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The formation of anhydrous CaCO 3 polymorphs is very common and widespread in low-temperature inorganic and biogenic environments. An increase in aqueous carbonate concentration frequently induces CaCO 3 formation in nature. Nevertheless, no systematic experiment has assessed the impact of the continuous accumulation of aqueous carbonate ions on CaCO 3 formation. Also, the...
Stable oxygen isotopic fractionation during inorganic calcite precipitation was experimentally studied by spontaneous precipitation at various pH (8.3<pH<10.5), precipitation rates (1.8<log R<4.4μmolm −2 h −1 ) and temperatures (5, 25, and 40°C) using the CO 2 diffusion technique.The results show that the apparent stable oxygen isotopic fractionation factor between...
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