Definitions for soapstoneˈsoʊpˌstoʊn
Random House Webster's College Dictionary
a massive variety of talc with a soapy feel, used for hearths, washtubs, etc.
Ref: Also called steatite.
Origin of soapstone:
soapstone, soaprock, soap-rock, steatite(noun)
a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments
a soft rock, rich in talc, also containing serpentine and either magnetite, dolomite or calcite
see Steatite, and Talc