南秦岭柞水山阳矿集区王家坪金矿床地质特征及矿床成因探讨

丁坤; 王瑞廷; 王智慧; 刘凯; 申喜茂

doi:10.19751/j.cnki.61-1149/p.2022.01.013

南秦岭柞水山阳矿集区王家坪金矿床地质特征及矿床成因探讨

丁坤^1,4,
王瑞廷^2,3,4, ,,
王智慧¹,
刘凯⁵,
申喜茂⁶

1. 陕西铁路工程职业技术学院, 陕西渭南 714099;
2. 陕西省矿产资源综合利用工程技术研究中心, 陕西西安 710054;
3. 西北有色地质矿业集团有限公司, 陕西西安 710054;
4. 长安大学地球科学与资源学院, 陕西西安 710054;
5. 商洛西北有色七一三总队有限公司, 陕西商洛 726000;
6. 西安西北有色地质研究院有限公司, 陕西西安 710054

基金项目:

陕西省教育厅科研计划项目（21JK0581），长安大学科技处创新团队培育资助项目（300102279401），陕西铁路工程职业技术学院科研项目（KY2020-42）和陕西铁路工程职业技术学院科技创新团队项目（KJTD202001）联合资助。

详细信息

作者简介:
丁坤(1990-),男,博士,讲师,主要从事矿床学方向的研究工作。E-mail:1003492885@qq.com。

通讯作者:
王瑞廷(1969-),男,博士,教授级高工,博士生导师,主要从事矿产地质与勘查技术综合研究工作。E-mail:wrtyf@163.com。

中图分类号: P611.01
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出版历程
- 收稿日期: 2021-05-16
- 修回日期: 2021-07-14
- 网络出版日期: 2022-07-28
- 发布日期: 2022-03-04

Geological Characteristics and Genesis of the Wangjiaping Gold Deposit in Zhashui-Shanyang Ore Concentration area of South Qinling

DING Kun^1,4,
WANG Ruiting^2,3,4, ,,
WANG Zhihui¹,
LIU Kai⁵,
SHEN Ximao⁶

1. Shaanxi Railway Institute, Weinan 714099, Shaanxi, China;
2. Shaanxi Provincial Engineering and Technology Research Center for Comprehensive Utilization of Mineral Resources, Xi'an 710054, Shaanxi, China;
3. Northwest Geological Exploration for Nonferrous Metals, Xi'an 710054, Shaanxi, China;
4. Shcool of Earth Science and Resources, Chang'an University, Xi'an 710054, Shaanxi, China;
5. No. 713 Geological Team, Northwest Bureau of Geological Exploration for Nonferrous Metals, Shangluo 726000, Shaanxi, China;
6. Xi'an Northwest Research Institute of Nonferrous Metals Limited Company, Xi'an 710054, Shaanxi, China

摘要

摘要: 王家坪矿床位于南秦岭柞水-山阳矿集区东部，金矿体主要产于上泥盆统星红铺组沉积地层中；金属矿物以黄铁矿为主，与金成矿关系密切的矿物为黄铁矿和雌黄。笔者利用LA-ICPMS和LA-MC-ICPMS对成矿期不同阶段硫化物进行微量元素及硫同位素研究，结果表明，该矿床成矿中阶段黄铁矿Co/Ni值为0.003~1.1，均小于1，暗示黄铁矿不可能为火山成因；成矿晚阶段黄铁矿Co/Ni值介于0.02~5.87，表明该阶段黄铁矿与岩浆作用和沉积作用有关。硫同位素测试结果显示，成矿早阶段硫化物δ³⁴S为-28.5‰~20.33‰，成矿中阶段硫化物的δ³⁴S为-28.5‰~-19.95‰，成矿晚阶段硫化物的δ³⁴S为11.91‰~20.33‰，暗示硫同位素组成变化很大，具有明显的多源性特征，成矿过程中硫可能由岩浆S和赋矿围岩S混合而成。王家坪矿床为卡林型金矿床，该矿床的发现对在柞水-山阳矿集区寻找卡林型金矿床具有重要借鉴意义。
- 成矿物质来源 /
- 硫同位素 /
- 微量元素 /
- 王家坪金矿床 /
- 柞水-山阳矿集区
Abstract: The Wangjiaping gold deposit is located in the east of Zhashui-Shanyang ore concentration area in South Qinling.The gold ore body mainly lies in the sedimentary strata of the upper Devonian Xinghongpu Formation, with pyrite being the main metal mineral. Gold mineralization are closely related to pyrite and orpiment. In this paper, LA-ICPMS and LA-MC-ICPMS were used to study the trace elements and sulfur isotopes of sulfide in different stages of mineralization.The results show that the Co/Ni ratios of pyrite in the middle stage of mineralization range from 0.003 to 1.1, most of which are less than 1, excluding volcanic origin. In addition, The Co/Ni ratios of pyrite in the late stage of mineralization range from 0.02 to 5.87, suggesting that pyrite in this stage is related to magmatism and sedimentation process. The S isotope results show that the δ³⁴S value of early sulfide ranges from -28.5‰ to 20.33‰. The sulfide from intermediate stage ranges from -28.5‰ to -19.95‰,whereas the late sulfide ranges from 11.91‰ to 20.33‰,suggesting an inhomogeneous sulfur isotopic composition and an obvious multi-source characteristics. Hence, it is inferred that the sulfur may be derived from the mixture of sulfur and host rock sulfur. Therefore, the Wangjiaping deposit is a Carlin-type gold deposit.It has great significance for the future prospecting of Carlin-type gold deposit in Zhashui-Shanyang ore concentration area.
- source of ore-forming material /
- S isotope /
- trace elements /
- Wangjiaping gold deposit /
- Zhashui-Shanyang ore concentration area

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