saponite


sap·o·nite

noun \ˈsa-pə-ˌnīt\

Definition of SAPONITE

:  a hydrous magnesium aluminum silicate occurring in soft soapy amorphous masses and filling veins and cavities (as in serpentine)

Origin of SAPONITE

Swedish saponit, from Latin sapon-, sapo soap
First Known Use: circa 1849

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