Abrasion resistance is claimed to be an important performance characteristic of ceramics. Properly understood, it can contribute to studies of ceramic technology, use-wear analysis and identification of formation processes. Ceramic briquettes were laboratory-produced, then tested. Grog (650 c. And 900 c firing), fine and coarse sand and horse manure tempers were employed, at concentrations of 20-40% volume to wet clay. Organic tempers caused the greatest reduction in abrasion resistance, compared with untempered briquettes; grog also, surprisingly, brought about a reduction. Mineral tempers had the least effect. The extensive effect of foring temperature on abrasion resistance was also demonstrated. Possible abrasion mechanisms are identified. Appendices provide details of briquette preparation and testing and possible sources of experimental error. Tables, photographs, references.