1977•OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)Requires access
Solubility of natural fluorite at 25/sup 0/C
Dakota Brown, Charles Elmer Roberson
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Abstract
The solubility products of two samples of natural fluorite from Rosiclare, Ill., and from Madoc, Ontario, were determined at 25/sup 0/C by analyses of calcium and fluoride in sodium perchlorate solutions of varying ionic strength over a period of 3 years. Calcium concentrations were analyzed by atomic absorption spectrophotometry, fluoride concentrations were measured colorimetrically, and fluoride activities were measured using a specific ion electrode. The solubility products at the end of 3 years were determined by extrapolation to zero ionic strength. The final solubility product was found to be 10/sup -10.58 +- 0.17/.