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt
1.2 History
1.2.1 Origin
Indonesia
Pike County, U.S
1.2.2 Discoverer
1.3 Etymology
From Cornish gossen from gos, blood from Old Cornish guit
From the chemical and mineralogical composition of the upper mantle of the Earth
1.4 Class
Metamorphic Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock