重庆南武矿区煤中镓赋存规律及控制因素
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摘要
上二叠统龙潭组是重庆南武矿区的主要含煤岩系,通过采集主采煤层C_(25)样品,运用ICP-MS(稀土元素)、电子显微镜,X射线衍射等方法对重庆南武矿区龙潭组煤的元素地球化学特征进行研究。研究发现,南武矿区晚二叠世龙潭组C_(25)煤中Ga元素富集,平面上呈现东北高、西北低的分布规律,矿区东北部天宝煤矿和开发煤矿达到综合利用品位。统计分析表明,C_(25)煤中Ga主要以无机态赋存于黏土矿物或硅酸铝盐矿物中。初步分析认为,南武矿区上二叠统龙潭组煤中Ga元素的富集主要受物源、沉积环境及构造热演化的控制。
The Upper Permian Longtan Formation is the main coal-bearing rock series in Nanwu mining area of Chongqing. Based on the survey and sampling, ICP-MS(rare earth element), electron microscope and X-ray diffraction, the elemental geochemical characteristics were studied. It is found that the element Ga in seam C_(25) of Late Permian Longtan Formation in Nanwu mining area is enriched, showing the variation pattern of being high in the northeast and low in the northwest in the plane. In Tianbao coal mine in the northeast of the mining area, the coal mine has reached comprehensive utilization grade, the value of comprehensive utilization of metallic elements deserves attention. SPSS statistical analysis showed that Ga in C_(25) exists mainly in the inorganic state in clay minerals or aluminum silicate minerals. The preliminary analysis shows that the Ga accumulation in the Late Permian Longtan Formation in Nanwu mining area is controlled mainly by provenance, sedimentary environment and tectonic thermal evolution.
The Upper Permian Longtan Formation is the main coal-bearing rock series in Nanwu mining area of Chongqing. Based on the survey and sampling, ICP-MS(rare earth element), electron microscope and X-ray diffraction, the elemental geochemical characteristics were studied. It is found that the element Ga in seam C_(25) of Late Permian Longtan Formation in Nanwu mining area is enriched, showing the variation pattern of being high in the northeast and low in the northwest in the plane. In Tianbao coal mine in the northeast of the mining area, the coal mine has reached comprehensive utilization grade, the value of comprehensive utilization of metallic elements deserves attention. SPSS statistical analysis showed that Ga in C_(25) exists mainly in the inorganic state in clay minerals or aluminum silicate minerals. The preliminary analysis shows that the Ga accumulation in the Late Permian Longtan Formation in Nanwu mining area is controlled mainly by provenance, sedimentary environment and tectonic thermal evolution.
引文
[1]任德贻,代世峰.煤和含煤岩系中潜在的共伴生矿产资源—一个值得重视的问题[J].中国煤炭地质,2009,21(10):1–4.REN Deyi,DAI Shifeng.Potential coexisting and associated mineral resources in coal and coal-bearing strata:An issue should pay close attention to[J].Coal Geology of China,2009,21(10):1–4.
[2]代世峰,任德贻,李生盛.内蒙古准格尔超大型镓矿床的发现[J].科学通报,2006,51(2):177–185.DAI Shifeng,REN Deyi,LI Shengsheng.Discovery of Junggar superlarge gallium deposit in Inner Mongolia of China[J].Chinese Science Bulletin,2006,51(2):177–185.
[3]代世峰,任德贻,周义平,等.煤型稀有金属矿床:成因类型、赋存状态和利用评价[J].煤炭学报,2014,39(8):1707–1715.DAI Shifeng,REN Deyi,ZHOU Yiping,et al.Coal-hosted rare metal deposits:Genetic types,modes of occurrence,and utilization evaluation[J].Journal of China Coal Society,2014,39(8):1707–1715.
