贵州灰家堡金矿田成矿与蚀变元素迁移

发布时间：2018-03-30 10:18

本文选题：地球化学　切入点：元素迁移　出处：《成都理工大学学报(自然科学版)》2017年04期

【摘要】：选择贵州省灰家堡金矿田内最为典型的水银洞矿床和太平洞矿床,研究卡林型金矿床围岩蚀变过程中元素迁移规律与方式,探讨围岩蚀变与金矿化的内在联系。典型矿床围岩→矿化围岩→矿石的岩相学特征及与其对应的Grant质量平衡方程计算结果表明,卡林型金矿各成矿阶段所对应的围岩蚀变类型与通过计算所反映的元素迁移规律相一致;地球化学热力学计算结果显示,Au主要以AuHS0络合物的形式在成矿溶液中迁移。元素迁移研究的结果证明不同成矿阶段发生的围岩蚀变促进卡林型金矿主要成矿物质发生迁移,进而沉淀富集成矿。
[Abstract]:This paper selects the most typical Shuiyindong deposit and Taiping Dong deposit in Shijiapu gold ore field of Guizhou Province, studies the law and mode of element migration in the alteration process of surrounding rock of Carlin type gold deposit, and probes into the internal relation between the alteration of surrounding rock and the gold mineralization. 鈫扢ineralized surrounding rock. 鈫扵he lithofacies characteristics of ore and the corresponding Grant mass balance equation show that the alteration types of surrounding rock corresponding to each metallogenic stage of Carlin type gold deposit are consistent with the law of element migration reflected by calculation. The results of thermodynamic calculation of geochemistry show that au mainly migrate in the form of AuHS0 complex in metallogenic solution. The results of element migration show that the alteration of surrounding rock in different metallogenic stages promotes the migration of major ore-forming minerals in Carlin type gold deposits. And then precipitate and enrich ore-forming.
【作者单位】：中国国土资源航空物探遥感中心;成都理工大学地球科学学院;中国地质调查局发展研究中心;国土资源部矿产勘查技术指导中心;北京超图软件股份有限公司;黑龙江省有色金属地质勘查七0七队;贵州省有色金属和核工业地质勘查局七总队;国土资源实物地质资料中心;
【基金】：中国地质调查局地调项目(12120120300016006)
【分类号】：P618.51

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