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地质论评  2009 

低温条件下长石溶解模拟实验研究

Keywords: 碱性长石,斜长石,静态实验,溶解作用。

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Abstract:

为了研究有机酸和无机酸对长石的溶解能力以及不同有机酸对长石溶解能力的差异,笔者等在80℃条件下,在不同pH值(4、6和8)的分别含有盐酸、乙酸和草酸的溶液中,对碱性长石和斜长石进行了溶解模拟实验研究。实验结果表明:酸性(pH=4)和弱酸性(pH=6)条件下,乙酸对两种长石的溶解能力大于草酸,碱性条件(pH=8)下草酸的溶解能力最大,无论在酸性或碱性条件下,有机酸对长石的溶解能力均高于无机酸,酸性(pH=4)条件下,斜长石与碱性长石溶解量差别不大,在弱酸性(pH=6)和碱性(pH=8)条件下,斜长石的溶解量高于碱性长石。

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