全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
矿床地质  2005 

新疆西南天山萨瓦亚尔顿金矿床地质特征及成矿作用

Keywords: 地质学,成矿作用,含碳岩系,脆_韧性剪切带,萨瓦亚尔顿,新疆

Full-Text   Cite this paper   Add to My Lib

Abstract:

根据大量的实际工作,并结合前人的研究成果,详细介绍了萨瓦亚尔顿金矿床的成矿地质背景和矿床地质特征,通过流体包裹体和同位素研究,对萨瓦亚尔顿金矿的成矿作用进行了深入讨论。研究结果表明,流体包裹体类型主要为气液两相包裹体,其次为富液相包裹体、富气相包裹体、含NaCl子晶多相包裹体和含液相CO2的三相包裹体。成矿流体为中低温(78~355℃)、中低盐度〔w(NaCleq)2.57%~22.10%〕的H2O-NaCl-CO2-CH4体系。硫化物的δ34S值变化于-3.0‰~+2.61‰,平均值为0.07‰,暗示硫来自地幔或与地幔相关的岩浆。白云石和菱铁矿的δ13CPDB值为-5.4‰~-0.6‰,表明成矿物质来自地幔及海相碳酸盐岩。氢和氧同位素显示成矿流体主要来源于大气降水,并混合少量岩浆水。萨瓦亚尔顿金矿与乌兹别克斯坦穆龙套金矿和吉尔吉斯斯坦库姆托尔金矿具有相似性,但它在浅成中_低温条件下成矿,且金、锑共生。物理化学条件和流体成分的改变、水_岩交换作用及流体的不混溶作用在成矿过程中起了重要作用。

References

[1]  Long X R, Zheng M H, Zhang S T, et al.1998.Studies of liquid inclusions about Muruntau type gold deposits in the Sawayaerdun, Xinjiang[J]. Mineral Deposits, 17(Supp.):973~976 (in Chinese).
[2]  Ma L F. 2002. Geological atlas of China[M]. Beijing:Geol. Pub. House. 342~343 (in Chinese).
[3]  Ma T L, Sun L Q, Cheng X H, et al. 1999.Tectonic characteristics of ore area in the Sawayaerdun gold deposit in Southwest Tianshan, Xinjiang[A]. In:Deng N G and Lei W Z, ed. Collected works of continent structure and deformation in intracontinent and forums about geomechanics in the 6th sessions[C]. Beijing:Seismological Press. 132~135 (in Chinese).
[4]  Mao J W and Li Y Q.2001.Fluid inclusions of the Dongping gold telluride deposit in Hebei Province, China:Involvement of mantle fluid metallogenesis[J]. Mineral Deposits, 20(1):23~36 (in Chinese with English abstract).
[5]  Mao J W, Wang Y T, Ding T P, et al. 2002b. Dashuiguo tellurium deposit in Sichuan Province, China:S, C, O, and H isotope data and their implications on hydrothermal mineralization[J]. Resource Geology, 52(1):15~23.
[6]  Mao J W, Konopelko D, Seltmann R, et al. 2004. Post-collisional age of the Kumtor gold deposit and timing of Hercynian events in the Tien Shan, Kyrgyzstan[J]. Econ. Geol., 99:1771~1780.
[7]  He W D.2000.Geological characteristics and genesis of the Sawayaerdun gold-antimony deposit[A]. In:Wang F T, ed. Collections of Fourth forum about geology and mineral resources in Tianshan[C]. Urumchi:Xinjiang Pepole\\'s Pub. House. 290~297 (in Chinese).
[8]  Hedenquist J W and Lowenstern J B. 1994. The role of magma in the formation of hydrothermal ore deposits[J]. Nature, 370:519~527.
[9]  Hoefs J. 1987. Stable isotope geochemistry[M]. 3rd ed. Berlin:Spring Verlag. 1~250.
[10]  更多...
[11]  Hu S L, Man F S, Ni S B, et al.2000.Study on the metallogenetic times of the Chahansala Sb-Ag ore belt[J]. Seismology and Geology, 22(Supp.):51~62 (in Chinese with English abstract).
[12]  Hu S L, Man F S, Ni S B, et al. 2002. Timing of the host strata of Chahasala Sb-Ag ore belt[J]. Acta Petrologica Sinica, 18(4):593~600 (in Chinese with English abstract).
[13]  Ivanov S M, Ansdell K M and Melrose D L.2000.Ore texture and stable isotope constraints on ore deposition mechanisms at the Kumtor lode gold deposit[A]. In:Bucci L A and Mair J L, eds. Gold in 2000[C]. Littleton, Society of Economic Geologists, Poster Session Extended Abstracts Volume. 47~52.
[14]  Jiang C Y, Mu Y M, Bai K Y, et al.1999.Chronology, petrology, geochemistry and tectonic environment of granitoids in the southern Tianshan Mountain, western China[J].Acta Petrologica Sinica, 15(2):298~308 (in Chinese with English abstract).
[15]  Kempe U, Belyatsky B V, Krymsky R S, et al.2001.Sm-Nd and Sr isotope systematics of scheelite from the giant Au (-W) deposit Muruntau (Uzbekistan):Implications for the age and sources of Au mineralization[J]. Mineralium Deposita, 36:379~392.
[16]  Kostitsyn Y A.1993.Rb-Sr isotope studies in the Muruntau deposit:Dating of ore veins by the isochron technique[J]. Geokhimiya, 9:1308~1318(in Russian).
[17]  Kostitsyn Y A. 1996. Rb-Sr isotopic study of the Muruntau deposit:Magmatism, metamorphism, and mineralization[J]. Geochemistry International, 34:1009~1023.
[18]  Kotov N V and Poritskaya L G. 1992. The Muruntau gold deposit:Its geologic structure, metasomatic mineral associations and origin[J]. International Geology Review, 34(1):77~87.
[19]  Li X S and Luo W D.1997.Geological character of Sawayaerdun gold ore in Xinjiang:The first one of Muruntau type gold ore in China[J]. Acta Geologica Gansu, 6(1):62~66 (in Chinese with English abstract).
[20]  Li Y G, Zhai M G, Miao L C, et al. 2004. Ore-forming fluids of the Anjiayingzi gold deposit in Chifeng region, Inner Mongolia[J]. Acta Petrologica Sinica, 20(4):961~968 (in Chinese with English abstract).
[21]  Liu B and Shen K.1999. Thermodynamics of fluid inclusions[M]. Beijing:Geol. Pub. House. 1~290 (in Chinese with English abstract).
[22]  Liu B P, Wang Z Q, Zhang C H, et al. 1996. Tectonic framework and evolution in Southwest Tianshan Mountains, China[M]. Wuhan:Publishing House of China University of Geoscience. 1~118 (in Chinese with English abstract).
[23]  Liu D Q, Tang Y L and Zhou R H.1998.The direction of search for minerals of the Muruntau-type gold deposits in Xinjiang[J]. Gold Science and Technology, 6(1):18~23 (in Chinese with English abstract).
[24]  Liu J J, Zheng M H, Long X R, et al.1999.Geological epoch of layer locating ores redefined precisely and significance of Sawayaerdun gold deposit in Xinjiang[J]. Chinese Science Bulletin, 44(6):653~656 (in Chinese).
[25]  Liu J J, Long X R, Zheng M H, et al. 2002a. The metallogentic age of Sawayaerdun gold deposit in southwestern Tianshan Mountains, Xinjiang[J]. Journal of Mineralogy and Petrology, 22(3):19~23 (in Chinese with English abstract).
[26]  Liu J J, Zheng M H, Long X R, et al. 2002b. Metallogenic characteristics of Sawayaerdun gold deposit in Xinjiang, and their similarities to and differences from those of Muruntau-type gold deposits[J]. Acta Mineralogica Sinca, 22(1):54~61 (in Chinese with English abstract).
[27]  Liu J J, He M Q, Li Z M, et al. 2004. Oxygen and carbon isotopic geochemistry of Baiyangping silver-copper polymetallic ore concentration area in Lanping basin of Yunnan Province and its significance[J]. Mineral Deposits, 23(1):1~10 (in Chinese with English abstract).
[28]  Liu J M, Liu J J and Gu X X.1997.Basin fluids and their related ore deposits[J]. Acta Petrologica et Mineralogica, 16(4):341~352(in Chinese with English abstract).
[29]  Mao J W, Han C M, Wang Y T, et al. 2002a. Geological characteristics, metallogenic model and criteria for exploration of the large South Tianshan gold metallogenic belt in Central Asia[J]. Geological Bulletin of China, 21:858~868 (in Chinese with English abstract).
[30]  Anikin. 1991. Geology and mineralogical-geochemical specific features of Au-Te-rare-metal mineralization in Vendian carbonaceous sediments of the Kumtor ore filed, Middle Tien Shan[D]. Phd (Geol. Mineral.) Thesis, Bishkek Polytechnical Institute. 1~100.
[31]  Anikin. 1991. Geology and mineralogical-geochemical specific features of Au-Te-rare-metal mineralization in Vendian carbonaceous sediments of the Kumtor ore filed, Middle Tien Shan[D]. Phd (Geol. Mineral.) Thesis, Bishkek Polytechnical Institute. 1~100.
[32]  Bodnar R J. 1994. Synthetic fluid in natural quartz. VII. The system H2O-NaCl:Experimental determination of the halite liquidus and isochors for a 40 wt% NaCl solution[J]. Geochimica et Cosmochimica Acta, 58:1053~1063.
[33]  Brathwaite R L and Faure K. 2002. The Waihi epithermal gold-silver-base metal sulfide-quartz vein system, New Zealand:Temperature and salinity controls on electrum and sulfide deposition[J]. Econ. Geol., 97:269~290.
[34]  Chen B L.2000.Comparison of geological and geochemical characteristics between gold deposits of different types related with ductile shear zones[J]. Geology Geochemistry, 28:24~30 (in Chinese with English abstract).
[35]  Chen F W and Li H Q.2003.Metallogenic chronology of the Sawayaerdun gold-antimony deposit in Xinjiang[J]. Acta Geoscientica Sinica, 24(6):563~567 (in Chinese with English abstract).
[36]  Chen H Y, Chen Y J, Ni P, et al. 2004. Fluid inclusion study of the Sawayaerdun Au deposit in southern Tianshan, China:Implication for ore genesis and exploration[J]. J. Mineral Petrol., 24(3):46~54 (in Chinese with English abstract).
[37]  Chen Z F. 2002. Metallogenic conditions and prospecting target of supra large-gold deposits in south Tianshan of Xinjiang and neighboring areas[J]. Xinjiang Geology, 20(3):229~323 (in Chinese with English abstract).
[38]  Chen X H, Ma T L, Sun L Q, et al.2001.The characteristics of rock magnetic fabric and its relationship to gold mineralization in Sawayaerdun gold deposit, Xinjiang[J]. Journal of Geomechanics, 7(3):208~216 (in Chinese with English abstract).
[39]  China Geological Survey.2003.Study of the emphases electorate in the survey and evaluation of mineral resources in the main metallogenic prospect province of China[M]. Beijing:Geol. Pub. House. 156 (in Chinese).
[40]  Dai Z X, Bai Y, Wu C G, et al.2001.Contrast study of the prospecting potential of copper-gold ore between west China and its adjacent area[J]. Beijing:Seismic Press. 73 (in Chinese).
[41]  Drew L J, Berger B W and Kurbanov N K. 1996. Geology and structural evolution of the Muruntau gold deposit, Kyzylkum Desert, Uzbekistan[J]. Ore Geology Reviews, 11:175~196.
[42]  Edward J.1998.Mikucki hydrothermal transport and depositional processes in Archean lode-gold systems:A review[J]. Ore Geology Reviews, 13:307~321.
[43]  Friedman I and O\\'Neil J R. 1977. Complication of stable isotope fractionation factors of geochemical interest in data of geochemistry[A]. In:Fleischer M, ed. Geological Professional Paper[C].U. S. Geological Survey. 6th ed.440.
[44]  Gao J, Xiao X, Tang Y, et al. 1995. Preliminary research on the tectonostratigraphy in the Southwestern Tianshan Mountains[J]. Journal of Stratigraphy, 19:122~128 (in Chinese with English abstract).
[45]  Graupner T, Kempe U, Spooner E T C, et al.2001.Microthermometric, Laser Raman spectroscopic, and volatile-ion chromatographic analysis of hydrothermal fluids in the Paleozoic Muruntau Au-bearing quartz vein ore field, Uzbekistan[J]. Econ. Geol., 96:1~23.
[46]  Han B F, Wang X C, He G Q, et al.1999.Discovery of mantle and lower crust xenoliths from Early Cretaceous volcanic rocks of southwestern Tianshan, Xinjiang[J]. Chinese Science Bulletin, 3:1119~1123.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133