Definition
A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
History
Origin
USA
USA
Discoverer
Usiglio
Unknown
Etymology
From a sediment left after the evaporation
From 17th century, because of its greasy feel and use like a soap
Class
Sedimentary Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Family
Group
-
-
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock