Study of Short-chain Carboxylates in Ore-forming Fluids of Gold-bearing Quartz Veins in the Southeastern Guizhou

Abstract

Abstract: The short-chain carboxylates and inorganic composition of leachates from the fluid inclusions in some quartz vein-type gold deposits in the southeastern Guizhou Province were determined by ion-chromatogrphy. There are some formate, acetate and oxalate in leachates in small amounts, and the content of formate is greater than that of acetate. Homogenization temperatures of fluids inclusions in quartz studied are above 200℃. Monofunctional carboxylates probably are the important components of meso-high temperature ore-forming fluids.

Key words: short-chain carboxylates, fluid-inclusions in minerals, ion-chromatography, leachates, gold-bearing veins

摘要： 用离子色谱法测定了黔东南某些石英脉型金矿床的石英流体包裹体浸取液中的短链羧酸和无机组分，发现其中含有甲酸盐、乙酸盐和少量草酸盐，且C (甲酸盐)>C (乙酸盐)。所研究的石英中包裹体的均一温度高于200℃。一元羧酸盐可能是中-高温成矿流体中的重要组分。

关键词: 短链羧酸, 矿物流体包裹体, 离子色谱, 浸取液, 含金石英脉

CLC Number:

CAI Junjun,DU Weiwei,ZENG Yishan. Study of Short-chain Carboxylates in Ore-forming Fluids of Gold-bearing Quartz Veins in the Southeastern Guizhou[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

蔡俊军, 杜伟为, 曾贻善. 黔东南某些含金石英脉成矿流体中的短链羧酸[J]. 北京大学学报（自然科学版）.

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Study of Short-chain Carboxylates in Ore-forming Fluids of Gold-bearing Quartz Veins in the Southeastern Guizhou

黔东南某些含金石英脉成矿流体中的短链羧酸

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