Abstract
AbstractA rapid automated method is described for differentiation and quantitative determination of calcite and dolomite in earth materials. The method is based on differential pseudo‐first‐order kinetic rates of dissolution of the two carbonate species when reacted with excess of 5M HCl. The method employs manometric measurement of acid‐liberated CO2 with a differential pressure transducer coupled to a strip chart recorder. Tested on calcite and dolomite singly and together in geologic materials, the method is highly discriminatory, highly sensitive, and extremely rapid. Theoretical treatments of pseudo‐first‐order kinetic reactions and of manometric measurements associated with the method are reviewed.
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