[4]黄文辉,孙磊,马延英,等.内蒙古自治区胜利煤田锗矿地质及分布规律[J].煤炭学报,2007,32(11):1147–1151.HUANG Wenhui,SUN Lei,MA Yanying,et al.Distribution and geological feature of the coal-Ge deposit of Shengli coalfield in Inner Mongolia of China[J].Journal of China Coal Society,2007,32(11):1147–1151.
[5]李华,许霞,杨凯.山西平朔矿区4号煤中锂、镓资源成矿地质特征研究[J].中国煤炭地质,2014,26(12):17–19.LI Hua,XU Xia,YANG Kai.Lithium and gallium resources metallogenic geological characteristics in coal No.4,Pingshuo mining area,Shanxi[J].Coal Geology of China,2014,26(12):17–19.
[6]秦身钧,高康,陆青锋,等.煤中锂的研究进展[J].吉林大学学报(地球科学版),2015(增刊1):1–2.QIN Shenjun,GAO Kang,LU Qingfeng,et al.Research progress of lithium in coal[J].Journal of Jilin University(Earth Science Edition),2015(S1):1–2.
[7]代世峰,周义平,任德贻,等.重庆松藻矿区晚二叠世煤的地球化学和矿物学特征及其成因[J].中国科学(D辑:地球科学),2007,37(3):353–362.DAI Shifeng,ZHOU Yiping,REN Deyi,et al.Geochemistry and mineralogical characteristics of Late Permian coal in Songzao mining area of Chongqing and its causes[J].Science in China(D:Earth Science),2007,37(3):353–362.
[8]双燕,朱正杰,刘军,等.重庆郁江煤矿含煤岩系地球化学和矿物学特征[J].矿床地质,2014(增刊1):1185–1186.SHUANG Yan,ZHU Zhengjie,LIU Jun,et al.Geochemistry and mineralogical characteristics of coal-bearing rocks in Yujiang coal mine in Chongqing[J].Mineral Deposits,2014(S1):1185–1186.
[9]DAI Shifeng,LUO Yangbing,SEREDIN V V,et al.Rexisiting the Late Permian coal from the Huayingshan,southwestern China:Enrichment and occurrence modes of minerals and trace elements[J].International Journal of Coal Geology,2014,122:110–128.
[10]任德贻,赵峰华,代世峰.煤的微量元素地球化学[M].北京:科学出版社,2006:79.
[11]DAI Shifeng,WANG Xibo,ZHOU Yiping,et al.Chemical and mineralogical compositions of silicic,mafic,and alkali tonsteins in the Late Permian coals from the Songzao coalfield,Chongqing,southwest China[J].Chemical Geology,2011,282(1/2):29–44.
[12]周义平,任友谅.西南晚二叠世煤田煤中Ga的分布和煤层氧化带内Ga的地球化学特征[J].地质论评,1982(1):47–59.ZHOU Yiping,REN Youliang.Gallium distribution in coal of Late Permian coalfields,southwest China,and its geochemical characteristics in oxidation zones of coal beds[J].Geological Review,1982(1):47–59.
[13]高彩霞.川渝滇黔晚二叠世层序–古地理与聚煤规律研究[D].北京:中国矿业大学(北京),2015.
[14]QUEROL X,ALASTUEY A,LOPEZ-SOLER A,et al.Geological controls on the qualities from the west Shandong mining district,eastern China[J].International Journal of Coal Geology,1999,42:63–88.
[15]李大华,唐跃刚.中国西南地区煤中微量元素的分布和富集成因[M].北京:地质出版社,2008.
[2]代世峰,任德贻,李生盛.内蒙古准格尔超大型镓矿床的发现[J].科学通报,2006,51(2):177–185.DAI Shifeng,REN Deyi,LI Shengsheng.Discovery of Junggar superlarge gallium deposit in Inner Mongolia of China[J].Chinese Science Bulletin,2006,51(2):177–185.
