Difference between revisions of "Mountain soap"
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Latest revision as of 07:41, 24 July 2013
Description
A montmorillonite type clay. Mountain soap, or saponite, it composed of hydrated aluminum magnesium silicate. The soft mineral has a greasy or soapy feel. It is used as a filler in crayons.
Synonyms and Related Terms
rock soap; saponite