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From Anion A of Switzerland, to Fuller's Earth of the U.S. Midwest, to Argiletz's French Green clay in France, to the fine glacier clays of Canada, to the Dead Sea Muds of the middle east, to the vibrant green bentonites of Wyoming, to the pale grey bentonites of Death Valley, montomorillonite, bentonite, illite, and zeolite have held a long standing reputation for curative powers in natural medicine.
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