华南地质2026，Vol.42Issue(3)：520-531,12.DOI:10.3969/j.issn.2097-0013.2026.03.012
云南大坪极薄石英脉型金矿开采阶段资源控制方法探讨
Discussion on Resource Control Methods in the Mining Stage of Daping Extremely Thin Quartz Vein-Type Gold Deposit in Yunnan
张建强 1张陆佳 2梁尧普3
作者信息
- 1. 紫金矿业集团股份有限公司,福建 厦门 361000||新疆哈巴河阿舍勒铜业股份有限公司,新疆 哈巴河 836700
- 2. 新疆哈巴河阿舍勒铜业股份有限公司,新疆 哈巴河 836700
- 3. 元阳县华西黄金有限公司,云南 元阳 662400
- 折叠
摘要
Abstract
[Objective]The Daping gold deposit in Yunnan Province is an important and large-scale gold deposit with a long mining history,representing a typical extremely thin quartz vein-type deposit.This paper explores an integrated exploration approach combining trenching and drilling,aiming to assist in the reasonable delineation of ore bodies in this deposit and to provide a reference for the exploration and delineation of similar thin quartz vein-type gold deposits.[Methods]Based on an analysis of ore characteristics and the occurrence state of gold,bulk production-scale tests were conducted on quartz veins and altered wall rocks previously considered to be sulfide-free,demonstrating that their gold content possesses industrial value.Through a combination of exploration and mining comparison,a method is proposed where drilling is used to define the ore-controlling structures,guide trenching operations,and delineate new ore bodies based on bulk sampling analysis from trenches.[Results]For thin vein-type gold deposits,the judgment based on sulfide content should be overcome,taking into account the predominantly intergranular occurrence of gold and the structural ore-control patterns.Pure quartz veins without sulfides and silicified wall rocks should be included as industrial ore bodies.Exploration should adopt a phased combined approach involving sparse drilling control in the early stage and trenching verification in the later stage,with ore-bearing ratios used in resource estimation and evaluation.[Conclusions]Using grades determined by conventional chemical analysis to judge or delineate ore bodies may lead to ore loss.When using drill holes to delineate ore bodies for resource estimation,drill-hole intervals that intersect ore-bearing structures but fail to meet conventional cut-off grades should also be included,with evaluation based on the ore-bearing ratio.This approach provides a more realistic reflection of the deposit.关键词
大坪金矿/薄脉型矿体/矿体圈定/资源量估算/云南Key words
Daping gold deposit/thin-vein type ore body/ore body delineation/resources estimating/Yunan分类
天文与地球科学引用本文复制引用
张建强,张陆佳,梁尧普..云南大坪极薄石英脉型金矿开采阶段资源控制方法探讨[J].华南地质,2026,42(3):520-531,12.
