|Table of Contents|

Mineralogical Characteristics of Pyroxenes from Tulargen Mafic-ultramafic Intrusion in East Tianshan, China and Their Geological Significance(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2019年第04期
Page:
445-458
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Mineralogical Characteristics of Pyroxenes from Tulargen Mafic-ultramafic Intrusion in East Tianshan, China and Their Geological Significance
Author(s):
LIU Yan-rong12 LYU Xin-biao3 LIU Min-wu12 LUAN Yan12 WANG Fu-gui4
(1. School of Earth Science and Resources, Chang’an University, Xi’an 710054, Shaanxi, China; 2. Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education,Chang’an University, Xi’an 710054, Shaanxi, China; 3. School of Earth Resources, China University of Geosciences, Wuhan 430074, Hubei, China; 4. The Third Institute of Geological and Mineral Exploration, Gansu Provincial Bureau of Geology and Mineral Resources, Lanzhou 730050, Gansu, China)
Keywords:
mafic-ultramafic intrusion pyroxene geothermobarometer primary magma partial melting fractional crystallization crustal contamination East Tianshan
PACS:
P588.12; P57
DOI:
-
Abstract:
Tulargen mafic-ultramafic intrusion in East Tianshan is composed mainly of amphibole peridotite facies, pyroxene peridotite facies and gabbro facies. Pyroxene, the major rock-forming mineral of the intrusion, is present in almost every lithofacies. In order to have a better understanding of the nature, origin and evolution of the intrusion, the compositions of pyroxene by EPMA and LA-ICPMS were analyzed. The orthopyroxenes from Tulargen mafic-ultramafic intrusion in East Tianshan are bronzites, and the clinopyroxenes are composed of diopside and endiopside. The crystallization temperatures of the pyroxene are from 978 ℃ to 1 059 ℃, and the crystallization pressures range mainly from 0.71 kbar to 4.80 kbar. The primary magma of Tulargen intrusion is sub-alkaline tholeiitic magma, and is the production of 13%-20% partial melting of the depleted mantle metasomated by a subducted slab. The chemical compositions of pyroxenes in different lithofacies change slightly, indicating that Tulargen intrusion experiences a low degree of fractional crystallization, and the crystallization degree of the gabbro facies is slightly higher than that of the amphibole peridotite facies and pyroxene peridotite facies. The gabbro facies and peridotite facies are contaminated by Al-rich and Si-rich rocks, respectively. The fractional crystallization and contamination of Si-rich rocks could be responsible for the sulfur saturation and sulfide segregation.

References:

[1] 陈 波,夏明哲,汪帮耀,等.新疆东天山黄山岩体岩石地球化学特征与岩石成因[J].矿物岩石,2011,31(1):11-21.
CHEN Bo,XIA Ming-zhe,WANG Bang-yao,et al.Lithogeochemistry and Petrogenesis of Huangshan Intrusion,East Tianshan,Xinjiang[J].Journal of Mine-ralogy and Petrology,2011,31(1):11-21.
[2]孙 赫,秦克章,李金祥,等.东天山图拉尔根铜镍钴硫化物矿床岩相、岩石地球化学特征及其形成的构造背景[J].中国地质,2006,33(3):606-617.
SUN He,QIN Ke-zhang,LI Jin-xiang,et al.Petrographic and Geochemical Characteristics of the Tulargen Cu-Ni-Co Sulfide Deposit,East Tianshan,Xinjiang,and Its Tectonic Setting[J].Geology in China,2006,33(3):606-617.
[3]三金柱,秦克章,汤中立,等.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,2010,26(10):3027-3035.
SAN Jin-zhu,QIN Ke-zhang,TANG Zhong-li,et al.Precise Zircon U-Pb Age Dating of Two Mafic-ultramafic Complexes at Tulargen Large Cu-Ni District and Its Geological Implications[J].Acta Petrologica Sinica,2010,26(10):3027-3035.
[4]焦建刚,汤中立,钱壮志,等.东天山地区图拉尔根铜镍硫化物矿床成因及成矿过程[J].岩石学报,2012,28(11):3772-3786.
JIAO Jian-gang,TANG Zhong-li,QIAN Zhuang-zhi,et al.Genesis and Metallogenic Process of Tulargen Large Scale Cu-Ni Sulfide Deposit in Eastern Tian-shan Area,Xinjiang[J].Acta Petrologica Sinica,2012,28(11):3772-3786.
[5]ZHAO Y,XUE C J,LIU S A,et al.Copper Isotope Fractionation During Sulfide Magma Differentiation in the Tula’ergen Magmatic Ni-Cu Deposit,NW China[J].Lithos,2017,286/287:206-215.
[6]刘艳荣,吕新彪,梅 微,等.新疆东天山镁铁—超镁铁岩体中橄榄石成分特征及其成因意义:以黄山东和图拉尔根为例[J].地球化学,2012,41(1):78-88.
LIU Yan-rong,LU Xin-biao,MEI Wei,et al.Compositions of Olivine from the Mafic-ultramafic Complexes in Eastern Tianshan,Xinjiang and Implications to Petrogenesis:Examples from Huangshandong and Tulargen Complexes[J].Geochimica,2012,41(1):78-88.
[7]郭海棠,唐冬梅,三金柱,等.东天山图拉尔根大型铜镍硫化物矿床的斜长石主量成分特征:对矿床成因的指示[J].地质与勘探,2014,50(2):269-280.
GUO Hai-tang,TANG Dong-mei,SAN Jin-zhu,et al.Mineral Characteristics and Mineralization of the Tula’ergen Magmatic Ni-Cu Sulfide Deposit,Eastern Tianshan:Constraints from Major Oxide Compositions of Plagioclase[J].Geology and Exploration,2014,50(2):269-280.
[8]TANG D M,QIN K Z,SUN H,et al.The Role of Crustal Contamination in the Formation of Ni-Cu Sulfide Deposits in Eastern Tianshan,Xinjiang,Northwest China:Evidence from Trace Element Geochemistry,Re-Os,Sr-Nd,Zircon Hf-O,and Sulfur Isotopes[J].Journal of Asian Earth Sciences,2012,49:145-160.
[9]SONG X Y,CHEN L M,DENG Y F,et al.Syncollisional Tholeiitic Magmatism Induced by Asthenosphere Upwelling Owing to Slab Detachment at the Southern Margin of the Central Asian Orogenic Belt[J].Journal of the Geological Society,2013,170(6):941-950.
[10]QIN K Z,SU B X,SAKYI P A,et al.SIMS Zircon U-Pb Geochronology and Sr-Nd Isotopes of Ni-Cu-bearing Mafic-ultramafic Intrusions in Eastern Tianshan and Beishan in Correlation with Flood Basalts in Tarim Basin(NW China):Constraints on a ca.280 Ma Mantle Plume[J].American Journal of Science,2011,311(3):237-260.
[11]SU B X,QIN K Z,SAKYI P A,et al.U-Pb Ages and Hf-O Isotopes of Zircons from Late Paleozoic Mafic-ultramafic Units in the Southern Central Asian Orogenic Belt:Tectonic Implications and Evidence for an Early-Permian Mantle Plume[J].Gondwana Research,2011,20(2/3):516-531.
[12]SU B X,QIN K Z,SUN H,et al.Subduction-induced Mantle Heterogeneity Beneath Eastern Tianshan and Beishan:Insights from Nd-Sr-Hf-O Isotopic Mapping of Late Paleozoic Mafic-ultramafic Complexes[J].Lithos,2012,134/135:41-51.
[13]倪志耀.黄山东镁铁—超镁铁杂岩中的辉石化学成分研究[J].岩石矿物学杂志,1994,13(1):55-65.
NI Zhi-yao.Chemical Composition of Pyroxenes from the Huangshandong Mafic-ultramafic Complex in Hami,Xinjiang[J].Acta Petrologica et Mineralogica,1994,13(1):55-65.
[14]范亚洲,王 垚,陈丹丽,等.新疆东天山黄山南基性—超基性岩体岩石学、矿物学研究[J].新疆地质,2014,32(3):310-315.
FAN Ya-zhou,WANG Yao,CHEN Dan-li,et al.Study on the Petrogenesis and Mineralogy of Huangshannan Basic-ultrabasic Intrusion in East Tianshan,Xinjiang[J].Xinjiang Geology,2014,32(3):310-315.
[15]薛胜超,秦克章,唐冬梅,等.东疆二叠纪镁铁—超镁铁岩体中辉石的成分特征及其对成岩和Ni-Cu成矿的指示[J].岩石学报,2015,31(8):2175-2192.
