| 滇西北烂泥塘斑岩铜矿床原生晕异常结构研究 |
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| 引用本文： | 李佑国,费光春,龙训荣,何朝鑫.滇西北烂泥塘斑岩铜矿床原生晕异常结构研究[J].沉积与特提斯地质,2022,42(1):30-39. |
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| 作者姓名： | 李佑国 费光春 龙训荣 何朝鑫 |
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| 作者单位： | 成都理工大学地球科学学院,四川 成都 610059 |
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| 基金项目： | 特提斯构造域地质构造编图及区域对比研究(92055314);中国地质调查项目"云南春都-烂泥塘斑岩铜矿田构造分析与靶区预测"(12120113096200) |
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| 摘 要： | 烂泥塘矿床是云南香格里拉地区典型的斑岩型铜矿床,主矿体产于在地表以下300～500米,地表矿化带仅见脉状铜矿体和铜矿化体.为研究云南香格里拉烂泥塘斑岩铜矿床的原生晕异常结构,本文以异常结构模式理论和方法为基础,对矿床地表和坑道岩矿石样品开展了元素组合、异常特征和水平分带规律研究.结果表明,烂泥塘铜矿床地球化学系统的结构...
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| 关 键 词： | 斑岩铜矿床 原生晕 异常结构 烂泥塘 滇西北 |
| 收稿时间： | 2021/9/16 0:00:00 |
| 修稿时间： | 2021/12/10 0:00:00 |
A study of primary halo anomaly structure of the Lannitang porphyry copper deposit in northwest Yunnan, China |
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| LI Youguo,FEI Guangchun,LONG Xunrong,HE Chaoxin.A study of primary halo anomaly structure of the Lannitang porphyry copper deposit in northwest Yunnan, China[J].Sedimentary Geology and Tethyan Geology,2022,42(1):30-39. |
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| Authors: | LI Youguo FEI Guangchun LONG Xunrong HE Chaoxin |
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| Institution: | College of Earth Science, Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | The Lannitang deposit in Shangri-La county, Yunan Province, is a typical porphyry copper deposit. The main orebodies are distributed 300~500 meters below the surface and the vein-type orebodies develop in the surface. In order to decipher the primary halo anomaly structure, based on the theory and method of anomaly structure, the element association, anomaly characteristics and horizontal zonation of surface of tunnel rocks and ore samples of the deposit are conducted.Research results show that the structure of the geochemical system of the Lannitang copper deposit consists of a primary halo of enriched and depleted ore-forming elements and their associated elements. The positive anomalies of Cu and Mo occupy the ore primary haloes, and the negative anomalies of Sc, Ti, V, Cr and W coincide with the positive anomalies of Cu and Mo. Positive anomalies of S, and negative anomalies of Mn, Co, Zn and Cd appear at the edge of positive anomalies of Cu and Mo. The positive anomalies of Zn, Cd, Ag, Pb, Hg, and Sb appear in the periphery of the metallogenic belt. Ag, Pb, Hg, and Sb belong to distal indicator elements or supra ore halo elements. The contents of CaO, K2O and Na2O of the samples in the copper mineralization zone are relatively low, which belong to low background or negative anomaly, while the peripheral area belong to middle background area or high background area.It is suggest that the ratio of the geometric mean of Cu and Mo to the geometric mean of Sc, Ti, V and Cr can be used as a marker to delineate the contrast geochemical anomaly, which can better define the spatial location of copper mineralization bodies. |
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| Keywords: | porphyry copper deposit primary halo anomaly structure Lannitang northwestern Yunnan province |
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