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地质学报  2009 

西藏驱龙巨型斑岩CuMo矿床的富S、高氧化性含矿岩浆――来自岩浆成因硬石膏的证据

, PP. 1860-1868

Keywords: 岩浆硬石膏,磷灰石,富S岩浆,氧逸度,驱龙CuMo矿床,冈底斯,西藏

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Abstract:

西藏冈底斯成矿带上的驱龙巨型斑岩CuMo矿床以发育大量的硬石膏为特征。详细的岩相学研究发现:驱龙矿床不仅发育热液脉状的硬石膏,含矿斑岩中还产出岩浆成因硬石膏,这在国内系首次报道。观察表明,在岩浆演化早期的花岗闪长岩、黑云母二长花岗岩中,岩浆硬石膏以矿物包体的形式产于斜长石、石英中;在主成矿期的二长花岗斑岩、花岗闪长斑岩中,岩浆硬石膏以矿物包体产于斜长石斑晶中,局部以斑晶形式产出,并伴有富S的磷灰石(SO??3?含量为0.11%~0.44%)、磁铁矿发育。后期热液活动也形成了大量的硬石膏±石英+硫化物脉,是矿区主要的矿化类型之一。电子探针分析结果显示,后期的热液硬石膏与岩浆硬石膏相比,在微量成分上明显富集Sr(分别为0.24%和0.03%),可能是由于在岩浆热液演化过程中,Sr的不相容性或者/以及粘土化蚀变造成的。岩浆硬石膏以及与之共生的富S磷灰石的出现,明确指示驱龙矿床成矿岩浆具有富S、高氧逸度的特征;同时也为研究S在斑岩型矿床岩浆演化过程中的状态、行为,提供了很好的研究对象。

References

[1]  丁林.岳雅慧.蔡福龙.徐晓霞.张清海.来庆洲 西藏拉萨地块高镁超钾质火山岩及对南北向裂谷形成时间和切割深度的制约 [J].-地质学报2006(9)
[2]  侯增谦 斑岩Cu-Mo-Au矿床:新认识与新进展 [J].-地学前缘2004(1)
[3]  侯增谦.高永丰.孟祥金.曲晓明.黄卫 西藏冈底斯中新世斑岩铜矿带:埃达克质斑岩成因与构造控制 [J].-岩石学报2004(2)
[4]  侯增谦.潘桂棠.王安建.莫宣学.田世洪.孙晓明.丁林.王二七.高永丰.谢玉玲.曾普胜.秦克章.许继峰.曲晓明.杨志明.杨竹森.费红彩.孟祥金.李振清 青藏高原碰撞造山带:Ⅱ.晚碰撞转换成矿作用 [J].-矿床地质2006(5)
[5]  侯增谦.曲晓明.杨竹森.孟祥金.李振清.杨志明.郑绵平.郑有业.聂凤军.高永丰.江思宏.李光明 青藏高原碰撞造山带:Ⅲ. 后碰撞伸展成矿作用 [J].-矿床地质2006(6)
[6]  侯增谦,杨志明,中国大陆环境斑岩型矿床:基本地质特征、岩浆热液系统与成矿概念模型,地质学报,2009(12).
[7]  肖波.李光明.秦克章.李金祥.赵俊兴.刘小兵.夏代祥.吴兴炳.彭震威 冈底斯驱龙斑岩铜钼矿床的岩浆侵位中心和矿化中心:破裂裂隙和矿化强度证据 [J].-矿床地质2008(2)
[8]  杨志明,西藏驱龙超大型斑岩铜矿床--岩浆作用与矿床成因,北京:中国地质科学院,2008.
[9]  姚春亮.陆建军.郭维民 江西省铜厂斑岩铜矿磷灰石世代和成分特征研究 [J].-矿物学报2007(1)
[10]  张德会.张文淮.许国建.岩浆热液出溶和演化对斑岩成矿系统金属成矿的制约[J].地学前缘,2001(3)
[11]  郑有业.薛迎喜.程力军.樊子珲.高顺宝 西藏驱龙超大型斑岩铜(钼)矿床:发现、特征及意义 [J].-地球科学-中国地质大学学报2004(1)
[12]  朱永峰,硫在岩浆熔体中的溶解行为综述,地质科技情报,1998(2).
[13]  Audétat A,Pettkeb T,Dolejs D,Magmatic anhydrite and calcite in the ore-forming quartz-monzodiorite magma at Santa Rita,New Mexico(USA):genetic constraints on porphyry-Cu mineralization,Lithos,2004.
[14]  Carroll M R,Rutherford M J,Sulfide and sulfate saturation in hydrous silicate melts.Proc.15th Lunar Planet,Sci Conf J Geophys Res,1985.
[15]  Carroll M R,Rutherford M J,The stability of igneous anhydrite:experimental results and implications for sulfur behavior in the 1982 El Chichon trachyandesite and other evolved magmas,Journal of Petrology,1987.
[16]  Clark A H,Are outsize porphyry copper deposits either anatomically or environmentally distinctive?,Society of Economic Geologist Special Publication,1993.
[17]  Coleman M,Hodges K,Evidence for Tibetan plateau uplift before 14 Myr ago from a new minimum age for east-west extension,Nature,1995.
[18]  Cooke D R,Hollings P,Walshe J L,Giant porphyry deposits:characteristics,distribution,and tectonic controls,Economic Geology,2005.
[19]  Core D P,Kesler S E,Essene E J,Unusually Cu-rich magmas associated with giant porphyry copper deposits:evidence from Bingham,Utah,Geology,2006(1).
[20]  Hou Z Q,Gao Y F,Qu X M,Origin of adakitic intrusives generated during mid-Miocene East-west extension in southern Tibet,Earth and Planetary Science Letters,2004.
[21]  Imai A,Metallogenesis of porphyry Cu deposits of the western Luzon arc,Philippines:K-Ar ages,SO_3?contents of microphenocrystic apatite and significance of intrusive rocks,Resource Geology,2002(2).
[22]  Imai A,Variation of Cl and SO_3 contents of microphenocrystic apatite in intermediate to silicic igneous rocks of Cenozoic Japanese island arcs.Implications for porphyry Cu metallogenesis in the Western Pacific Island arcs,Resource Geology,2004(3).
[23]  Ishihara S,Granitoid series and mineralization in the Circum-Pacific Phanerozoic granitic belts,Resource Geology,1998.
[24]  Scaillet B,Clemente B,Evans B W,Redox control of sulfur degassing in silicic magmas,Journal of Geophysical Research,1998.
[25]  Stern C R,Skewes M A,Origin of giant Miocene and Pliocene Cu-Mo deposits in central Chile:role of ridge subduction,decreased subduction angle,subduction erosion,crustal thickening and long-lived,batholith sized,open-system magma chambers,Adelaide,Australia,Porter Geoconsultancy Publishing,2005.
[26]  Stern C R,Funk J A,Skewes M A,Magmatic anhydrite in plutonic rocks at the El Teniente Cu-Mo deposit,Chile,and the role of sulfur-and copper-rich magmas in its formation,Economic Geology,2007.
[27]  Titely S R,Beane R E,Porphyry copper deposits,1981.
[28]  Tosdal R M,Richards J P,Magmatic and structural controls on the development of porphyry Cu±Mo±Au deposits,Reviews in Economic Geology,2001.
[29]  Williams H,Turner S,Kelley S,Harris N,Age of composition of dikes in southern Tibet:new constraints on the timing of east-west extension and its relationship to post collisional magmatism,Geology,2001.
[30]  西藏巨龙铜业有限公司,西藏自治区墨竹工卡县驱龙矿区铜多金属矿勘探报告,2008.
[31]  李光明.李金祥.秦克章.张天平.肖波 西藏班公湖带多不杂超大型富金斑岩铜矿的高温高盐高氧化成矿流体:流体包裹体证据 [J].-岩石学报2007(5)
[32]  李金祥.秦克章.李光明 富金斑岩型铜矿床的基本特征、成矿物质来源与成矿高氧化岩浆-流体演化 [J].-岩石学报2006(3)
[33]  李金祥,秦克章,李光明,杨列坤,冈底斯中段尼木斑岩铜矿田的K-Ar、~(40)Ar/~(39)Ar年龄对岩浆-热液系统演化和成矿构造背景的制约,岩石学报,2007(5).
[34]  孟祥金.侯增谦.高永丰.黄卫.曲晓明.屈文俊 西藏冈底斯成矿带驱龙铜矿Re-Os年龄及成矿学意义 [J].-地质论评2003(6)
[35]  秦克章,试论大型-超大型铜矿床的主要控制因素,地学探索,1993(8).
[36]  芮宗瑶,黄崇轲,齐国明,徐珏,张洪涛,中国斑岩铜(钼)矿床,北京:地质出版社,1984.
[37]  芮宗瑶.侯增谦.曲晓明.张立生.王龙生.刘玉琳 冈底斯斑岩铜矿成矿时代及青藏高原隆升 [J].-矿床地质2003(3)
[38]  王亮亮.莫宣学.李冰.董国臣.赵志丹 西藏驱龙斑岩铜矿含矿斑岩的年代学与地球化学 [J].-岩石学报2006(4)
[39]  王之田,秦克章,张守林,大型铜矿地质与找矿,北京:冶金工业出版社,1994.
[40]  Clemente B,Scaillet B,Pichavant M,The solubility of sulfur in hydrous rhyolitic melts,Journal of Petrology,2004.
[41]  Cloos M,Bubbling magma chambers,cupolas,and porphyry copper deposits,International Geology Review,2001.
[42]  Jugo P J,Robert W L,Jeremy P R,An experimental study of the sulfur content in basaltic melts saturated with immiscible sulfide or sulfate liquids at 1300℃ and 1.0 GPa,Journal of Petrology,2005.
[43]  Jugo P J,Sulfur content at sulfide saturation in oxidized magmas,Geology,2009(5).
[44]  Leslie L B,Malcolm J R,Crystallisation of anhydrite-bearing magmas,1996.
[45]  Luhr J F,Experimental phase relations of water and sulfur-saturated arc magmas and the 1982 eruptions of El Chichon Volcano,Journal of Petrology,1990.
[46]  Matthews S J,Moncrieff D H S,Carroll M R,Empirical calibration of the sulfur valence oxygen barometer from natural and experimental glasses,method and applications,Mineralogical Magazine,1999.
[47]  Oyarzún R,Múrquez A,Lillo J,Giant versus small copper deposits of Cenozoic age in northern Chile:adakite versus normal calc-alkaline magmatism,Mineralium Deposita,2001.
[48]  Qin K Z,Ishihara S,On the possibility of porphyry copper mineralization Japanese Islands,International Geology Review,1998(6).
[49]  Qin K Z,Tosdal R,Li G M,Zhang Q,Li J L,Formation of the Miocene porphyry Cu(-Mo-Au) deposits in the Gangdese arc,southern Tibet,in a transitional tectonic setting,北京:地质出版社,2005.

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