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  • CN 62-1112/TF 
  • ISSN 1005-2518 
  • 创刊于1988年
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矿产勘查与资源评价

甘肃加甘滩金矿床金的赋存状态研究

  • 田向盛 ,
  • 第鹏飞 ,
  • 刘东晓 ,
  • 王建飞 ,
  • 何广武
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  • 1.甘肃省地矿局第三地质矿产勘查院,甘肃  兰州   730050;
    2.兰州大学地质科学与矿产资源学院,甘肃省西部矿产资源重点实验室,甘肃  兰州   730000;
    3.甘肃省矿产资源储量评审中心,甘肃  兰州   730000
田向盛(1984-),男,甘肃白银人,工程师,从事固体矿产地质勘查工作。274867816@qq.com

收稿日期: 2016-04-17

  修回日期: 2016-05-10

  网络出版日期: 2016-10-08

Study on the Occurrence of Native Gold in the Jiagantan Gold Deposit,Gansu Province

  • TIAN Xiangsheng ,
  • DI Pengfei ,
  • LIU Dongxiao ,
  • WANG Jianfei ,
  • HE Guangwu
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  • 1.Third Institute of Geology and Mineral Resources Survey,Gansu Bureau of Geology and Mineral Resources,Lanzhou   730050,Gansu,China;
    2.School of Geological Sciences and Mineral Resources of Lanzhou University,The West Key Laboratory of Mineral Resource in Gansu Province,Lanzhou   730000,Gansu,China;
    3.Gansu Assessment Center of Mineral Resources Reserves,Lanzhou   730000,Gansu,China

Received date: 2016-04-17

  Revised date: 2016-05-10

  Online published: 2016-10-08

摘要

位于西秦岭夏河—合作断裂带南侧的加甘滩金矿床是近年来新发现的一个超大型金矿床。为了确定金的载金矿物及其赋存形式,利用显微测试技术对金的赋存状态进行了研究,通过高倍光学显微镜和扫描电子显微镜对原生矿石样品进行了详细观察,确定原生浸染状矿石中的金属矿物主要为含砷黄铁矿和毒砂,但在扫描电子显微镜背散射(BSE)图像观察中均未发现自然金包裹体,故确定金在载金矿物中的赋存形式为次显微不可见金。

本文引用格式

田向盛 , 第鹏飞 , 刘东晓 , 王建飞 , 何广武 . 甘肃加甘滩金矿床金的赋存状态研究[J]. 黄金科学技术, 2016 , 24(3) : 40 -51 . DOI: 10.11872/j.issn.1005-2518.2016.03.040

Abstract

Jiagantan gold deposit is a super-large gold deposit newly discovered in recent years,which is located at the south of Xiahe-Hezuo fault zone of West Qinling.The occurrence state of gold were studied by microscopic test technology,the primary ore samples were observed in detail by high power optical microscope and scanning electron microscope(SEM).It is concluded that the metallic minerals in primary disseminated ore are mainly arsenic pyrite and arsenopyrite,and the natural gold inclusions couldn’t be found in observing the BSE images.So the conclusion is that the microscopric invisible gold is occurrence state of gold in gold bearing minerals.

