First Known Use: circa 1849
Dictionary
saponite
noun sap·o·nite \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)
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Origin of SAPONITE
Swedish saponit, from Latin sapon-, sapo soap
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