steatite

Definitions of steatite
  1. noun
    a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments
    synonyms: soap-rock, soaprock, soapstone
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    type of:
    talc, talcum
    a fine grained mineral having a soft soapy feel and consisting of hydrated magnesium silicate; used in a variety of products including talcum powder
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