| 薛玉山,王瑜亮,门文辉,刘新伟.南秦岭香沟—夏家店金成矿带中重晶石的矿物学特征及其找矿意义[J].地质找矿论丛,2022,37(4):420-428 |
| 南秦岭香沟—夏家店金成矿带中重晶石的矿物学特征及其找矿意义 |
| Mineralogical characteristics and prospecting significance of barite in Xianggou-Xiajiadian Au ore belt in South Qinling area of Shanyang county |
| 投稿时间：2022-04-07 |
| DOI：10.6053/j.issn.1001-1412.2022.04.004 |
| 中文关键词: 金矿床 重晶石化 找矿意义 香沟—夏家店成矿带 南秦岭 |
| 英文关键词:Au deposit barite prospecting significance Xianggou-Xiajiadian Au ore belt South Qinling |
| 基金项目:西安西北有色地质研究院有限公司科研基金项目(编号:2020-J02)资助。 |
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| 中文摘要: |
| 陕西山阳县香沟—夏家店金成矿带,是南秦岭地区重要的金多金属成矿带,产出有王家坪金矿、龙头沟金矿、香沟金-钨矿、夏家店金矿等矿床;在金矿的勘查和研究中均发现Ba元素异常或重晶石化是重要的找矿标志之一。本文通过矿床地质资料对比分析,结合龙头沟金矿、香沟金矿和桐树沟金矿重晶石的电子探针测试研究,发现重晶石中具有一定的金、银矿化特征,尤其是桐树沟金矿区内重晶石中显示一定的金异常(w(Au)=0.03%),同时具有Sb、Cu、Mo、Bi元素异常,与矿区金异常化探元素组合特征一致,有同期矿化的特点。重晶石化或Ba元素化探异常与金化探异常叠加部位均已发现金矿体(金矿床)。结合研究区区域磁异常带是构造岩浆活动带的认识,认为重晶石是深部成矿热液反复活动的指征;在山阳县桐树沟金矿—磨房沟金矿一带和商南县青石沟、过凤楼地区还具有发现金矿床的潜力。 |
| 英文摘要: |
| Xianggou-Xiajiadian Au ore belt is an important Au-polymetallic ore belt in South Qinling area. In the belt occur Wangjiaping Au deposit, Longtougou Au deposit, Xianggou Au-W deposit and Xiajiadian Au deposit etc. The Au ore prospecting and related researches show that there are Ba anomaly and barite can be used as Au ore prospecting mark in the belt. Comparative analysis of the geological data and electronic probe analysis of barite from Longtougou Au deposit, Xianggou Au deposit and Tongshugou Au deposit show that some Au, Ag occur in the barite. Especially barite of Tongshugou Au deposit shows Au anomaly(w(Au)=0.03%) and Sb, Cu, Mo and Bi anomaly. The anomaly is coincided with that of Au anomaly of geochemical survey for the study area. The barite is contemporaneous with the Au mineralization. At over-printing area of Ba anomaly and Au geochemical anomaly Au ore bodies (deposit) have been discovered. Based on viewpoint that the regional magnetic anomaly belt represent the structural-magmatic active belt we consider that the barite is the product of repeated hydrothermal fluid activity at depth and the area from Tongshugou Au deposit to Mofanggou Au deposit and Guofenglou area are potential to find new Au deposits. |
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