| 原生晕及深穿透地气测量对金矿勘查的指示——以荒漠草原覆盖区内蒙古毕力赫金矿为例 |
| 点此下载全文 |
| 引用本文：万卫,范会虎,徐广明,汪明启,王水龙,刘程.2026.原生晕及深穿透地气测量对金矿勘查的指示——以荒漠草原覆盖区内蒙古毕力赫金矿为例[J].地球学报,47(4):926-938. |
| DOI：10.3975/cagsb.2026.033021 |
| 摘要点击次数: 168 |
| 全文下载次数: 28 |
|
| 基金项目:本文由深地国家科技重大专项(编号: 2025ZD1006505)资助。 |
|
| 中文摘要:毕力赫金矿为华北板块北缘一大型的斑岩-浅成低温热液复合型金矿, 矿化主要产于含金次火山岩体上部内接触带及上覆火山碎屑岩系中。随着浅部探明资源的金矿不断开采, 该矿将出现资源量枯竭危机的情况, 加强矿区深部找矿预测与评价工作势在必行, 为了提取有效的金矿深部找矿指标及验证深穿透地气方法在荒漠草原覆盖区隐伏金矿勘查的应用效果, 本次对毕力赫金矿I号矿带和26号脉开展钻孔原生晕测量研究, 结果表明: 毕力赫金矿化指示元素组合为Au、Ag、As、Sb、Hg、W、Mo、Bi、Pb, Au-W-Mo-Bi-(Pb)元素组合可能指示高品位高温斑岩型金矿化, Au-Ag-As-Sb-(Hg)元素组合可能指示低品位低温热液脉型金矿化, 采用原生晕方法进行金矿深部找矿预测与评价, 能够发现隐伏金矿体的微弱的地球化学找矿信息。同时, 对穿过I号矿带北东、26号脉南东及28脉的区域开展深穿透地气面积性测量研究, 结果表明: 地气方法在荒漠草原覆盖区能够有效地指示深部隐伏金矿化信息, 并为毕力赫金矿区深部找矿圈出了3个找矿靶区, 为矿区深部隐伏矿精准预测与找矿突破提供科学依据和技术支撑。 |
| 中文关键词:原生晕测量 深穿透地气测量 隐伏金矿 毕力赫金矿区 |
| |
| Indication of Primary Halo and Deep-penetration Geogas Measurements for Gold Ore Exploration: A Case Study of the Bilihe Gold Deposit in the Desert-steppe-covered Area, Inner Mongolia |
|
|
| Abstract:The Bilihe gold deposit, located at the northern margin of the North China Craton, is a large porphyry-epithermal composite gold deposit mainly hosted in the inner contact zone of the upper part of a gold-bearing subvolcanic rock mass and the overlying volcanic clastic rock series. The impending resource depletion at this deposit can be attributed to the continuous exploitation of its shallow gold resources; therefore, it is imperative to strengthen the prediction and evaluation of deep mineral exploration in the mining area. This study conducted primary halo measurements on the No. 1 ore belt and No. 26 ore vein of the Bilihe gold deposit to extract effective indicators for prospecting deep-seated gold ore bodies and to verify the application of the deep-penetration geogas method in the exploration of concealed gold deposits in desert-steppe-covered areas. The results showed that the ore-forming indicative element association for gold mineralization at the Bilihe gold deposit includes Au, Ag, As, Sb, Hg, W, Mo, Bi, and Pb. Specifically, the Au-W-Mo-Bi-(Pb) association may indicate high-grade high-temperature porphyry-type gold mineralization, whereas the Au-Ag-As-Sb-(Hg) association may indicate low-grade low-temperature hydrothermal vein-type gold mineralization. The application of the primary halo method to the prediction and evaluation of deep gold ore prospecting can provide weak geochemical prospecting information for concealed gold orebodies. In addition, this study conducted regional geogas areal measurements in areas crossing the northeastern part of the No. 1 ore belt, the southeastern part of the No. 26 ore vein, and the No. 28 ore vein. The results demonstrated that the geogas method can effectively reveal information on deep concealed gold mineralization in desert-steppe-covered areas and delineate three prospecting target areas for deep gold ore prospecting in the Bilihe gold mining area, thus providing a scientific basis and technical support for the accurate prediction and prospecting breakthrough of deep concealed deposits in this area. |
| keywords:primary halo measurement deep-penetration geogas measurement concealed gold deposit Bilihe gold deposit |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|
