Genesis of the superlarge Luziyuan Zn-Pb-Fe(-Cu) distal skarn deposit in western Yunnan (SW China): Insights from ore geology and C-H-O-S isotopes
Genesis of the superlarge Luziyuan Zn-Pb-Fe(-Cu) distal skarn deposit in western Yunnan (SW China): Insights from ore geology and C-H-O-S isotopes
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滇西超大型芦子园锌铅铁(-铜)远缘矽卡岩矿床成因：矿石地质和C-H-O-S同位素的见解
DOI：
10.1016/j.oregeorev.2019.03.015
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发表时间：
2019-04
影响因子：
3.3
通讯作者：
Haijun Yu
中科院分区：
文献类型：
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作者：
Rong Xu;Wenchang Li;Mingguo Deng;Jiaxi Zhou;Tao Ren;Haijun Yu
芦子园超大型锌-铅-铁（-铜）多金属存款矿床位于滇西保山地块南部。该存款包含超过420万吨（Mt）的Zn + Pb金属储量，其中Zn和Pb分别为5.09%和2.40%，以及3.01亿吨铁矿石资源，TFe为30.02%。层状或脉状矿体产于上寒武统沙河厂组中。与世界上许多主要的锌矽卡岩矿床相似，芦子园存款矿床随深度显示出明显的金属分带模式，这与不同的钙硅酸盐矿物组合有关：关于Zn-Pb（闪锌矿+方铅矿）矿石在大理石，通过锌铅铁铜辉石型（闪锌矿+方铅矿+磁铁矿±黄铁矿+黄铜矿）矿石（±单斜辉石）夕卡岩中的铁铜（磁铁矿±黄铁矿+黄铜矿）矿石，以及石榴子石（±单斜辉石±辉石）夕卡岩中的铁铜矿石。同矿方解石的δ 13 CPDB和δ 18 OSMOW值分别为−1.0至+0.9‰和+10.3至+12.7‰，表明与花岗岩和大理石的同位素亲和力。成矿前蔷薇辉石和同矿石英中流体包裹体的δ DH 2 O值分别为−81.7 ‰ ~ −68.8‰和−76.6 ‰ ~ −56.3‰，而蔷薇辉石、同矿方解石和石英的δ 18 OH 2 O值分别为+5.4 ‰ ~+6.1‰、+1.4 ‰ ~+3.8‰和−5.3 ‰ ~ −2.0‰。这表明成矿流体既有岩浆来源，也有大气沃茨来源。同矿硫化物的δ 34 S值（+8.9 ~+12.0‰）略高于典型壳源花岗岩的δ 34 S值（-4.0 ~+9.0‰），但明显低于寒武纪海水硫酸盐的δ 34 S值。这表明S的来源与花岗岩和海水硫酸盐有关。作者认为，芦子园锌铅铁（铜）多金属矿产于远源夕卡岩体系中，与早白垩世隐伏花岗岩侵入体有成因联系。
The superlarge Luziyuan Zn-Pb-Fe(-Cu) polymetallic deposit is located in the southern Baoshan Block of western Yunnan (SW China). The deposit contains over 4.2 million tonnes (Mt) of contained Zn + Pb metal reserves at 5.09% Zn and 2.40% Pb, and 301 Mt of Fe ore resources at 30.02% TFe. The stratiform or vein-type orebodies are hosted in the Upper Cambrian Shahechang Formation. Similar to many major Zn skarn deposits worldwide, the Luziyuan deposit shows a distinct metal zonation pattern with depth, which correlates with the different calc-silicate mineral assemblages: From Zn-Pb (sphalerite + galena) ores in marble, through Zn-Pb-Fe-Cu (sphalerite + galena + magnetite ± pyrite + chalcopyrite) ores in pyroxenoid (± clinopyroxene)-bearing skarn, to Fe-Cu (magnetite ± pyrite + chalcopyrite) ores in garnet (± clinopyroxene ± pyroxenoid)-bearing skarn. The syn-ore calcite has δ13CPDBand δ18OSMOWvalues of −1.0 to +0.9‰ and +10.3 to +12.7‰, respectively, suggestive of isotopic affinities to both granite and marble. δDH2Ovalues of the fluid inclusions in the pre-ore rhodonite and the syn-ore quartz range from −81.7 to −68.8‰ and −76.6 to −56.3‰, respectively; whilst the calculated δ18OH2Ovalues of the rhodonite, syn-ore calcite, and quartz are of +5.4 to +6.1‰, +1.4 to +3.8‰, and −5.3 to −2.0‰, respectively. This indicates that the ore-forming fluids were sourced from both magmatic and meteoric waters. δ34S values of the syn-ore sulfides (+8.9 to +12.0‰) are slightly higher than those of typical crustal-derived granites (δ34S = −4.0 to +9.0‰), but are significantly lower than those of Cambrian seawater sulfates. This indicates that the source of S is correlated with both granite and seawater sulfates. We propose that the Luziyuan Zn-Pb-Fe(-Cu) polymetallic mineralization occurred in a distal skarn system, and was genetically linked to concealed Early Cretaceous granite intrusions.
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影响因子：
3.3
作者：
Jiaxi Zhou;Zhilong Huang;Zhi-Cheng Lv;Xiangkun Zhu;JianGuo Gao;H. Mirnejad
通讯作者：
Jiaxi Zhou;Zhilong Huang;Zhi-Cheng Lv;Xiangkun Zhu;JianGuo Gao;H. Mirnejad
DOI：
10.1007/978-3-319-78527-1
发表时间：
1973
期刊：
Stable Isotope Geochemistry
影响因子：
--
作者：
J. Hoefs
通讯作者：
J. Hoefs
影响因子：
3.3
作者：
Yiming Zhao;Yongguan Dong;Daxin Li;Chengsi Bi
通讯作者：
Yiming Zhao;Yongguan Dong;Daxin Li;Chengsi Bi
影响因子：
3.3
作者：
Z. Hou;K. Zaw;G. Pan;X. Mo;Qiang Xu;Yunzhong Hu;Xingzhen Li
通讯作者：
Z. Hou;K. Zaw;G. Pan;X. Mo;Qiang Xu;Yunzhong Hu;Xingzhen Li
滇西保山地块始新世双麦地过铝质花岗岩的锆石SHRIMP U-Pb年代学、地球化学及岩石成因
DOI：
10.1007/s11430-011-4200-7
发表时间：
2011-05
期刊：
Science China Earth Sciences
影响因子：
--
作者：
Huang JingNing;Chen YongQing;Zhai XiaoMing;Lu YingXiang;Xie YongFu;Cheng ZhiZhong
通讯作者：
Cheng ZhiZhong