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湖南黄沙坪铅锌矿床内带铁闪锌矿铁占位机制的探讨
MECHANISM OF Fe 2+ OCCUPANCY OF THE MARMATITE IN THE INNER ZONE OF THE HUANGSHAPING Pb-Zn DEPOSIT,HUNAN MECHANISM OF Fe 2+ OCCUPANCY OF THE MARMATITE IN THE INNER ZONE OF THE HUANGSHAPING Pb-Zn DEPOSIT,HUNAN
【摘要】 对黄沙坪铅锌矿床内带铁闪锌矿的研究表明,其形成温度为300℃±;压力大致为107Pa;成矿溶液为中偏酸性,硫逸度较高,还原性较强。成矿溶液中Fe和Zn的主要配合物有:FeCl+、FeOH+、FeCl0、Zn(HS)02、ZnCl+、ZnCl02、Fe2+等。Fe2+主要是铁闪锌矿结晶过程中进入八面体位置的,这是ZnS与FeS之间构成有限固溶体的根本原因。
【Abstract】 The marmatite in the inner zone of the Huangshanping Pb-Zn deposit was deposited from weak acid solution with higher sulfuric fugacity and strong redution at 300℃ and 10 7 Pa. The main complexes of Fe and Zn are FeCl +, FeOH +, FeCl 0, ZnCl 0 2, ZnCl +, Zn(HS) 0 2, FeCl 0 2, Fe 2+ ,etc. Because of Zn-Fe limited solid solution, the Fe 2+ entered the octahedral sites of marmatite from solution when marmatite crystallized.
【关键词】 铁闪锌矿;
黄沙坪;
成矿溶液;
Fe2+占位;
【Key words】 marmatite; Huangshaping; ore-forming solution; Fe +2 occupancy;
【Key words】 marmatite; Huangshaping; ore-forming solution; Fe +2 occupancy;
【基金】 国家自然科学基金
- 【文献出处】 地质与勘探 ,GEOLOGY AND PROSPECTING , 编辑部邮箱 ,1999年02期
- 【分类号】P618.420.4
- 【被引频次】16
- 【下载频次】316