东天山三宫岩体角闪石矿物学特征及其地质意义
|
摘要
三宫岩体是东天山哈尔里克岛弧带南缘新发现的二叠纪铜镍矿化岩体,由浅部到深部主要岩石类型依次为辉长岩、橄榄辉长岩和含角闪石橄榄辉长岩,各岩相普遍发育富水矿物角闪石。文章应用电子探针对角闪石进行了成分分析,并探讨了其形成的物理化学条件。结果表明三宫岩体角闪石属于钙角闪石类的韭闪石和镁绿钙闪石,为幔源岩浆结晶形成;三宫岩体是碰撞后伸展阶段幔源岩浆上侵形成,成岩深度为7. 1～10. 6 km,温度为909～968℃,压力为201～299 Mpa,岩浆氧逸度较高,o2为-9. 6～-10. 4,水量为2. 9%～4. 3%。综合研究认为,岩浆源区和结晶环境可能共同导致了岩体具有高氧逸度和富水的特征。
The Sangong Ni-Cu mineralization intrusion is a newly-discovered intrusion located in the southern section of Paleo-zoic Harlik island arc,Eastern Tianshan. The mafic intrusion formed in the early Permain and mainly consists of gabbro,olivine gabbroand amphibole-bearing olivine gabbro with the increasing depth. The compositional analysis of amphibole mineral in the mafic rock wasconducted by EMPA,and the physicochemical parameters of the parental magma were calculated and discussed. The results suggestthat the amphibole mineral in the Sangong mafic rock is classified as pargasite and magnesiohastingsite,and is produced by crystalliza-tion of mantle-derived magma. The Sangong Ni-Cu mineralization intrusion is the direct crystallization products of mantle-derivedmagma emplacement in the Post-collisional crustal extension setting,and the mafic rock crystallized at the temperature of 909℃-968℃,the pressure of 201 Mpa-299 Mpa,the oxygen fugacity of-9. 6--10. 4 and H_2O content of the melt is 2. 9%-4. 3%. Comp-erhensive study showed that the magma source and crystallization environment jointly caused the characteristics of water-rich and highoxygen fugacity of the intrusion.
The Sangong Ni-Cu mineralization intrusion is a newly-discovered intrusion located in the southern section of Paleo-zoic Harlik island arc,Eastern Tianshan. The mafic intrusion formed in the early Permain and mainly consists of gabbro,olivine gabbroand amphibole-bearing olivine gabbro with the increasing depth. The compositional analysis of amphibole mineral in the mafic rock wasconducted by EMPA,and the physicochemical parameters of the parental magma were calculated and discussed. The results suggestthat the amphibole mineral in the Sangong mafic rock is classified as pargasite and magnesiohastingsite,and is produced by crystalliza-tion of mantle-derived magma. The Sangong Ni-Cu mineralization intrusion is the direct crystallization products of mantle-derivedmagma emplacement in the Post-collisional crustal extension setting,and the mafic rock crystallized at the temperature of 909℃-968℃,the pressure of 201 Mpa-299 Mpa,the oxygen fugacity of-9. 6--10. 4 and H_2O content of the melt is 2. 9%-4. 3%. Comp-erhensive study showed that the magma source and crystallization environment jointly caused the characteristics of water-rich and highoxygen fugacity of the intrusion.
引文
Ague J J.1997.Thermodynamic calculation of emplacement pressures for batholithic rocks,California:Implications for the aluminum-inhornblende barometer[J].Geology,25(6):563-566.
Anderson J L,Barth A P,Wooden J L,et al.2008.Thermometers and thermobarometers in granitic systems[J].Rev Mineral Geochem,69(1):121-142.
Bi X W,Hu R Z,Hanley J J,et al.2009.Crystallisation conditions(T,P,f O2)from mineral chemistry of Cu-and Au-mineralised alkaline intrusions in the Red River-Jinshajiang alkaline igneous belt,western Yunnan Province,China[J].Mineral Petrol,96(1):43-58
Blundy J D,Holland T J B.1990.Calcic amphibole equilibria and a new amphibole-plagioclase geothermometer[J].Contrib.Mineral.Petrol.,104(2):208-224.
Coltorti M,Bonadiman C,Faccini B,et al.2007.Amphiboles from suprasubduction and intraplate lithospheric mantle[J].Lithos,99(1):68-84.
Ernst W G,Liu J.1998.Experimental phase equilibrium study of Al and Ti contents of calcic amphibole in MORB-A semiquantitative thermobarometer[J].Am.Mine.,83(9-10):952-969.
