Thermal expansion of some borate and borosilicate minerals (fluoborite, danburite, sinhalite, datolite, elbaite, dravite, kornerupine, dumortierite, ferro-axinite, and manganaxinite) between 25 and about 1200 ̊C / - Hemingway, Bruce S. (U.S. Dept. of the Interior, U.S. Geological Survey, 1996)