Distal Pb-Zn-Ag veins associated with the world-class Donggou porphyry Mo deposit, southern North China craton
Distal Pb-Zn-Ag veins associated with the world-class Donggou porphyry Mo deposit, southern North China craton
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华北克拉通南部世界级东沟斑岩钼矿床伴生远端铅锌银矿脉
DOI：
10.1016/j.oregeorev.2016.12.001
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发表时间：
2017-04
影响因子：
3.3
通讯作者：
Selby David
中科院分区：
文献类型：
--
作者：
Li Zhan-Ke;Bi Shi-Jian;Li Jian-Wei;Zhang Wen;Cooke David R.;Selby David
华北克拉通南部拥有大量世界级的斑岩型钼、铅锌银矿脉矿床。铅锌银脉是否与斑岩钼系有遗传关系仍有争议。本文重点研究了三元沟铅锌银脉状矿床与世界级东沟斑岩钼矿床的成因关系，并从斑岩与脉状系统的时空关系探讨了华北克拉通南缘斑岩与脉状系统的时空关系。三源沟脉状硫化物矿化以黄铁矿、闪锌矿、方铅矿为主，另有黄铜矿、磁黄铁矿、斑铜矿、四面体矿、钴矿、多基矿、银辉矿等。成矿主体为石英闪长岩，锆石U-Pb年龄为1756±9 Ma。而铅锌银硫化物矿化蚀变带绢云母的40ar /39Ar平台年龄为115.9±0.9 Ma。虽然名义上更年轻，但绢云母40ar /39Ar年龄与附近东沟斑岩钼矿年龄相近（锆石U-Pb年龄为117.8±0.9 Ma，辉钼矿Re-Os年龄为117.5±0.8 Ma和116.4±0.6 Ma）。东沟黄铁矿Mo、Bi含量较高，而三源沟黄铁矿富集Cu、Zn、Pb、Ag、Au和As。这种微量元素模式与斑岩相关成矿系统中典型的金属分带一致。三源沟黄铁矿与东沟黄铁矿的铅同位素存在明显的重叠（206pb /204Pb为17.273 ~ 17.495 vs. 17.328 ~ 17.517, 207pb /204Pb为15.431 ~ 15.566 vs. 15.408 ~ 15.551, 208pb /204Pb为37.991 ~ 38.337 vs. 38.080 ~ 38.436）。综合地质、年代学和地球化学资料，支持三元沟铅锌银矿床岩浆热液成因，确认铅锌银脉体与东沟钼矿床形成与斑岩有关的岩浆热液体系。考虑到华北克拉通南部许多地区普遍存在铅锌银脉和钼矿化斑岩，本研究建立的模式对该地区进一步寻找钼和铅锌银资源具有重要意义。
The southern North China craton hosts numerous world-class porphyry Mo and Pb-Zn-Ag vein deposits. Whether or not the Pb-Zn-Ag veins are genetically associated with the porphyry Mo system remains contentious. Here we focus on the genetic relationships between the Sanyuangou Pb-Zn-Ag vein deposit and the world-class Donggou porphyry Mo deposit, and discuss the potential implications from the spatial and temporal relationships between porphyry and vein systems in the southern North China craton.At Sanyuangou, vein-hosted sulfide mineralization mainly comprises pyrite, sphalerite, and galena, with minor chalcopyrite, pyrrhotite, bornite, tetrahedrite, covellite, polybasite and argentite. The mineralization is hosted by a quartz diorite stock, which has a zircon U-Pb age of 1756 ± 9 Ma. However, sericite from alteration selvages of Pb-Zn-Ag sulfide mineralization yields a well-defined40Ar/39Ar plateau age of 115.9 ± 0.9 Ma. Although nominally younger, the sericite40Ar/39Ar age is similar to the age of the nearby Donggou porphyry Mo deposit (zircon U-Pb age of 117.8 ± 0.9; molybdenite Re-Os ages of 117.5 ± 0.8 Ma and 116.4 ± 0.6 Ma). Pyrite from Donggou has elevated contents of Mo and Bi, whereas pyrite from Sanyuangou is enriched in Cu, Zn, Pb, Ag, Au, and As. This trace element pattern is consistent with metal zonation typically observed in porphyry related metallogenic systems. Pyrite grains from Sanyuangou have lead isotopes overlapping those from Donggou (17.273–17.495 vs. 17.328–17.517 for206Pb/204Pb, 15.431–15.566 vs. 15.408–15.551 for207Pb/204Pb, and 37.991–38.337 vs. 38.080–38.436 for208Pb/204Pb). Collectively, the geological, geochronological, and geochemical data support a magmatic-hydrothermal origin for the Sanyuangou Pb-Zn-Ag deposit and confirm that the Pb-Zn-Ag veins and the Donggou Mo deposit form a porphyry-related magmatic-hydrothermal system.Given the widespread Pb-Zn-Ag veins and Mo mineralized porphyries in many districts of the southern North China craton, the model derived from this study has broad implications for further exploration of Mo and Pb-Zn-Ag resources in the area.
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DOI：
10.1086/378486
发表时间：
2003-11
期刊：
The Journal of Geology
影响因子：
--
作者：
Jian-wei Li;P. Vasconcelos;Jun Zhang;Mei‐Fu Zhou;Xiaojun Zhang;Feng-Hua Yang
通讯作者：
Jian-wei Li;P. Vasconcelos;Jun Zhang;Mei‐Fu Zhou;Xiaojun Zhang;Feng-Hua Yang
影响因子：
3.4
作者：
J. Woodhead
通讯作者：
J. Woodhead
影响因子：
5.8
作者：
R. Sillitoe
通讯作者：
R. Sillitoe
DOI：
10.4028/www.scientific.net/amr.535-537.1035
发表时间：
2012-06
期刊：
Advanced Materials Research
影响因子：
--
作者：
Jun Li;Yong Li;K. Xie
通讯作者：
Jun Li;Yong Li;K. Xie
影响因子：
5.3
作者：
STEIGER, RH;JAGER, E
通讯作者：
JAGER, E