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Saponite is a monoclinic mineral of the montmorillonite group. Its chemical formula is (½Ca,Na)0.33(Mg,Fe+2)3(Si,Al)4O10(OH)2·4H2O.

It is soft, massive, and plastic, and exists in veins and cavities in serpentinite and basalt. The name is derived from the Greek sapo, soap. Other names include bowlingite; mountain soap; piotine; soapstone.



This article contains material from the U.S. Bureau of Mines Dictionary of Mining, Mineral, and Related Terms.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Saponite". A list of authors is available in Wikipedia.
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