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考虑到银主要富集在中低温热液阶段，同时考虑到成矿溶液中氨基酸的存在及其不同类型，对含银矿物样品在中性、碱性和酸性氨基酸热液中的物理化学行为分别进行了实验研究。结果表明，含有酸性氨基酸（谷氨酸）的热水溶液，比仅含ＮａＣｌ的热卤水、含碱性氨基酸（赖氨酸）和中性氨基酸（氨基乙酸和氨基丙酸）的热水溶液，更有利于银的活化和迁移。实验同时表明，银与各氨基酸形成的易溶配位化合物的稳定性受到温度的强烈影响。在２５℃左右，是银－氨基酸配位化合物稳定存在的最适宜温度条件；在１００℃以上，随温度的逐渐升高，银在含氨基酸热液中的溶出量明显减少。表明银－氨基酸的配位化合物强烈地分解，而使银得以更多地沉积。银在含氨基酸热液中的这种物理化学行为，和铅在含有酸性氨基酸（谷氨酸）、铜在含有碱性氨基酸（赖氨酸）热液中的活化、迁移与沉积作用不无相似之处
Considering that the silver is mainly concentrated in the middle and low temperature hydrothermal stage, taking into account the existence of the amino acids in the ore-forming solution and its different types, the physico-chemical behavior of silver-bearing mineral samples in neutral, basic and acidic amino acid hydrothermal fluids An experimental study was carried out. The results show that hot aqueous solutions containing acidic amino acids (glutamic acid) are more effective than hot brine containing only NaCl, hot aqueous solutions containing both basic amino acids (lysine) and neutral amino acids (glycine and alanine) Conducive to the activation and migration of silver. Experiments also show that the stability of the soluble coordination compounds of silver with each amino acid is strongly influenced by temperature. At 25 ℃, it is the most suitable temperature condition for the stable existence of silver-amino acid coordination compounds. When the temperature is above 100 ℃, the leaching amount of silver in the hydrothermal solution containing amino acids decreases obviously with increasing temperature. This shows that silver-amino acid complexes decompose strongly and silver is deposited more. This physico-chemical behavior of silver in amino acid-containing hydrothermal fluids is similar to that of lead in the activation, transport and deposition of acidic amino acids (glutamic acid) and copper in hydrothermal fluids containing basic amino acids (lysine) Where