Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
History
Origin
Indonesia
Italy
Discoverer
Cornish Gossen
Marcus Vitruvius Pollio
Etymology
From Cornish gossen from gos, blood from Old Cornish guit
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock