| 范良军,赵艳林,李伟清,洪建磊,蔡金君,陈伟.缅甸蒙育瓦铜矿床七星塘矿区矿床地球化学特征及地质意义[J].矿产勘查,2025,16(11):2432-2442 |
| 缅甸蒙育瓦铜矿床七星塘矿区矿床地球化学特征及地质意义 |
| Geochemical characteristics and geological significance of the Monywa copper deposit in Kyisintaung mining area, Myanmar |
| 投稿时间：2024-02-29 |
| DOI：10.20008/j.kckc.202511004 |
| 中文关键词: 矿床地球化学 斑岩铜矿 七星塘 |
| 英文关键词: geochemistry of mineral deposits porphyry copper deposit Kyisintaung |
| 基金项目:本文受云南省有色地质局“缅甸中部盆地蒙育瓦式斑岩铜矿成矿规律及预测研究”项目(2020-07)和云南省有色地质局“百名地质技术人才培养工程”(202242)联合资助。 |
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| 中文摘要: |
| 蒙育瓦铜矿是特提斯成矿域东段的重要斑岩型矿床，七星塘(Kyisintaung)矿区是蒙育瓦铜矿的四大矿区之一。为进一步研究蒙育瓦铜矿矿床成因，本文以七星塘(Kyisintaung)矿区为研究对象开展岩石地球化学特征研究。岩石化学分析结果显示，七星塘矿区含矿安山玢岩具高硅、高铝、富钾、高铁和低钠特征，样品强烈富集 Pb、W、Sb，明显亏损 Ti、Li，样品配分曲线呈右倾型，具弱 Eu正异常。S、Pb同位素分析结果显示，七星塘矿区铜成矿作用与俯冲造山过程背景下的岩浆活动有关，矿化剂硫主要来自岩浆或火山作用，成矿物质主要来自地幔和上地壳物质的混合。本研究为深入认识蒙育瓦斑岩铜矿的成因提供了重要的地球化学依据。 |
| 英文摘要: |
| The Monywa copper mine is an important porphyry deposit at the eastern end of the Tethys Metallo.genic Belt, and the Kyisintaung mine is one of the four major mining areas of the Monywa copper mine. In order tofurther study the genesis of the Monywa copper deposit, this study focuses on the rock geochemical characteristics ofthe Kyisintaung mining area. The results of petrochemical analysis showed that the ore-bearing andesite porphyry in Kyisintaung mining area had the characteristics of high silicon, high alumina, potassium rich, high iron and lowsodium, and the samples were strongly enriched in Pb, W and Sb, and the Ti and Li were obviously deficient, andthe sample composition curve was right-dipping, with weak Eu positive anomaly. The results of S and Pb isotopeanalysis showed that copper mineralization in Kyisintaung mining area was related to magmatic activity under thebackground of subduction orogeny, and the mineralizing agent sulfur mainly came from magma or volcanism, andthe mineralization mainly came from the mixture of mantle and upper crustal materials. This study provides impor.tant geochemical evidence for a deeper understanding of the genesis of the Monywa porphyry copper deposit. |
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