| 路红记.云南个旧老厂矿田东南深部找矿预测[J].矿产勘查,2022,13(7):1033-1049 |
| 云南个旧老厂矿田东南深部找矿预测 |
| Multi-information prospecting prediction of the southeasten Laochang orefield in Gejiu,Yunnan Province |
| 投稿时间：2022-01-15 |
| DOI：10.20008/j.kckc.202207018 |
| 中文关键词: 找矿预测 找矿信息 地质特征 老厂矿田 个旧 |
| 英文关键词: prospecting prediction prospecting information geological characteristics Laochang ore field Gejiu |
| 基金项目:本文受云南省3年地质找矿行动计划项目(Z201010)资助。 |
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| 中文摘要: |
| 本文通过对云南个旧老厂矿田东南深部地质、地球化学和地球物理等找矿信息进行分析研究,总结其成矿规律,运用地质趋势法计算老厂东部构造地球化学异常与地质趋势,运用判别分析提取地球化学成矿信息,运用地质趋势、重力异常、物探电测深资料对花岗岩进行分析预测,运用43#矿体、45-6#矿体、13-2-6#矿体、19#矿体、13-8#矿群及白龙井矿段1785 m中段北沿主巷施工点的工程资料对物化探异常进行检查,分析成矿的概率。同时,结合地质成矿规律,应用物化探异常等综合信息进行找矿预测,在老厂矿田东部预测了“期北山预测区、老熊硐断裂预测区和马鹿塘预测区”三个找矿预测区。通过类比法预测资源潜力,认为老厂矿田东南深部成矿地质条件与19#矿体、13-2-6#矿体及13-8#矿群相类似。按照矿化面积与总金属量之比,对老厂矿田东南深部含矿率取值0.6进行估算预测,老厂矿田东南深部锡、铜、铅、锌、银资源潜力约30万 t,将对延长矿山服务年限起到积极的作用。 |
| 英文摘要: |
| In this paper, based on geological, geochemical and geophysical characteristics of the eastern part of Laochang ore field in Gejiu, Yunnan Province, we summarize metallogenic regularity of this region. Besides, structural geochemical anomaly in the eastern part of Laochang were calculated, geochemiacal information was extracted, potential granite was predicted, probability of mineralization was proposed, by using geological trend method, cluster analysis, synthetic judgment of geological trend, geophysical gravity anomaly, as well as electrical depth sounding data, examination of geochemical and geophysical anomaly via engineering, respectively. Meanwhile, considering metallogenic regularity, we predict three prospecting targets by analyzing geochemical and geophysical information, including Qibeishan, Laoxiongdong and Malutang. In addition, geologic conditions of mineralization in the southeastern part of Laochang ore field is similar to that of No. 19,13-2-6 and 13-8 ore bodies by analogy method. Finally, 300 thousands tons of tin, copper, lead, zinc, silver resources were estimated, which could benefit for prolonging mine life in this area. |
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