XUE Sheng-chao,QIN Ke-zhang,TANG Dong-mei,et al.Compositional Characteristics of Pyroxenes from Permian Mafic-ultramafic Complexes in Eastern Xinjiang,and Their Implications for Petrogenesis and Ni-Cu Mineralization[J].Acta Petrologica Sinica,2015,31(8):2175-2192.
[16]王博林,李文渊,张照伟,等.东天山香山中镁铁—超镁铁质岩体岩石学与矿物学特征:对成岩成矿过程的约束[J].中国地质,2017,44(6):1207-1233.
WANG Bo-lin,LI Wen-yuan,ZHANG Zhao-wei,et al.Petrological and Mineralogical Characteristics of the Xiangshanzhong Mafic-ultramafic Intrusion in Eastern Tianshan Mountains:Constrains on Rock-forming and Ore-forming Processes[J].Geology in China,2017,44(6):1207-1233.
[17]冯延清,钱壮志,徐 刚,等.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,2017,36(4):519-534.
FENG Yan-qing,QIAN Zhuang-zhi,XU Gang,et al.Rock-forming Mineral Features of Permian Mineralized Mafic-ultramafic Intrusions in East Tianshan Mountains and Their Implications for Intrusion Gene-ration[J].Acta Petrologica et Mineralogica,2017,36(4):519-534.
[18]柴凤梅.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,2006.
CHAI Feng-mei.Comparison of Petrologic Geoche-mistry of Three Mafic-ultramafic Intrusions Associated with Ni-Cu Sulfide Deposits in Northern Xinjiang[J].Beijing:China University of Geosciences,2006.
[19]孙 赫.东天山镁铁—超镁铁岩铜镍硫化物矿床通道式成矿机制与岩体含矿性评价研究[D].北京:中国科学院地质与地球物理研究所,2009.
SUN He.Ore-forming Mechanism in Conduit System and Ore-bearing Property Evaluation for Mafic-ultramafic Complex in Eastern Tianshan,Xinjiang[D].Beijing:Institute of Geology and Geophysics,Chinese Aca-demy of Sciences,2009.
[20]柯君君.东疆图拉尔根铜镍矿的岩石矿物学研究[D].北京:中国地质大学,2015.
KE Jun-jun.Research on Petrology and Mineralogy of Tulargen Ni-Cu Deposits,Eastern Xinjiang[D].Beijing:China University of Geosciences,2015.
[21]刘 欢.新疆东天山镁铁—超镁铁岩体含矿性评价研究[D].西安:长安大学,2016.
LIU Huan.Study on the Ore-bearing Potential Evaluation of Mafic-ultramafic Intrusions at Eastern Tian-shan of Xinjiang[D].Xi’an:Chang’an University,2016.
[22]秦克章,丁奎首,许英霞,等.东天山图拉尔根、白石泉铜镍钴矿床钴、镍赋存状态及原岩含矿性研究[J].矿床地质,2007,26(1):1-14.
QIN Ke-zhang,DING Kui-shou,XU Ying-xia,et al.Ore Potential of Protoliths and Modes of Co-Ni Occurrence in Tulargen and Baishiquan Cu-Ni-Co Deposits,East Tianshan,Xinjiang[J].Mineral Deposits,2007,26(1):1-14.
[23]三金柱,康 峰.新疆哈密市图拉尔根铜镍矿详查报告[R].哈密:新疆维吾尔自治区有色地质勘查局七○四队,2008.
SAN Jin-zhu,KANG Feng.Detailed Survey Report of Tula’ergen Cu-Ni Deposit in Hami,Xinjiang[R].Hami:No.704 Geological Team,Geological Exploration Bureau of Nonferrous Metals of Xinjiang Uygur Autonomous Region,2008.
[24]MORIMOTO N.Nomenclature of Pyroxenes[J].Mine-ralogy and Petrology,1988,39(1):55-76.
[25]余淳梅,郑建平,GRIFFIN W L.汉诺坝橄榄岩捕虏体的单斜辉石LAM-ICPMS分析及其岩石圈地幔演化意义[J].地球科学,2006,31(1):93-100.
YU Chun-mei,ZHENG Jian-ping,GRIFFIN W L.LAM-ICPMS Analysis on Clinopyroxenes of Peridotite Xenoliths from Hannuoba and Its Significance on Lithospheric Mantle Evolution[J].Earth Science,2006,31(1):93-100.
[26]刘艳荣,吕新彪,梅 微,等.新疆北山地区坡北镁铁—超镁铁岩体单斜辉石的矿物学特征及其地质意义[J].岩石矿物学杂志,2012,31(2):212-224.
LIU Yan-rong,LU Xin-biao,MEI Wei,et al.Minera-logy of Clinopyroxene from Pobei Mafic-ultrimafic Complex in Beishan Area,Xinjiang,and Its Geological Significance[J].Acta Petrologica et Mineralogica,2012,31(2):212-224.
[27]BREY G P,KOHLER T.Geothermobarometry in Four-phase Lherzolites Ⅱ:New Thermobarometers, and Practical Assessment of Existing Thermobarometers[J].Journal of Petrology,1990,31(6):1353-1378.
[28]BERTRAND P,MERCIER J C.The Mutual Solubility of Coexisting Ortho- and Clino-pyroxene:Toward an Absolute Geothermometer for the Natural System?[J].Earth and Planetary Science Letters,1985,76(1/2):109-122.
[29]PUTRIKA K D.Thermometers and Barometers for Volcanic Systems[J].Reviews in Mineralogy and Geochemistry,2008,69(1):61-120.
[30]柴凤梅,张招崇,毛景文,等.中天山白石泉镁铁—超镁铁质岩体岩石学与矿物学研究[J].岩石矿物学杂志,2006,25(1):1-12.
CHAI Feng-mei,ZHANG Zhao-chong,MAO Jing-wen,et al.Petrography and Mineralogy of Baishiquan Cu-Ni-bearing Mafic-ultramafic Intrusions in Xinjiang[J].Acta Petrologica et Mineralogica,2006,25(1):1-12.
[31]三金柱,惠卫东,秦克章,等.新疆哈密图拉尔根全岩矿化岩浆铜-镍-钴矿床地质特征及找矿方向[J].矿床地质,2007,26(3):307-316.
SAN Jin-zhu,HUI Wei-dong,QIN Ke-zhang,et al.Geological Characteristics of Tulargen Magmatic Cu-Ni-Co Deposit in Eastern Xinjiang and Its Exploration Direction[J].Mineral Deposits,2007,26(3):307-316.
[32]刘 壮,汤中立.新疆哈密图拉尔根Ni-Cu硫化物矿床成矿模式研究[J].甘肃地质,2010,19(3):1-8.
LIU Zhuang,TANG Zhong-li.Studies on the Metallogenic Model of Tulargen Ni-Cu Sulphide Deposits[J].Gansu Geology,2010,19(3):1-8.
[33]KUSHIRO I.Si-Al Relation in Clinopyroxenes from Igneous Rocks[J].Amercian Journal of Science,1960,258:518-551.
[34]邱家骧,廖群安.中国东部新生代玄武岩中单斜辉石巨晶的主要特征及成因信息[J].岩石矿物学杂志,1987,6(1):56-63.
QIU Jia-xiang,LIAO Qun-an.The Main Characteristics and Genetic Information of Clinopyroxene Megacrysts in Cenozoic Basalt of Eastern China[J].Acta Petrologica et Mineralogica,1987,6(1):56-63.
[35]张 旗.镁铁—超镁铁岩与威尔逊旋回[J].岩石学报,1992,8(2):168-176.
ZHANG Qi.The Mafic-ultramafic Rocks and Wilson Cycle[J].Acta Petrologica Sinica,1992,8(2):168-176.
[36]张志炳.东昆仑夏日哈木铜镍硫化物矿床矿物成因意义探讨[D].北京:中国地质大学,2016.
ZHANG Zhi-bing.Genetic Significances from Mineralogy of Xiarihamu Ni-Cu Sulfide Deposit,Eastern Kunlun Orogenic Belt[D].Beijing:China University of Geosciences,2016.
[37]SUN S S,MCDONOUGH W F.Chemical and Isoto-pic Systematics of Oceanic Basalts:Implications for Mantle Composition and Processes[J].Geological Society,London,Special Publications,1989,42:313-345.
[38]NIU Y,REGELOUS M,WENDT I J,et al.Geoche-mistry of Near-EPR Seamounts:Importance of Source vs.Process and the Origin of Enriched Mantle Component[J].Earth and Planetary Science Letters,2002,199(3/4):327-345.
