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关于高温、高压下SnO_2在水和电解质水溶液中溶解度的实验资料,对确定锡的迁移形式和锡石在内生矿床中的沉淀条件均具有重要意义。尽管这一问题具有现实性,但SnO_2在水和电解质溶液中的溶解度的实验工作做的还不多,而且已有的实验资料既不完整也彼此不一致。 G.W.Morey和J.M.Hesselgesser(1951)在500℃和200兆帕条件下测定了含SiO_2和Fe_2O_3的天然锡石的溶解度,在此条件下,实验时间是77小时,SnO_2在溶液中的浓度为0.00025％(SnO_2/公斤H_2O为
Experimental data on the solubility of SnO 2 in water and electrolyte aqueous solution under high temperature and pressure is of great significance to determine the migration form of tin and the precipitation conditions of cassiterite in endogenic deposits. Although this problem is realistic, experimental work on the solubility of SnO 2 in water and electrolyte solutions has not been done much, and the existing experimental data are neither complete nor consistent with each other. GWMorey and JM Hesselgesser (1951) measured the solubility of natural cassiterites containing SiO_2 and Fe_2O_3 at 500 ° C and 200 MPa. Under these conditions, the experimental time was 77 hours and the concentration of SnO_2 in solution was 0.00025% (SnO 2 / kg H 2 O