Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Fuller's earth is any non-plastic clay or claylike earthy material that can be used to decolorize, filter, and purify animal, mineral, and vegetable oils and greases. In 2005, the United States of America was the largest producer of fuller's earth with almost 70% world share followed at a distance by Japan and Mexico, reports the British Geological Survey. Fuller's earth usually has a high magnesium oxide content. In the United States, two varieties of fuller's earth are mined, mainly in the southeastern states. These comprise the minerals montmorillonite or palygorskite (attapulgite) or a mixture of the two; some of the other minerals that may be present in fuller's earth deposits are calcite, dolomite, and quartz.

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