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单词 Steatite talc
释义

Steatite talc

英语百科

Soapstone

Steatite in its raw mineral form
A block of talc
The 21st-century BCE statue of Iddi-Ilum of Mari is made of soapstone
The outer layers of the Christ the Redeemer sculpture in Rio de Janeiro are made of soapstone.

Soapstone (also known as steatite, or soaprock) is a talc-schist., which is a type of metamorphic rock. It is largely composed of the mineral talc and is thus rich in magnesium. It is produced by dynamothermal metamorphism and metasomatism, which occurs in the zones where tectonic plates are subducted, changing rocks by heat and pressure, with influx of fluids, but without melting. It has been a medium for carving for thousands of years.

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