中文摘要：

文章使用开放流动反应装置研究了中低温热液矿床中常见脉石矿物碳酸盐（自云石、菱锰矿）在25℃～250℃水中化学动力学溶解反应速率。在25℃条件下，碳酸盐矿物的溶解速率r（Ca）〉r（Mn）〉r（Mg）。碳酸盐矿物在水中200℃时具有最大溶解速率。随着温度的继续升高，Mg、Mn碳酸盐的溶解反应速率会下降，容易形成白云石和锰碳酸盐。实验研究结果有助于理解中低温环境下，金属矿石的主要伴生碳酸盐矿物与水反应的化学动力学限制，试图说明中低温矿石伴随白云石和锰碳酸盐的沉淀机理。

英文摘要：

Kinetics of some carbonate minerals from mesothermal-epithermal deposits were studled by using a continuous flow reactor of an open system. The dissolution rates of dolomite and rhodochrosite were from 25 to 250 ℃. The measured dissolution rates of bivalent metal carbonate minerals at 25℃ were r （Ca） 〉 r （Mn） 〉 r （Mg）. The experimental results show that carbonate minerals have the maximal dissolution rate at 200℃. Continue to rise temperature, it would cause the decrease of dissolution rate of magnesium and manganese-carbonate minerals. This study helps us to understand the ore-forming chemical environments for accommodating carbonate under the middle-to-low temperature conditions, and also reveals the psecipitation mechanism of dolomite and manganese carbonate minerals in the temperature range from 25℃ to 250℃.