Definition
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Discoverer
Etymology
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Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism
From minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine which are green in color
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
From 17th century, because of its greasy feel and use like a soap
Fine Grained Rock, Opaque Rock