Feng Y,Qian Z,Duan J,et al.2018.Geochronological and geochemical study of the Baixintan magmatic Ni-Cu sulphide deposit:New implications for the exploration potential in the western part of the East Tianshan Nickel belt(NW China)[J].Ore Geology Reviews,95:366-381.
Han C,Xiao W,Zhao G,et al.2013.SIMS U-Pb zircon dating and Re-Os isotopic analysis of the Hulu Cu-Ni deposit,eastern Tianshan,Central Asian Orogenic Belt,and its geological significance[J].J.Geosci.58(3),251-270.
Leake B E,Woolley A R,Arps C E S,et al.1997.Nomenclature of amphiboles:Report of the subcommittee on amphiboles of the international mineralogical association commission on new minerals and mineral names[J].Eur J Mineral,9(3):623-651.
Luan Y,Song X Y,Chen L M,et al.2014.Key factors controlling the accumulation of the Fe-Ti oxides in the Hongge layered intrusion in the Emeishan Large Igneous Province,SW China[J].Ore Geol.Rev.57:518-538.
Mao J W,Pirajno F,Zhang Z H,et al.2008.A review of the Cu-Ni sulphide deposits in the Chinese Tianshan and Altay orogens(Xinjiang Autonomous Region,NW China):principal characteristics and oreforming processes[J].J.Asian Earth Sci.32:184-203.
Qin K Z,Zhang L C,Xiao W J,et al.2003.Overview of major Au,Cu,Ni and Fe deposits and metallogenic evolution of the eastern Tianshan Mountains,northwestern China.In:Mao J W,Goldfarb R,Seltmann R,Wang D H,et al.(Eds.),Tectonic Evolution and Metallogeny of the Chinese Altay and Tianshan,IAGOD Guidebook Series,London,10.227-248.
Ridolfi F,Puerini M,Renzulli A,et al.2008.T he magmatic feeding system of El Reventador volcano(Sub-Andeanzone,Ecuador)constrained by texture,mineralogy and thermobarometry of the 2002 erupted products[J].J.Volcanol.Geotherm.Res.,176(1):94-106.
Ridolfi F,Renzulli A,Puerini M.2010.Stability and chemical equilibrium of amphibole in calc-alkaline magmas:An overview,new thermobarometric formulations and application to subductionrelated volcanoes[J].Contrib.Mineral.Petrol.,160(1):45-66.
Zhou M F,Lesher C M,Yang Z X,et al.2004.Geochemistry and petrogenesis of 270 Ma Ni-Cu-(PGE)sulfide-bearing mafic intrusions in the Huangshan district,Eastern Xinjiang,Northwest China:implications for the tectonic evolution of the Central Asian orogenic belt[J].Chem.Geol.209:233-257.
柴凤梅.2006.新疆北部三个与岩浆型Ni-Cu硫化物矿床有关的镁铁-超镁铁质岩的地球化学特征对比研究[D].北京:中国地质大学(北京).
陈世平,王登红,屈文俊,等.2005.新疆葫芦铜镍硫化物矿床的地质特征与成矿时代[J].新疆地质,23(3):230-233.
陈希希,舒良树.2010.新疆哈尔里克山后碰撞期构造-岩浆活动特征及年代学证据[J].岩石学报,26(10):3057-3064.
冯延清,钱壮志,徐刚,等.2017.东天山二叠纪镁铁-超镁铁质成矿岩体造岩矿物特征及其成因意义[J].岩石矿物学杂志,36(4):519-534.
龚林,陈华勇,肖兵,等.2018.新疆赤湖-福兴铜矿区角闪石矿物化学特征及其地质意义[J].地球化学,47(2):149-168.
韩宝福,季建清,宋彪,等.2004.新疆喀拉通克和黄山东含铜镍矿镁铁-超镁铁杂岩体的SHRIMP锆石U-Pb年龄及其地质意义[J].科学通报,49(22):2324-2328.
贺文,叶会寿,胡华斌,等.2015.冀东孤山子超基性岩体矿物岩石地球化学及Sr-Nd-Pb同位素特征[J].地质学报,89(7):1162-1179.
江宏君,陈华勇,韩金生,等.2016.东天山沙泉子铁铜矿床矿物学特征及其成矿意义[J].地球化学,45(4):329-355.
姜常义,安三元.1984.论火成岩中钙质角闪石的化学组成特征及其岩石学意义[J].矿物岩石,4(3):1-9.
