Definition
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
History
Origin
USA
Southern Alps, France
Discoverer
Unknown
Jakob Sederholm
Etymology
From 17th century, because of its greasy feel and use like a soap
From the Greek word migma which means a mixture
Class
Metamorphic Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock