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学者姓名：邢波
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Abstract ：
The zoning characteristics of alteration and mineralization are the key to establish the deposit model and prospecting prediction of the porphyry-epithermal copper-gold metallogenic system. The Čukaru Peki is a newly discovered giant porphyry-epithermal copper-gold deposit (upper zone: copper 1.54 million tons @ 2.45%, gold 86 t @ 1.37 g/t, lower zone: copper 14.28 million tons @ 0.83%, gold 295 tons @ 0.17 g/t) in Timok, Serbia, Western Tethys. The orebodies are mainly hosted in the late Cretaceous plagioclase andesite, and research on its alteration and mineralization zoning characteristics and prospecting potential is rare. In this paper, we integrated drill hole logging with short-wavelength infrared (SWIR) spectral analysis, microscopic observation, and sulfide EMPA results of rock and ore samples, and the characteristics of hydrothermal alteration and sulfide zoning were determined, and its implication for exploration was discussed. We found that the deposit has zoning characteristics of high-sulfidation epithermal copper-gold mineralization in the upper part, transitional copper-gold mineralization in the middle part, and porphyry copper-gold mineralization in the lower part. The zoning characteristics of hydrothermal alteration in the mining area are apparent. The porphyry intrusion is the centre of the porphyry-type copper-gold mineralization, and potassic alteration zone, propylitic alteration zone, chlorite-white mica zone, and quartz-white mica-zone are developed sequentially outwards. The wavelength of the white mica SWIR Al-OH 2200 nm peak position in the chlorite-white mica zone is generally higher than that in the quartz-white-mica zone. The transitional mineralization develops diaspore-pyrophyllite alterations and dickite-kaolinite superimposed with phyllic alterations. The upper high-sulfidation epithermal copper-gold mineralization develops advanced argillic, which can be divided into quartz-alunite, dickite-kaolinite and montmorillonite from inside outside. Metallic mineral assemblages also have prominent zoning characteristics: the deep to shallow zonation of chalcopyrite + bornite → chalcopyrite + pyrite + (magnetite ± hematite) for the lower porphyry copper-gold mineralization; the mainly tennantite + (bornite + chalcopyrite + digenite + covellite) for the transitional copper-gold mineralization; enargite + covellite for the upper high-sulfidation epithermal copper-gold type mineralization. Overall, the lower part of the ore deposit is a Cu-Fe-S system, the middle part runs through the Cu-As-Sb-S system, and it transforms upwards into a Cu-S system. The sulfide assemblage changes from the high-temperature and low-sulfidation state in the deep early stage to the low-temperature and high-sulfidation state in the mid-shallow at the late stages. In summary, combined with the geochemical data, we established a hydrothermal alteration and sulfide assemblage zoning model and speculated that there is an excellent mineralization potential in the northwestern and deep part of the Čukaru Peki copper-gold deposit. This model presented may have important implications for deep exploration of the Zijinshan gold-copper deposit and late Cretaceous porphyry-epithermal copper-gold deposits in the Gangdise metallogenic belts. © 2023 Science Press. All rights reserved.
