三道湾子金矿床是一个与偏碱性岩有关的含碲化物低硫化浅成低温热液矿床.矿体赋存于侏罗系上统塔木兰沟组中基性、偏碱性粗安岩、粗安质火山角砾岩中.矿石类型主要为贫硫石英脉型,矿石矿物主要由碲金矿、碲金银矿、碲银矿、针碲金银矿和斜方碲金矿等组成.矿区内发育硅化、黄铁矿化、绢云母化、高岭石化、绿泥石化、碳酸盐化和萤石化等矿化蚀变,典型的低硫化型浅成低温热液蚀变组合.流体包裹体的研究表明:石英中主要发育气液二相及少量单液相包裹体,成矿流体属H2O - NaCl体系；包裹体均一温度集中在230 ～270℃；盐度大多小于3％,密度集中在0.68～0.88g/cm3,成矿流体属中低温、低盐度、低密度的体系；成矿深度平均为1.73 km,属浅成低温环境；氢、氧同位素分析表明成矿流体δD为- 110‰～- 85‰,平均-95.8‰,δ18O水为-14.3‰～-8.7‰,均值为-11.1‰,表明成矿流体主要来自大气降水.根据矿床低硫富碲特点、矿物组合、矿化蚀变组合及流体特征,进一步确定三道湾子金矿床为与偏碱性岩有关的含碲化物低硫化浅成低温热液型金矿床.
参考文献
| [1] | 武子玉,王洪波,徐东海,周永昶.黑龙江黑河三道湾子金矿床地质地球化学研究[J].地质论评,2005(03):264-267. |
| [2] | 吕军,王建民,岳帮江,王洪波,于荣文,赵立国.三道湾子金矿床流体包裹体及稳定同位素地球化学特征[J].地质与勘探,2005(03):33-37. |
| [3] | 陈美勇,刘俊来,胡建江,邹运鑫,张宏远.大兴安岭北段三道湾子碲化物型金矿床的发现及意义[J].地质通报,2008(04):584-587. |
| [4] | Potter R W;Clynne M A;Brown D L .Freezing point depression of aqueous sodium chloride solutions[J].Economic Geology,1978,73:284-285. |
| [5] | Podnor R J .Revised equation and table for determining the freezing point depression of H2O-NaCl solution[J].Geochimica et Cosmochimica Acta,1993,57:683-684. |
| [6] | 刘斌;朱思林;沈昆.流体包裹体热力学参数计算软件及算例[M].北京:地质出版社,2000:7-9. |
| [7] | 邵洁连.金矿找矿矿物学[M].武汉:中国地质大学出版社,1988:38-45. |
| [8] | Sibson R H;Robert F;Poulsen K H .High-angle reverse faults,fluidpressure cycling and mesothermal gold-quartz deposits[J].Geology,1998,16:551-555. |
| [9] | 孙丰月;金巍;李碧乐 等.关于脉状热液金矿床成矿深度的思考[J].长春科技大学学报,2000,30(增刊1):27-30. |
| [10] | 张招崇;李兆鼐 .一个值得重视的金矿类型--碲化物型[J].贵金属地质,1994,3(01):59-64. |
| [11] | Taylor H P .The application of oxygen and hydrogen isotope studies to problems of hydrothermal alteration and ore deposition[J].Economic Geology,1974,69:843-883. |
| [12] | D. W. Pals;P. G. Spry .Telluride mineralogy of the low-sulfidation epithermal Emperor gold deposit, Vatukoula, Fiji[J].Mineralogy and Petrology,2003(3/4):285-307. |
| [13] | Boyle R W;马万钧;王立文;罗永国.金的地球化学与金矿床[M].北京:地质出版社,1984:26-35. |
| [14] | 涂光炽.初论碲的成矿问题[J].矿物岩石地球化学通报,2000(04):211-214. |
| [15] | Hedenquist J W;Arribas R A;Gonzalezue .Exploration for epithermal gold deposits[J].Reviews in Economic Geology,2000,13:245-277. |
| [16] | Sillitoe R H .Characteristics and controls of the largest porphyry copper-gold and epithermal gold deposits in the circum-Pacific region[J].Australian Journal of Earth Sciences,1997,44:373-388. |
| [17] | 杨铁铮 .小兴安岭地区东安金矿区火山岩及其与金矿关系研究[D].北京:中国地质大学(北京),2008. |
| [18] | 刘宝山,吕军.黑河市三道湾子金矿床地质、地球化学和成因探讨[J].大地构造与成矿学,2006(04):481-485. |
| [19] | DAVID R. COOKE;D. C. MCPHAIL .Epithermal Au-Ag-Te Mineralization, Acupan, Baguio District, Philippines: Numerical Simulations of Mineral Deposition[J].Economic geology and the bulletin of the Society of Economic Geologists,2001(1):109-131. |
| [20] | Scottam;Watanabe Y ."Extreme boiling" model for variablesalinity of the Hokko low-sulfidation epithermal Au prospect,southwestern Hokkaido,Japan[J].Mineral Deposits,1998,33(06):568-578. |
| [21] | Cooke D R;Simmons S F .Characteristics and genesis of epithermal gold deposits[J].Reviews in Economic Geology,2000,13:221-244. |
| [22] | Spycher N F;Reed M H .Evolution of a Broadlands-Type epithermal ore fluid along alternative P-T paths:implications for the transport and deposition of base,precious,and volatile metals[J].Economic Geology,1989,84:328-359. |
| [23] | 张德会 .流体的沸腾和混合在热液成矿中的意义[J].地球科学进展,1997,12(06):546-542. |
| [24] | 张志华 .黑龙江三道湾子金矿矿床地质特征及成矿模式研究[D].长春:占林大学,2009. |
| [25] | 林强,葛文春,曹林,孙德有,林经国.大兴安岭中生代双峰式火山岩的地球化学特征[J].地球化学,2003(03):208-222. |
| [26] | 高晓峰,郭锋,范蔚茗,李超文,李晓勇.南兴安岭晚中生代中酸性火山岩的岩石成因[J].岩石学报,2005(03):737-748. |
| [27] | 祝洪臣,张炯飞,权恒.大兴安岭中生代两期成岩成矿作用的元素、同位素特征及其形成环境[J].吉林大学学报（地球科学版）,2005(04):436-442. |
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