[39]BARSDELL M,BERRY R F.Origin and Evolution of Primitive Island Arc Ankaramites from Western Epi,Vanuatu[J].Journal of Petrology,1990,31(3):747-777.
[40]VILLIGER S,ULMER P,MUNTENER O.Equilibrium and Fractional Crystallization Experiments at 0.7 GPa:The Effect of Pressure on Phase Relations and Liquid Compositions of Tholeiitic Magmas[J].Journal of Petrology,2007,48(1):159-184.
[41]WANG Y J,LV X B,LIU Y R.Petrogenesis and Ni-Cu-Co Sulfide Formation of Mafic Enclaves in Tula’ergen Mafic-ultramafic Intrusive Rocks,Eastern Tianshan,Northwest China:Implications for Liquid Immiscibility and Hydrothermal Remobilization of Platinum-group Elements[J].Economic Geology,2018,113(8):1795-1816.
[42]LOUCKS R R.Discrimination of Ophiolitic from Nonophiolitic Ultramafic-mafic Allochthons in Orogenic Belt by the Al/Ti Ratio in Clinopyroxene[J].Geology,1990,18(4):346-349.
[43]VUORINEN J H,HALENIUS U,WHITEHOUSE M J,et al.Compositional Variations(Major and Trace Elements)of Clinopyroxene and Ti-andradite from Pyroxenite,Ijolite and Nepheline Syenite,Alno Island,Sweden[J].Lithos,2005,81(1/2/3/4):55-77.
[44]王京彬,徐 新.新疆北部后碰撞构造演化与成矿[J].地质学报,2006,80(1):23-31.
WANG Jing-bin,XU Xin.Post-collisional Tectonic Evolution and Metallogenesis in Northern Xinjiang,China[J].Acta Geologica Sinica,2006,80(1):23-31.
[45]NORMAN M D.Melting and Metasomatism in the Continental Lithosphere:Laser Ablation ICPMS Analysis of Minerals in Spinel Lherzolites from Eastern Australia[J].Contributions to Mineralogy and Petrology,1998,130(3/4):240-255.
[46]陶 瑛,高振敏,罗泰义,等.云南金宝山超镁铁岩原始岩浆成分反演[J].岩石学报,2002,18(1):70-82.
TAO Ying,GAO Zhen-min,LUO Tai-yi,et al.Inversion of Primary Magma Composition for Jinbaoshan Ultramafic Intrusion,Yunnan[J].Acta Petrologica Sinica,2002,18(1):70-82.
[47]BURNS R G.Mineralogical Applications of Crystal Field Theory[M].Cambridge:Cambridge University Press,1970.
[48]CAMPBELL I H,BORLEY G D.The Geochemistry of Pyroxenes from the Lower Layered Series of the Jimberlana Intrusion,Western Australia[J].Contributions to Mineralogy and Petrology,1974,47(4):281-297.
[49]王于健,吕新彪,刘艳荣,等.新疆图拉尔根基性-超基性岩体中基性包体岩石地球化学特征及其成岩过程[J].岩石矿物学杂志,2013,32(4):417-430.
WANG Yu-jian,LU Xin-biao,LIU Yan-rong,et al.Geochemistry and Petrogenesis of Mafic Enclaves in Tulargen Mafic-ultramafic Complex,Xinjiang[J].Acta Petrologica et Mineralogica,2013,32(4):417-430.
[50]NALDRETT A J.Magma Sulfide Deposits Geology,Geochemistry and Exploration[M].New York:Springer,2004.
[51]凌锦兰.柴周缘镁铁质—超镁铁质岩体与镍矿床成因研究[D].西安:长安大学,2014.
LING Jin-lan.Petrogenesis of Mafic-ultramafic Intrusions and Minerogenesis of Nickel Sulfide Deposit in the Periphery of Qaidam Block,Qinghai,China[D].Xi’an:Chang’an University,2014.
[52]IRVINE T N.Crystallization Sequences of the Muskox Intrusion and Other Layered Intrusions:Ⅱ.Origin of Chromitite Layers and Similar Deposits of Other Magmatic Ores[J].Geochimica et Cosmochimica Acta,1975,39(6/7):991-1020.

Memo

Memo:
-
Last Update: 2019-07-11