Definition
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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
Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt
From English word silt and stone and from Proto-Indo-European root sal and stainaz
Fine Grained Rock, Opaque Rock