参考文献

[1] Wells J D,Mullenens T E.Gold-bearing arsenian prite determined by micorprobe analysis,Cortez and Carlin gold mines[J].Economic Geology,1973,68:187-201.
[2] Radtke A S,Heropoulos C,Fabbi B P,et al.Data on major and minor elements in host rocks and ores,Carlin gold deposite[J].Economic Geology,1972,67:975-978.
[3] Hausen D M.Particulate gold occurrences in Hagn[J].South Africa,1975(8):1253-1258.
[4] Bakken B M,Hochella Jr M F,Marshall A F,et al.High-resolution microscopy of gold in unoxidized ore from the Carlin mine[J].Economic Geology,1989,84(1):171-179.
[5] 张江苏,袁秀茹.甘肃省夏河县加甘滩金矿床地质特征及找矿前景分析[J].甘肃科技,2007,23(8):69-71.
[6] 田向盛,王建飞,赵志成,等.甘肃加甘滩金矿床地质特征及找矿标志[J].甘肃地质,2016,25(1):25-31.
[7] 代文军,史文全,李鸿睿,等.加甘滩金矿床地质特征及矿床成因初探[J].黄金地质,2016,37(1):18-22.
[8] 冯益民,曹宣择,张二朋,等.西秦岭造山带的演化、构造格局和性质[J].西北地质,2003,36(1):1-10.
[9] 姜春发,王宗起,李锦铁.中央造山带开合构造[M].北京:地质出版社,2000:1-153.
[10] 李春昱.中国板块构造的轮廊[J].中国地质科学院院报,1980,2(1):11-22.
[11] 张国伟,孟庆任,于在平,等.秦岭造山带的造山过程及其动力学特征[J].中国科学(D辑),1996,26(3):193-200.
[12] Annels A E,Roberts D E.Turbidite-hosted  gold  mineralization at the Dolaucothi gold mines,Dyfed,Wales,United Kingdom[J].Economic Geology,1989,84(5):1293-1314.
[13] 潘桂棠,肖庆辉,陆松年,等.中国大地构造单元划分[J].中国地质,2009,26(1):1-4.
[14] 王宗起,闫全人,闫臻,等.秦岭造山带主要大地构造单元的新划分[J].地质学报,2009,11:1527-1546.
[15] 刘春先,李亮,隋吉祥.甘肃枣子沟金矿的矿化特征及矿床成因[J].地质科技情报,2011,30:66-74.
[16] 柳生祥,陈耀宇,刘强,等.甘肃夏河—合作金矿密集区控矿因素及资源潜力分析[J].矿床地质,2012,31:757-758.
[17] Seward T M.Thio complexes of gold and the transport ofgold In hydrothermal ore solutions[J].Geochimicate Gosmochimica Acta,1973,37(3):379-399.
[18] Fleet M E,Maclean P J,Barbier J.Oscillatory-ZonedAs-bearing pyrite from strata-bound and strati-form golddeposits:An indicator of ore fluid evolution[J].Economic Geology Monographs,1989,6:356-362.
[19] Cook N J,Chryssoulis S L.Concentrations of invisible gold in the common sulfides[J].The Canadian Mineralogist,1990,28(1):1-16.
[20] Fleet M E,Chryssoulis S L,Maclean P J,et al.Aresnian pyrite from gold deposits:Au and As distribution investigated by SIMS and EMP and color staining and surface oxidation by XPS and LIMS[J].The Canadian Mineralogist,1993,31:1-17.
[21] Arehart G B,Chryssoulis S L,Kesler S E.Gold and arsenic in iron sulfides from sediment-hosted disseminated gold deposits:Implications for depositional processes[J].Economic Geology,1993,88:171-185.
[22] Friedl J,Wagner F E,Wang N.On the chemical state of combined gold in sulfidic ores:Conclusions from Mossbauer source experiments[J].Neues Jahrbuch for Mineralogie-Abhandlungen,1995,169:279-290.
[23] Simon G,Kesler S E,Chryssoulis S L.Geochemistry and textures of gold-bearing arsenian pyrite,Twin Creeks,Nevada:Implication for deposition of gold in Carlin-type desposits[J].Economic Geology,1999,94:405-421.
[24] Savage K S,Tingle T N,O’Day P A,et al.Aresnic speciation in pyrite and secondary weathering phases,Mother Lode gold district,Tuolumne County,California[J].Applied Geochemistry,2000,15(8):1219-1244.
[25] Cline J S.Timing of gold and arsenic sulfide mineralde position at the Gethell Carlin-type gold desposit,north-central Nevada[J].Economic Geology,2001,96:75-89.
[26] Emosbo P,Hofstra A H,Lauha E A,et al.Origin of highgrade gold ore,source of ore fluid components and genesis of the Meikle and neighboring Carlin-type desposits,northern Carlin Trend,Nevada[J].Economic Geology,2003,98:1069-1105.
[27] Palenik C S,Utsunomiya S,Reich M,et al.“Invisible”gold nanoparticles in a Carlin-type desposit[J].American Mireralogist,2004,89(10):1359-1366.
[28] Reich M,Kealer S E,Utsunomiya S,et al. Solubility of gold in aesenic pyrite[J].Geochemica et Cosmochimia Acta,2005,53:255-267.
[29] Simon G,Huang H,Penner-Hahn J E,et al.Oxidation state of gold and arsenic in gold-bearing arsenian pyrite[J].American Mireralogist,1999,84(7/8):1071-1079.
[30] 华曙光,王力娟,贾晓芳,等.陕西镇安丘岭卡林型金矿金的赋存状态和富集机理[J].地球科学—中国地质大学学报,2012,37(5):989-1002.

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