Definition
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Etymology
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Talc carbonate is nothing but a rock sequence or a mineral composition found in metamorphic ultramafic rocks.
From medieval Latin, talcum
Fine Grained Rock, Opaque Rock
Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition
From English feldspar and -ite
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock