Study on the Mineral Electron Microprobe Evidence of the Formation  Conditions and Fission Track of Gold Deposits in Ganzi-Litang Gold  Belt, Western Sichuan Province

Abstract

Abstract:

Ganzi-Litang gold belt is located in the Eastern Qinghai-Tibet Plateau, the junction area of Songpan-Ganzi orogenic zones and Yidun arc orogen. The authors attempt to explore the ore-formating temperature, depth and environments of the five gold deposits, i.e. Gala gold ore district, Cuo-a gold ore district, Xionglongxi gold ore district, Ajialongwa gold ore district and Qukailongwa gold ore district, using electron microprobe analysis of the main goldbearing minerals of pyrite and arsenopyrite. The mineralizing age is discussed based on the fission track age of zircon in the ore. The pyrites are characteried by lossing sulfur content and generally containing cobalt and nickel，in which the content of cobalt is from 0.04% to 1.73%, and that of nickel is from 0.01% to 2.97%. The mean content of cobalt is 0.43%, and the composition ratios of Co/Ni range from 0.08 to 10.04 with an average of 2.28. The pyrites have the composition ratios of Fe/(S+As) between 0.841 and 0.907, averaging 0.875. Arsenopyrite belongs to arsenicrich sulfur type, the ratio of Fe/(As+S) is from 0.49 to 0.57 while that of As/S is from 0.73 to 0.87.Therefore, we consider that the gold deposits formed in the condition of higher oxygen fugacity, middle-shallow depths and middle-low temperature hydrotherm of 165-250℃. They are the epithermal gold deposits, and the mineralizing age of gold is between 82 and 140 Ma with a multi-stage characteristics, and the oremineralization was closely related to the alkaline magmatic hydrotherm in Yanshanian Period.

Key words: electron microprobe analysis, fission track, epithermal gold deposit, GanziLitang gold belt, Tibet Plateau

CLC Number:

P618.51
P599

HUAN WEI Jing,YUAN Wango-Ming,LI Na. Study on the Mineral Electron Microprobe Evidence of the Formation Conditions and Fission Track of Gold Deposits in Ganzi-Litang Gold Belt, Western Sichuan Province[J]. Geoscience, 2011, 25(2): 261-270.

References

[1]张能德，曹亚文，廖远安，等. 四川甘孜—理塘裂谷带地质与成矿
[M]. 北京：地质出版社，1998：60-87.

[2]朱华平. 四川阿加隆洼金矿床的地质特征及矿床成因
[J]. 黄金地质，2007，28(6)：18-20.

[3]邹光富. 甘孜—理塘断裂带北段构造特征及其演化过程
[J].四川地质学报, 1993，13(3)：193-200.

[4]尹显科. 甘孜—理塘断裂带北段主要金矿类型及地质特征
[J]. 四川地质学报，1995，15 (3)：195-203.

[5]闫建梅，林高源，廖怀清. 四川德格错阿金矿特征与矿床成因初析
[J]. 四川地质学报，2008，28(3)：208-210.

[6]付小方，应汉龙. 甘孜—理塘断裂带北段新生代构造特征及金矿成矿作用
[J]. 中国地质，2003， 30(4)：413-418.

[7]邓军，杨立强，葛良胜，等.滇西富碱斑岩型金成矿系统特征与变化保存
[J]. 岩石学报，2010，26(6)：1633-1645.

[8]邓军, 侯增谦, 莫宣学, 等. 三江特提斯复合造山与成矿作用
[J]. 矿床地质, 2010, 29(1): 37-42.

[9]邹光富. 甘孜—理塘板块缝合带研究的新进展
[J]. 四川地质学报，1995，15(4)：257-263.

[10]郭晓东，牛翠祎，赵玉锁，等. 甘孜—木里成矿带金成矿特征及找矿方向
[J]. 黄金科学技术，2009，17(4): 1-9.

[11]夏廷高, 孙传敏,李亮, 等. 四川阿加隆洼金矿地质特征与找矿标志
[J]. 地质与勘探, 2006, 42(3): 53-55.

[12]邓军，徐守礼，吕古贤，等. 胶东西北部断裂构造与成矿作用研究
[J]. 现代地质，1996，10(4)：502-511.

[13]邓军，杨立强，孙忠实，等. 剪切带构造成矿动力机制与模式
[J]. 现代地质，1999，13(2)：125-129.

[14]翟裕生，王建平，邓军，等. 成矿系统时空演化及其找矿意义
[J]. 现代地质，2008，22(2)：143-150.

[15]Deng J, Wang Q F, Yang L Q, et al. Reconstruction of orecontrolling structures resulting from magmatic intrusion into the Tongling ore cluster area during the Yanshanian Epoch
[J]. Acta Geologica Sinica , 2007, 81 (2)：287-296.

[16]赵嘉农，任富根，丁士应，等. 河南元古宙爆破角砾岩型店坊金矿的黄铁矿特征及其生成条件
[J].前寒武纪研究进展，1998，21(4)：47-55.

[17]李胜荣，陈光远，邵伟，等. 胶东乳山金青顶金矿区黄铁矿化学成分研究
[J]. 黄金科学技术，1994，2(6)：7-12.

[18]陈光远，孙岱生，黄绍峰.成因矿物学与找矿矿物学
[M].武汉：中国地质大学出版社,1987：1-882.

[19]卿敏，韩先菊.金矿床主要矿物标型特征研究综述
[J].黄金地质，2003，9(4)：39-45.

[20]梅建明. 浙江遂昌治岭头金矿床黄铁矿的化学成分标型研究
[J]. 现代地质，2000,14(1)：51-55.

[21]孟繁聪，孙岱生，李胜荣. 烟台南张家金矿毒砂的标型特征
[J]. 有色金属矿产与勘查, 1999，8(2)：113-117.

[22]鲍振襄，万榕江，包觉敏. 金矿床中毒砂标型特征及金的赋存状态
[J].云南地质，2005，24(1):32-48.

[23]南京大学地质学系岩矿教研室. 结晶学与矿物学
[M]. 北京：地质出版社, 1978：334-338.

[24]周学武，李胜荣，鲁力，等. 辽宁丹东五龙矿区石英脉型金矿床的黄铁矿标型特征研究
[J].现代地质，2005，19(2)：231-238.

[25]薛君治，陆正敏，张汉凯.内蒙古白乃庙金矿矿物学找矿标志
[M]. 北京：地质出版社，1990：89-94.

[26]李红兵，曾凡治.金矿中的黄铁矿标型特征
[J].地质找矿论丛，2005，20(3)：199-203.

[27]陈武，季寿元. 矿物学导论
[M]. 北京：地质出版社，1985：112-117.

[28]Deng J, Wang Q F, Huang D H, et al. Transport network and flow mechanism of shallow orebearing magma in Tongling ore cluster area
[J]. Science in China Series D, 2006, 49(4): 397-407.

[29]Deng J, Yang L Q, Gao B F, et al. Fluid evolution and metallogenic dynamics during tectonic regime transition: An example from the Jiapigou gold belt in northeast China
[J]. Resource Geology, 2009, 59 (2): 140-153.

[30]胡健民，孟庆任，石玉若, 等. 松潘—甘孜地体内花岗岩锆石SHRIMP U-Pb定年及其构造意义
[J]．岩石学报，2005，21(3)：867-880.

[31]袁万明，莫宣学，喻学惠，等. 东昆仑印支期区域构造背景的花岗岩记录
[J]. 地质论评，2000，46(2)：203-211.

[32]袁万明，莫宣学，王世成，等. 东昆仑金成矿作用与区域构造演化的关系
[J]. 地质与勘探，2003，39(3)：5-8.

[33]Harrison T M. Diffusion of 40Ar in hornblende
[J]. Contributions of Mineralogy and Petrology, 1981, 78 : 324-331.

[34]Berger G W, York D. Geothermometry from 40Ar/ 39 Ar dating experiments
[J]. Geochemicaet Cosmochemica Acta, 1981, 45: 795-811.

[35]Yamada R, Tagami T, Nishimura S, et al. Annealing kinetics of fission tracks in zircon:An experimental study
[J]. Chemical Geology(Isotope GeoscienceSection), 1995, 122: 249-258

Study on the Mineral Electron Microprobe Evidence of the Formation Conditions and Fission Track of Gold Deposits in Ganzi-Litang Gold Belt, Western Sichuan Province

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