李德东,王玉往,龙灵利,等.2012.东天山过渡型矿化镁铁-超镁铁岩年代学和地球化学特征[J].地质论评,58(6):1145-1160.
李鑫,王敦科,赵树铭.2014.哈密白鑫滩岩浆型铜镍硫化物矿床的发现[J].新疆地质,(4):466-469.
刘德权,唐延龄,周汝洪.2005.中国新疆铜矿床和镍矿床[M].北京:地质出版社.
栾燕,宋谢炎,陈列锰,等.2014.四川红格层状侵入体中角闪石和金云母的矿物学特征及其成因意义[J].岩石学报,30(5):1457-1471.
秦克章,唐冬梅,苏本勋,等.2012.北疆二叠纪镁铁-超镁铁岩铜、镍矿床的构造背景、岩体类型、基本特征、相对剥蚀程度、含矿性评价标志及成矿潜力分析[J].西北地质,45(4):83-116.
任萌.2017.新疆白鑫滩铜镍硫化物矿床岩相学、矿物学及岩体成因研究[D].西安:长安大学.
三金柱,秦克章,汤中立,等.2010.东天山图拉尔根大型铜镍矿区两个镁铁-超镁铁岩体的锆石U-Pb定年及其地质意义[J].岩石学报,26(10):3027-3035.
石煜,王玉往,王京彬,等.2016.东天山尾亚钒钛磁铁矿矿床角闪石矿物学特征及成因意义[J].矿产勘查,7(1):45-52.
石煜,王玉往,王京彬.2017.东天山似斑状角闪辉长岩类与铁钛氧化物矿床的关系[J].地学前缘,24(6):80-97.
孙桂华,李锦轶,高立明,等.2005.新疆东部哈尔里克山闪长岩锆石SHRIMP U-Pb定年及其地质意义[J].地质论评,51(4):463-469.
孙桂华.2007.新疆哈尔里克山古生代以来构造变形及构造演化[D].中国地质科学院.
汪传胜,顾连兴,张遵忠,等.2009.东天山哈尔里克山区二叠纪高钾钙碱性花岗岩成因及地质意义[J].岩石学报,25(6):1499-1511.
王京彬,王玉往,何志军.2006.东天山大地构造演化的成矿示踪[J].中国地质,33(3):461-469.
王京彬,徐新.2006.新疆北部后碰撞构造演化与成矿[J].地质学报,80(1):23-31.
王亚磊,张照伟,尹希文,等.2016.东天山三宫铜镍矿化岩体年代学、岩石地球化学特征及对Cu-Ni找矿的启示[J].地球学报,37(6):699-710.
王亚磊,张照伟,尤敏鑫,等.2015.东天山白鑫滩铜镍矿锆石U-Pb年代学、地球化学特征及对Ni-Cu找矿的启示[J].中国地质,42(3):452-467.
王玉往,王京彬,王莉娟,等.2004.新疆哈密黄山地区铜镍硫化物矿床的稀土元素特征及意义[J].岩石学报,20(4):935-948.
王玉往,王京彬,王莉娟,等.2009.新疆香山铜镍钛铁矿区两个镁铁-超镁铁岩系列及特征[J].岩石学报,25(4):888-900.
王玉往,王京彬,王莉娟,等.2010.CuNi-VTi Fe复合型矿化镁铁-超镁铁杂岩体岩相学及岩石地球化学特征:以新疆北部为例[J].岩石学报,26(2):401-412.
杨万志,任燕,田江涛,等.2017.东天山路北铜镍矿的发现及其意义[J].矿物岩石地球化学通报,36(1):112-120.
赵冰冰.2017.新疆东天山地区白鑫滩与路北铜镍硫化物矿床成因研究[D].合肥工业大学,
赵明,舒良树,朱文斌,等.2002.东疆哈尔里克变质带的U-Pb年龄及其地质意义[J].地质学报,76(3):379-383.
赵同阳,徐仕琪,朱志新,等.2014.新疆博格达-哈尔里克山地区石炭纪火山岩地质地球化学特征及其构造意义[J].地质论评,60(1):115-124.
Anderson J L,Barth A P,Wooden J L,et al.2008.Thermometers and thermobarometers in granitic systems[J].Rev Mineral Geochem,69(1):121-142.
Bi X W,Hu R Z,Hanley J J,et al.2009.Crystallisation conditions(T,P,f O2)from mineral chemistry of Cu-and Au-mineralised alkaline intrusions in the Red River-Jinshajiang alkaline igneous belt,western Yunnan Province,China[J].Mineral Petrol,96(1):43-58
Blundy J D,Holland T J B.1990.Calcic amphibole equilibria and a new amphibole-plagioclase geothermometer[J].Contrib.Mineral.Petrol.,104(2):208-224.
