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Soapstone
Soapstone

Syenite
Syenite



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1 Definition
1.1 Definition
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
Syenite is a coarse-grained igneous rock which is composed mainly of alkali feldspar and various ferromagnesian minerals
1.2 History
1.2.1 Origin
USA
Unknown
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From 17th century, because of its greasy feel and use like a soap
From French syénite, from Latin Syenites (lapis ) (stone) of Syene
1.4 Class
Metamorphic Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Plutonic
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock