SYMPOSIA PAPER Published: 01 January 1988

Thermogravimetry of Selected Clays and Clay Products


The application of thermogravimetry to the characterization of kaolinite and smectite clay minerals is presented. Examples of differing crystallinity of kaolinites are used. In the study of the smectite clay minerals both dioctahedral and trioctahedral members are included. A unique industrial example of the use of thermogravimetry to follow the cleaning of a bentonite specimen and then its conversion to an organo-clay product, which is used as a component of drilling fluids in the petroleum industry, is demonstrated. Several hectorite specimens representing both raw carbonate bearing clay mineral ores and processed hectorite (carbonate-cleaned) specimens were analyzed by computerized thermogravimetry.

Author Information

Earnest, CM
Berry College, Rome, GA
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Developed by Committee: E37
Pages: 272–287
DOI: 10.1520/STP26414S
ISBN-EB: 978-0-8031-5066-9
ISBN-13: 978-0-8031-1177-6