Keyword ：
Clay alteration Clay alteration Copper Copper Copper deposits Copper deposits Deposits Deposits Economic geology Economic geology Feldspar Feldspar Gold deposits Gold deposits Infrared radiation Infrared radiation Kaolinite Kaolinite Mica Mica Mineral exploration Mineral exploration Mineralogy Mineralogy Mining Mining Ores Ores Quartz Quartz Spectrum analysis Spectrum analysis Sulfur compounds Sulfur compounds
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| GB/T 7714 | Shan, Siqi , Xie, Guiqing , Liu, Wenyuan et al. Hydrothermal Alteration and Sulfide Zoning Characteristics of the Čukaru Peki Super-large Porphyry-epithermal Copper-gold Deposit in Western Tethys, Serbia and its Implication for Exploration [J]. | Geotectonica et Metallogenia , 2023 , 47 (5) : 1085-1109 . |
| MLA | Shan, Siqi et al. "Hydrothermal Alteration and Sulfide Zoning Characteristics of the Čukaru Peki Super-large Porphyry-epithermal Copper-gold Deposit in Western Tethys, Serbia and its Implication for Exploration" . | Geotectonica et Metallogenia 47 . 5 (2023) : 1085-1109 . |
| APA | Shan, Siqi , Xie, Guiqing , Liu, Wenyuan , Zheng, Jiahao , Xing, Bo . Hydrothermal Alteration and Sulfide Zoning Characteristics of the Čukaru Peki Super-large Porphyry-epithermal Copper-gold Deposit in Western Tethys, Serbia and its Implication for Exploration . | Geotectonica et Metallogenia , 2023 , 47 (5) , 1085-1109 . |
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Abstract ：
查明蚀变和硫化物分带特征是建立斑岩-浅成低温铜金成矿系统的矿床模型与找矿预测的关键.Čukaru Peki铜金矿床是特提斯西段塞尔维亚Timok矿集区近几年新发现的超大型斑岩-浅成低温热液型铜金矿床(上部矿带资源量铜154万吨@2.45％,金86吨@1.37 g/t;下部矿带资源量铜1428万吨@0.83％,金295吨@0.17 g/t),矿体主要产于晚白垩世安山岩中.目前关于该矿床热液蚀变与矿化分带特征及其找矿方向的研究程度相对较低,本文根据钻孔编录信息,利用短波红外(SWIR)光谱技术、光学显微镜和电子探针分析技术,对典型剖面钻孔中的岩矿石样品开展研究,厘定了Čukaru Peki铜金矿床的热液蚀变和金属硫化物分带特征.研究发现该矿床具有垂向分带特征:下部斑岩铜金矿体、中部斑岩-浅成低温过渡铜金矿体和上部高硫型浅成低温热液铜金矿体.矿区热液蚀变分带特征明显,其中斑岩铜金矿体以岩体为中心,由内向外可划分为钾硅酸盐化带、青磐岩化带、绿泥石-白云母带和石英-白云母带,绿泥石-白云母带中的白云母SWIR Al-OH 2200 nm吸收峰波长高于石英-白云母带;斑岩向浅成低温过渡铜金矿体发育硬水铝石-叶蜡石带;高硫型浅成低温铜金矿体发育高级泥化蚀变,由内向外可划分为石英-明矾石带、地开石-高岭石带和蒙脱石带.Čukaru Peki铜金矿床的金属硫化物组合具有明显的分带特征,斑岩铜金矿体由下至上表现为:黄铜矿+斑铜矿→黄铁矿+黄铜矿+(磁铁矿±赤铁矿);过渡铜金矿体主要为:砷黝铜矿+(斑铜矿+黄铜矿+蓝辉铜矿+铜蓝)组合;高硫铜金矿体为硫砷铜矿+铜蓝组合.总体上,矿床下部为Cu-Fe-S体系,中部贯穿Cu-As-Sb-S体系,向上转变为Cu-S体系.硫化物组合从深部早阶段的高温低硫化态转为中浅部晚阶段的低温高硫化态.结合化探分析资料,建立热液蚀变和硫化物分带模型,推测Čukaru Peki铜金矿床北西部存在很大的找矿潜力.Čukaru Peki铜金矿床的研究可以为我国紫金山金铜矿床深边部增储、冈底斯成矿带寻找晚白垩世斑岩-浅成低温热液铜金矿床提供一定参考.
Keyword ：
Čukaru Peki铜金矿床 Čukaru Peki铜金矿床 Timok矿集区 Timok矿集区 斑岩型矿床 斑岩型矿床 热液蚀变 热液蚀变 硫化物组合 硫化物组合 高硫型浅成低温热液矿床 高硫型浅成低温热液矿床
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| GB/T 7714 | 单思齐 , 谢桂青 , 刘文元 et al. 特提斯西段塞尔维亚Čukaru Peki超大型斑岩-浅成低温型铜金矿床的热液蚀变和硫化物分带特征及其找矿方向 [J]. | 大地构造与成矿学 , 2023 , 47 (5) : 1085-1109 . |
| MLA | 单思齐 et al. "特提斯西段塞尔维亚Čukaru Peki超大型斑岩-浅成低温型铜金矿床的热液蚀变和硫化物分带特征及其找矿方向" . | 大地构造与成矿学 47 . 5 (2023) : 1085-1109 . |
| APA | 单思齐 , 谢桂青 , 刘文元 , 郑佳浩 , 邢波 . 特提斯西段塞尔维亚Čukaru Peki超大型斑岩-浅成低温型铜金矿床的热液蚀变和硫化物分带特征及其找矿方向 . | 大地构造与成矿学 , 2023 , 47 (5) , 1085-1109 . |
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丁家山铅锌矿床位于闽中梅仙矿集区西南部,矿体多呈层状、似层状和透镜状,产于中—新元古界马面山群龙北溪组的绿片岩和大理岩中.为查明该矿床的成矿时代,对该矿床中的主要矿石矿物闪锌矿开展了Rb-Sr同位素测年.8件闪锌矿样品构成的等时线年龄为143.1±3.2 Ma(MSWD=1.7),表明该矿床形成于燕山中期晚侏罗世.闪锌矿的锶同位素(初始比值为0.71434±0.00036)及前人的硫、铅同位素研究成果共同指示,丁家山矿床的成矿物质可能主要来源于下地壳的深源岩浆.综合分析认为,丁家山矿床形成于古太平洋板块向欧亚大陆板块俯冲-消减后的伸展引张环境背景下,是晚侏罗世到早白垩世期间的花岗岩体与中—新元古界的大理岩经接触交代后的矽卡岩型矿床.作为梅仙矿集区的典型铅锌矿床,丁家山矿床的成矿时代对区内其他铅锌矿床的成矿时代具有一定约束意义.
Keyword ：
Rb-Sr同位素 Rb-Sr同位素 丁家山铅锌矿床 丁家山铅锌矿床 成矿时代 成矿时代 梅仙矿集区 梅仙矿集区 闽中地区 闽中地区
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| GB/T 7714 | 肖晓牛 , 邢波 , 余新明 et al. 闽中梅仙矿集区丁家山铅锌矿床成矿时代厘定及成矿物质来源:来自闪锌矿Rb-Sr同位素的证据 [J]. | 地质通报 , 2022 , 41 (11) : 2026-2034 . |
| MLA | 肖晓牛 et al. "闽中梅仙矿集区丁家山铅锌矿床成矿时代厘定及成矿物质来源:来自闪锌矿Rb-Sr同位素的证据" . | 地质通报 41 . 11 (2022) : 2026-2034 . |
| APA | 肖晓牛 , 邢波 , 余新明 , 葛明慧 , 秦新龙 , 刘荣芳 et al. 闽中梅仙矿集区丁家山铅锌矿床成矿时代厘定及成矿物质来源:来自闪锌矿Rb-Sr同位素的证据 . | 地质通报 , 2022 , 41 (11) , 2026-2034 . |
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Abstract ：
福建泰宁李家坊金矿床位于武夷成矿带中段,为闽西北何宝山矿田内新发现的一个中型金矿床(Au储量>5t,平均品位12.22g/t),至今成因类型不明。磁铁矿是该矿床中常见的氧化物。本文在野外地质的基础上,依据磁铁矿的结构和矿物共生组合,将其分为四种类型(Mt1a、Mt1b、Mt2和Mt3)。其中,Mt1a呈板柱状,与绿泥石共生;Mt1b呈自形-半自形粒状,与绿泥石-赤铁矿共生;Mt2呈自形粒状,与绿泥石-绿帘石共生;Mt3呈半自形-它形粒状,与绿帘石-赤铁矿共生。金主要以自然金和银金矿的形式赋存于Mt3中。原位微区分析结果表明,李家坊金矿不同类型磁铁矿均含有较低含量的Ti(0.91×10-6～106.52×10-6)、Al(175.26×10-6～10760.03×10-6)和高场强元素(如:Sc、U、Pb等),表明属于热液型磁铁矿。此外,从Mt1a型到Mt3型磁铁矿,Ti含量呈逐渐降低的趋势,指示热液流体逐渐向低温条件演化。V含量表现出先降低后升高再降低的变化规律,暗示热液流体的氧逸度有明显波动,但总体呈升高趋势。磁铁矿的显微结构和化学组成具矽卡岩型矿化特征,可用于提供矿床成因类型的证据。其中,Mt3型磁铁矿与Au矿化密切相关,可用于指示金矿形成的过程。
Keyword ：
李家坊 李家坊 磁铁矿 磁铁矿 金矿化 金矿化 金矿床 金矿床
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| GB/T 7714 | 陈娟 , 刘文元 , 邢波 . 福建李家坊金矿床磁铁矿的成因及其对金矿化过程的指示 [C] //2022年中国地球科学联合学术年会论文集——专题七十一：矿物科学与工程、专题七十二：高压实验矿物学、岩石学与地球化学 . 2022 . |
| MLA | 陈娟 et al. "福建李家坊金矿床磁铁矿的成因及其对金矿化过程的指示" 2022年中国地球科学联合学术年会论文集——专题七十一：矿物科学与工程、专题七十二：高压实验矿物学、岩石学与地球化学 . (2022) . |
| APA | 陈娟 , 刘文元 , 邢波 . 福建李家坊金矿床磁铁矿的成因及其对金矿化过程的指示 2022年中国地球科学联合学术年会论文集——专题七十一：矿物科学与工程、专题七十二：高压实验矿物学、岩石学与地球化学 . (2022) . |
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