[3]代世峰,任德贻,周义平,等.煤型稀有金属矿床:成因类型、赋存状态和利用评价[J].煤炭学报,2014,39(8):1707–1715.DAI Shifeng,REN Deyi,ZHOU Yiping,et al.Coal-hosted rare metal deposits:Genetic types,modes of occurrence,and utilization evaluation[J].Journal of China Coal Society,2014,39(8):1707–1715.
[4]黄文辉,孙磊,马延英,等.内蒙古自治区胜利煤田锗矿地质及分布规律[J].煤炭学报,2007,32(11):1147–1151.HUANG Wenhui,SUN Lei,MA Yanying,et al.Distribution and geological feature of the coal-Ge deposit of Shengli coalfield in Inner Mongolia of China[J].Journal of China Coal Society,2007,32(11):1147–1151.
[5]李华,许霞,杨凯.山西平朔矿区4号煤中锂、镓资源成矿地质特征研究[J].中国煤炭地质,2014,26(12):17–19.LI Hua,XU Xia,YANG Kai.Lithium and gallium resources metallogenic geological characteristics in coal No.4,Pingshuo mining area,Shanxi[J].Coal Geology of China,2014,26(12):17–19.
[6]秦身钧,高康,陆青锋,等.煤中锂的研究进展[J].吉林大学学报(地球科学版),2015(增刊1):1–2.QIN Shenjun,GAO Kang,LU Qingfeng,et al.Research progress of lithium in coal[J].Journal of Jilin University(Earth Science Edition),2015(S1):1–2.
[7]代世峰,周义平,任德贻,等.重庆松藻矿区晚二叠世煤的地球化学和矿物学特征及其成因[J].中国科学(D辑:地球科学),2007,37(3):353–362.DAI Shifeng,ZHOU Yiping,REN Deyi,et al.Geochemistry and mineralogical characteristics of Late Permian coal in Songzao mining area of Chongqing and its causes[J].Science in China(D:Earth Science),2007,37(3):353–362.
[8]双燕,朱正杰,刘军,等.重庆郁江煤矿含煤岩系地球化学和矿物学特征[J].矿床地质,2014(增刊1):1185–1186.SHUANG Yan,ZHU Zhengjie,LIU Jun,et al.Geochemistry and mineralogical characteristics of coal-bearing rocks in Yujiang coal mine in Chongqing[J].Mineral Deposits,2014(S1):1185–1186.
[9]DAI Shifeng,LUO Yangbing,SEREDIN V V,et al.Rexisiting the Late Permian coal from the Huayingshan,southwestern China:Enrichment and occurrence modes of minerals and trace elements[J].International Journal of Coal Geology,2014,122:110–128.
[10]任德贻,赵峰华,代世峰.煤的微量元素地球化学[M].北京:科学出版社,2006:79.
[11]DAI Shifeng,WANG Xibo,ZHOU Yiping,et al.Chemical and mineralogical compositions of silicic,mafic,and alkali tonsteins in the Late Permian coals from the Songzao coalfield,Chongqing,southwest China[J].Chemical Geology,2011,282(1/2):29–44.
[12]周义平,任友谅.西南晚二叠世煤田煤中Ga的分布和煤层氧化带内Ga的地球化学特征[J].地质论评,1982(1):47–59.ZHOU Yiping,REN Youliang.Gallium distribution in coal of Late Permian coalfields,southwest China,and its geochemical characteristics in oxidation zones of coal beds[J].Geological Review,1982(1):47–59.
[13]高彩霞.川渝滇黔晚二叠世层序–古地理与聚煤规律研究[D].北京:中国矿业大学(北京),2015.
[14]QUEROL X,ALASTUEY A,LOPEZ-SOLER A,et al.Geological controls on the qualities from the west Shandong mining district,eastern China[J].International Journal of Coal Geology,1999,42:63–88.
[15]李大华,唐跃刚.中国西南地区煤中微量元素的分布和富集成因[M].北京:地质出版社,2008.