苗儿山北段深冲铀矿地质特征及成因探讨
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摘要
深冲矿区位于苗儿山铀矿富集区,是花岗岩型铀矿产地.本文从地质背景、矿床地质特征、矿石矿物组成、围岩蚀变、包裹体特征、铅同位素组成、氢氧同位素组成等入手,系统阐明深冲矿区铀矿地质、地球化学特征.初步认为该矿床类型为碎裂蚀变花岗岩型,铀成矿物质来源具有壳幔源混合特点,是低温低盐度岩浆热液成因铀矿床.
Shenchong mining area in Miaoershan District rich in uranium,is the the origin of granite type uranium deposits. This paper clarifies uranium geology and geochemical characteristics of Shenchong deposits from the geological background,geological characteristics of the deposit,ore minerals compositions,wall rock alteration,characteristics of fluid inclusion,lead isotopic composition and hydrogen and oxygen isotopic composition. It is considered this deposit belongs to cataclastic altered granite type,and its uranium ore-forming material source has the characteristics of crust mantle mixing of the uranium deposit which is low temperature and low salinity magmatic hydrothermal uranium deposit.
Shenchong mining area in Miaoershan District rich in uranium,is the the origin of granite type uranium deposits. This paper clarifies uranium geology and geochemical characteristics of Shenchong deposits from the geological background,geological characteristics of the deposit,ore minerals compositions,wall rock alteration,characteristics of fluid inclusion,lead isotopic composition and hydrogen and oxygen isotopic composition. It is considered this deposit belongs to cataclastic altered granite type,and its uranium ore-forming material source has the characteristics of crust mantle mixing of the uranium deposit which is low temperature and low salinity magmatic hydrothermal uranium deposit.
引文
[1]夏锐,邓军,卿敏,等.青海大场金矿田矿床成因:流体包裹体地球化学及H-O同位素约束[J].岩石学报,2013,29(4):1358-1376.
[2]傅晓明,戴培根,息朝庄,等.青海双朋西金铜矿的成矿流体特征及流体来源[J].地球科学进展,2009,24(5):531-537.
[3]郎兴海,唐菊兴,李志军,等.西藏雄村斑岩型铜金矿集区Ⅰ号矿体的硫、铅同位素特征及其对成矿物质来源的指示[J].地球学报,2012,33(4):459-470.
[4]沈熊平,苏文超,符亚洲,等.贵州独山巴年锑矿床硫、铅同位素特征及其对成矿物质来源的指示[J].矿物学报,2013,33(3):271-277.
[5]宋生琼,胡瑞忠,毕献武,等.赣南崇义淘锡坑钨矿床氢、氧、硫同位素地球化学研究[J].矿床地质,2011,30(1):1-10.
[6]耿新霞,姜丽萍,柴凤梅,等.新疆阿尔泰两棵树铁矿流体包裹体及氢氧同位素特征[J]岩矿测试,2013,32(2):340-347.
[7]石少华,胡瑞忠,温汉捷,等.桂北沙子江铀矿床流体包裹体初步研究[J].矿床地质,2011,30(1):33-44.
[8]陈健,王正其.浙江大桥坞铀矿床铅、氢氧同位素研究[J].东华理工大学学报(自然科学版),2012,35(1):38-42.
[9]金灿海,范文玉,张海,等.云南卓玛铅锌矿床地球化学特征及矿床成因[J].中国质,2013,40(6):1902-1911.
[10]白俊豪,黄智龙,朱丹,等.云南金沙厂铅锌矿床硫同位素地球化学特征[J].矿物学报,2013,33(2):256-264.
[11]Marcoux E,Grancea I,Lupulescu M,et al.Lead isotope signatures of epithemal and porphyry-type ore deposits from the Romanian Carpathian Mountains[J].Miner.Deposita,2002,37(2):173-184.
[12]Parry W T.Estimation of XCO2,P,and fluid inclusion volumc from fluid inclusion temperature measurem-ents in the system Na Cl-CO2-H2O[J].Economic Geology,1986,81(4):1009-1013.
[13]Goldfarb R J,Phillips G N,Nokleberg W J.Tectonic setting of synorogenic gold deposits of the Pacific Rim[J].Ore Geology Reviews,1998,13(1-5):185-219.
[14]Kamenov G,Macfarlane A W,Riciputi L.Sources of lead in the San Cristobal Pulacayo and Potosimining districts Bolivia and revaluation of regional ore lead isotope provinces[J].Economic Geology,2002,97(3):573-592.
[2]傅晓明,戴培根,息朝庄,等.青海双朋西金铜矿的成矿流体特征及流体来源[J].地球科学进展,2009,24(5):531-537.
[3]郎兴海,唐菊兴,李志军,等.西藏雄村斑岩型铜金矿集区Ⅰ号矿体的硫、铅同位素特征及其对成矿物质来源的指示[J].地球学报,2012,33(4):459-470.
[4]沈熊平,苏文超,符亚洲,等.贵州独山巴年锑矿床硫、铅同位素特征及其对成矿物质来源的指示[J].矿物学报,2013,33(3):271-277.
[5]宋生琼,胡瑞忠,毕献武,等.赣南崇义淘锡坑钨矿床氢、氧、硫同位素地球化学研究[J].矿床地质,2011,30(1):1-10.
[6]耿新霞,姜丽萍,柴凤梅,等.新疆阿尔泰两棵树铁矿流体包裹体及氢氧同位素特征[J]岩矿测试,2013,32(2):340-347.
[7]石少华,胡瑞忠,温汉捷,等.桂北沙子江铀矿床流体包裹体初步研究[J].矿床地质,2011,30(1):33-44.
[8]陈健,王正其.浙江大桥坞铀矿床铅、氢氧同位素研究[J].东华理工大学学报(自然科学版),2012,35(1):38-42.
[9]金灿海,范文玉,张海,等.云南卓玛铅锌矿床地球化学特征及矿床成因[J].中国质,2013,40(6):1902-1911.
[10]白俊豪,黄智龙,朱丹,等.云南金沙厂铅锌矿床硫同位素地球化学特征[J].矿物学报,2013,33(2):256-264.
[11]Marcoux E,Grancea I,Lupulescu M,et al.Lead isotope signatures of epithemal and porphyry-type ore deposits from the Romanian Carpathian Mountains[J].Miner.Deposita,2002,37(2):173-184.
[12]Parry W T.Estimation of XCO2,P,and fluid inclusion volumc from fluid inclusion temperature measurem-ents in the system Na Cl-CO2-H2O[J].Economic Geology,1986,81(4):1009-1013.
[13]Goldfarb R J,Phillips G N,Nokleberg W J.Tectonic setting of synorogenic gold deposits of the Pacific Rim[J].Ore Geology Reviews,1998,13(1-5):185-219.
[14]Kamenov G,Macfarlane A W,Riciputi L.Sources of lead in the San Cristobal Pulacayo and Potosimining districts Bolivia and revaluation of regional ore lead isotope provinces[J].Economic Geology,2002,97(3):573-592.