soapstone(redirected from Alumen plumosum)
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A soft metamorphic rock composed mostly of the mineral talc. Also called steatite.
[From its smooth soapy feel.]
(Minerals) a massive compact soft variety of talc, used for making tabletops, hearths, ornaments, etc. Also called: steatite
[C17: so called because it has a greasy feel and was sometimes used as soap]
a massive variety of talc with a soapy feel, used for hearths, washtubs, etc. Also called steatite.
A soft metamorphic rock composed mostly of the mineral talc.
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|Noun||1.||soapstone - a soft heavy compact variety of talc having a soapy feel; used to make hearths and tabletops and ornaments|