Definition
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Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase
From French anorthose plagioclase + -ite1
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock
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