Coltorti M,Bonadiman C,Faccini B,et al.2007.Amphiboles from suprasubduction and intraplate lithospheric mantle[J].Lithos,99(1):68-84.
Ernst W G,Liu J.1998.Experimental phase equilibrium study of Al and Ti contents of calcic amphibole in MORB-A semiquantitative thermobarometer[J].Am.Mine.,83(9-10):952-969.
Feng Y,Qian Z,Duan J,et al.2018.Geochronological and geochemical study of the Baixintan magmatic Ni-Cu sulphide deposit:New implications for the exploration potential in the western part of the East Tianshan Nickel belt(NW China)[J].Ore Geology Reviews,95:366-381.
Han C,Xiao W,Zhao G,et al.2013.SIMS U-Pb zircon dating and Re-Os isotopic analysis of the Hulu Cu-Ni deposit,eastern Tianshan,Central Asian Orogenic Belt,and its geological significance[J].J.Geosci.58(3),251-270.
Leake B E,Woolley A R,Arps C E S,et al.1997.Nomenclature of amphiboles:Report of the subcommittee on amphiboles of the international mineralogical association commission on new minerals and mineral names[J].Eur J Mineral,9(3):623-651.
Luan Y,Song X Y,Chen L M,et al.2014.Key factors controlling the accumulation of the Fe-Ti oxides in the Hongge layered intrusion in the Emeishan Large Igneous Province,SW China[J].Ore Geol.Rev.57:518-538.
Mao J W,Pirajno F,Zhang Z H,et al.2008.A review of the Cu-Ni sulphide deposits in the Chinese Tianshan and Altay orogens(Xinjiang Autonomous Region,NW China):principal characteristics and oreforming processes[J].J.Asian Earth Sci.32:184-203.
Qin K Z,Zhang L C,Xiao W J,et al.2003.Overview of major Au,Cu,Ni and Fe deposits and metallogenic evolution of the eastern Tianshan Mountains,northwestern China.In:Mao J W,Goldfarb R,Seltmann R,Wang D H,et al.(Eds.),Tectonic Evolution and Metallogeny of the Chinese Altay and Tianshan,IAGOD Guidebook Series,London,10.227-248.
Ridolfi F,Puerini M,Renzulli A,et al.2008.T he magmatic feeding system of El Reventador volcano(Sub-Andeanzone,Ecuador)constrained by texture,mineralogy and thermobarometry of the 2002 erupted products[J].J.Volcanol.Geotherm.Res.,176(1):94-106.
Ridolfi F,Renzulli A,Puerini M.2010.Stability and chemical equilibrium of amphibole in calc-alkaline magmas:An overview,new thermobarometric formulations and application to subductionrelated volcanoes[J].Contrib.Mineral.Petrol.,160(1):45-66.
Zhou M F,Lesher C M,Yang Z X,et al.2004.Geochemistry and petrogenesis of 270 Ma Ni-Cu-(PGE)sulfide-bearing mafic intrusions in the Huangshan district,Eastern Xinjiang,Northwest China:implications for the tectonic evolution of the Central Asian orogenic belt[J].Chem.Geol.209:233-257.
柴凤梅.2006.新疆北部三个与岩浆型Ni-Cu硫化物矿床有关的镁铁-超镁铁质岩的地球化学特征对比研究[D].北京:中国地质大学(北京).
陈世平,王登红,屈文俊,等.2005.新疆葫芦铜镍硫化物矿床的地质特征与成矿时代[J].新疆地质,23(3):230-233.
陈希希,舒良树.2010.新疆哈尔里克山后碰撞期构造-岩浆活动特征及年代学证据[J].岩石学报,26(10):3057-3064.
冯延清,钱壮志,徐刚,等.2017.东天山二叠纪镁铁-超镁铁质成矿岩体造岩矿物特征及其成因意义[J].岩石矿物学杂志,36(4):519-534.
龚林,陈华勇,肖兵,等.2018.新疆赤湖-福兴铜矿区角闪石矿物化学特征及其地质意义[J].地球化学,47(2):149-168.
韩宝福,季建清,宋彪,等.2004.新疆喀拉通克和黄山东含铜镍矿镁铁-超镁铁杂岩体的SHRIMP锆石U-Pb年龄及其地质意义[J].科学通报,49(22):2324-2328.
贺文,叶会寿,胡华斌,等.2015.冀东孤山子超基性岩体矿物岩石地球化学及Sr-Nd-Pb同位素特征[J].地质学报,89(7):1162-1179.
江宏君,陈华勇,韩金生,等.2016.东天山沙泉子铁铜矿床矿物学特征及其成矿意义[J].地球化学,45(4):329-355.
姜常义,安三元.1984.论火成岩中钙质角闪石的化学组成特征及其岩石学意义[J].矿物岩石,4(3):1-9.
李德东,王玉往,龙灵利,等.2012.东天山过渡型矿化镁铁-超镁铁岩年代学和地球化学特征[J].地质论评,58(6):1145-1160.
李鑫,王敦科,赵树铭.2014.哈密白鑫滩岩浆型铜镍硫化物矿床的发现[J].新疆地质,(4):466-469.
刘德权,唐延龄,周汝洪.2005.中国新疆铜矿床和镍矿床[M].北京:地质出版社.
栾燕,宋谢炎,陈列锰,等.2014.四川红格层状侵入体中角闪石和金云母的矿物学特征及其成因意义[J].岩石学报,30(5):1457-1471.
秦克章,唐冬梅,苏本勋,等.2012.北疆二叠纪镁铁-超镁铁岩铜、镍矿床的构造背景、岩体类型、基本特征、相对剥蚀程度、含矿性评价标志及成矿潜力分析[J].西北地质,45(4):83-116.
任萌.2017.新疆白鑫滩铜镍硫化物矿床岩相学、矿物学及岩体成因研究[D].西安:长安大学.
三金柱,秦克章,汤中立,等.2010.东天山图拉尔根大型铜镍矿区两个镁铁-超镁铁岩体的锆石U-Pb定年及其地质意义[J].岩石学报,26(10):3027-3035.
石煜,王玉往,王京彬,等.2016.东天山尾亚钒钛磁铁矿矿床角闪石矿物学特征及成因意义[J].矿产勘查,7(1):45-52.
石煜,王玉往,王京彬.2017.东天山似斑状角闪辉长岩类与铁钛氧化物矿床的关系[J].地学前缘,24(6):80-97.
孙桂华,李锦轶,高立明,等.2005.新疆东部哈尔里克山闪长岩锆石SHRIMP U-Pb定年及其地质意义[J].地质论评,51(4):463-469.
孙桂华.2007.新疆哈尔里克山古生代以来构造变形及构造演化[D].中国地质科学院.
汪传胜,顾连兴,张遵忠,等.2009.东天山哈尔里克山区二叠纪高钾钙碱性花岗岩成因及地质意义[J].岩石学报,25(6):1499-1511.
王京彬,王玉往,何志军.2006.东天山大地构造演化的成矿示踪[J].中国地质,33(3):461-469.
王京彬,徐新.2006.新疆北部后碰撞构造演化与成矿[J].地质学报,80(1):23-31.
王亚磊,张照伟,尹希文,等.2016.东天山三宫铜镍矿化岩体年代学、岩石地球化学特征及对Cu-Ni找矿的启示[J].地球学报,37(6):699-710.
王亚磊,张照伟,尤敏鑫,等.2015.东天山白鑫滩铜镍矿锆石U-Pb年代学、地球化学特征及对Ni-Cu找矿的启示[J].中国地质,42(3):452-467.
王玉往,王京彬,王莉娟,等.2004.新疆哈密黄山地区铜镍硫化物矿床的稀土元素特征及意义[J].岩石学报,20(4):935-948.
王玉往,王京彬,王莉娟,等.2009.新疆香山铜镍钛铁矿区两个镁铁-超镁铁岩系列及特征[J].岩石学报,25(4):888-900.
王玉往,王京彬,王莉娟,等.2010.CuNi-VTi Fe复合型矿化镁铁-超镁铁杂岩体岩相学及岩石地球化学特征:以新疆北部为例[J].岩石学报,26(2):401-412.
杨万志,任燕,田江涛,等.2017.东天山路北铜镍矿的发现及其意义[J].矿物岩石地球化学通报,36(1):112-120.
赵冰冰.2017.新疆东天山地区白鑫滩与路北铜镍硫化物矿床成因研究[D].合肥工业大学,
赵明,舒良树,朱文斌,等.2002.东疆哈尔里克变质带的U-Pb年龄及其地质意义[J].地质学报,76(3):379-383.
赵同阳,徐仕琪,朱志新,等.2014.新疆博格达-哈尔里克山地区石炭纪火山岩地质地球化学特征及其构造意义[J].地质论评,60(1):115-124.