柴凤梅;夏芳;陈斌;卢鸿飞;

• 1:新疆大学地质与勘查工程学院
• 2:北京大学地球与空间科学学院
• 3:新疆维吾尔自治区地质矿产勘查开发局第六地质大队

摘要(Abstract)：

坡一镁铁-超镁铁质岩体为新疆北山地区一重要的含铜镍硫化物的侵入体.该岩体主要由橄榄岩、辉石岩和辉长岩组成.铬铁矿主要以副矿物形式现于橄榄岩中.它们以自形-半自形以及它形存在于橄榄石颗粒间或其内,部分为辉石包裹,偶见其包裹橄榄石.结合电子探针研究,认为坡一岩体母岩浆是来源于软流圈地幔或者与地幔柱有关的基性岩浆,原生岩浆经过了两个阶段的演化形成了目前的坡一岩体.包裹于橄榄石中的铬铁矿为岩浆早期深部岩浆房中结晶的产物,其他形式存在的铬铁矿为富含橄榄石和铬铁矿"晶粥"的演化岩浆结晶的结果.铬铁矿的结晶对坡一铜镍矿床的形成具有重要的意义.

关键词(KeyWords)： 镁铁一超镁铁质岩;铬铁矿;北山;坡一

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(40863001、40973028、40972069);; 新疆维吾尔自治区自然科学基金项目(2010211A08);; 新疆大学“天山学者”特聘教授启动经费项目

作者(Author): 柴凤梅;夏芳;陈斌;卢鸿飞;

Email:

DOI:

参考文献(References)：

• [1]Stowe C W.Evolution of Chromium Ore Fields[J].A Hutchinson Ross Publication,1987,1-340.
• [2]Dick H J B,Bullen T.Chromain spinel as apetrogeneticindicatorin abyssal and alpine-type peridotites and spatiallyasso-ciated lavas[J].Contributions to Mineralogy and Petrology,1984,86:54-76.
• [3]马言胜,陶琰,钟宏,等.云南金宝山含铂钯超镁铁质侵入体中铬铁矿的成因研究[J].矿物学报,2007,27(4):342-350.
• [4]胡旺亮,周治新.北山笔架山地区基性-超基性岩带地物化特征及含矿性研究[J].新疆地质,1992,10(2):167-175.
• [5]高怀忠.新疆坡北基性一超基性岩带1号岩体地质特征及其含矿性研究[J].中国地质大学学报,1992,17(4):391-401.
• [6]李鸿儒.新疆坡北基性超基性岩带控岩构造特征及成矿专属性[J].中国区域地质,1994,(3):227-233.
• [7]李华芹,陈富文,梅玉萍,等.新疆坡北基性-超基性岩带I号岩体Sm-Nd和SHRIMP U-Pb同位素年龄及其地质意义[J].矿床地质,2006,25(4):450-463.
• [8]姜常义,程松林,叶书锋,等.新疆北山地区中坡山北镁铁质岩体岩石地球化学与岩石成因[J].岩石学报,2006,22(1):115-126.
• [9]杨甲全,钟莉,邓刚.北山地区坡北1号、l0号基性-超基性岩体成矿预测及找矿方向[J].新疆地质,2002,20(3):214-218.
• [10]苏本勋,秦克章,孙赫,等.新疆北山红石山镁铁-超镁铁岩体的岩石矿物学特征:对同化混染和结晶分异过程的启示[J].岩石学报,2009,25(4):873-887.
• [11]苏本勋,秦克章,孙赫,等.新疆北山地区旋窝岭镁铁-超镁铁岩体的年代学、岩石矿物学和地球化学研究[J].岩石学报,2010,26(11):3283-3294.
• [12]孙燕,肖渊甫,王道永,等.新疆北山坡北基性-超基性杂岩特征及成矿远景[J].成都理工大学学报,2009,36(4):402-407.
• [13]闫军武,郭燕,伊永国.新疆北山坡十岩浆铜镍硫化物矿床特征及勘查方法[J].西部探矿工程,2010,10:178-180.
• [14]韩宝福,季建清,宋彪,等.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,2004,49(22):2324-2328.
• [15]毛景文,杨建民,屈文俊,等.新疆黄山东铜镍硫化物矿床Re-Os同位素测定及其地球动力学意义[J].矿床地质,2002,21(4):323-330.
• [16]唐冬梅,秦克章,孙赫,等.天宇铜镍矿床的岩相学、锆石U-Pb年代学、地球化学特征:对东疆镁铁-超镁铁质岩体源区和成因的制约[J].岩石学报,2009,25(4):817-831.
• [17]肖庆华,秦克章,唐冬梅,等.新疆哈密香山西铜镍-钛铁矿床系同源岩浆分异演化产物-矿相学、锆石U-Pb年代学及地球化学证据[J].岩石学报,2010,26(2):503-522.
• [18]孙涛,钱壮志,汤中立,等.新疆葫芦铜镍矿床锆石U-Pb年代学、铂族元素地球化学特征及其地质意义[J].岩石学报,2010,26(11):3339-3349.
• [19]索科洛夫.乌拉尔铬铁矿[M].朱福湘,李秉伦,袁启林,等译.北京:地质出版社,1958.
• [20]Melchert,Crumw,Simong.Petrogenesis of the ophiolitic giant chromite deposits of Kempirsai,Kazakhst sn:a study of sol id and fluid inclusions in Chromite[J].Journal of Petrology,1997,38(10):1419-1458.
• [21]Ballhaus C.Origin of podiform chromite deposits by magma mingling[J].Earth and Planet Science Letters,1998,156:185-193.
• [22]Irvine T N.Chromian spinel as a petrogenetic indicator Part1,theory[J].Canadian Journal of Earth Science,1965,2:648-672.
• [23]Fabries J.Spinel-Olivine geothermometry in peridotites from ultramafic-complexes[J].Comtributions to Mineralogy and Petrology,1979,69:329-336.
• [24]Reodder P,Campbell I,Jamieson H.A re-evaluation of the olivine spinel geothermometer[J].Contributions to Mineralogy and Petrology,1979,68:325-334.
• [25]Roeder P L,Emslie R F.Olivine-liquid equilibrium[J].Contributions to Mineralogy and Petrology,1970,29:275-289.
• [26]Li C S,Xu Z H,De Wall S A,et al.Compositional variations of olivine from the Jinchuan Ni-Cu sulfide deposit,western China:implications for ore genesis[J].Mineralium deposita,2004,39:159-172.
• [27]Allen J F,Sack R O,Batiza R.Cr-rich spinels as petrogenetic indicators:MORB-type lavas from the Lamount seamount chain,eastern Pacific[J].American Mineralogy,1988,73:741-753.
• [28]Barnes S J,Kunilov V Y.Spinels and Mg-ilmenites from the Noril’sk and Talnakh intrusions and other mafic rocks of the Siberian flood basalt province[J].Economic Geology,2000,95:1701-1717.
• [29]Zhou M F,Lightfoot P C,Keays R R,et al.Petrogenetic significance of chromian spinels from the Sudbury Igneous Complex,Ontario,Canada[J].Canadian Journal of Earth Sciences,1997,34:1405-1419.
• [30]Barnes S J,Tang Z L.Chrome spinels from the Jinchuan Ni Cu sulphide deposit,Gansu Province,People’s Republic of China[J].Economic Geology,1999,94:343-356.
• [31]Wang Y,Zhou M F,Zhao D G.Mineral chemistry of chromite from the Permian Jinbaoshan Pt–Pd–sulphide-bearing ultramafic intrusion in SW China with petrogenetic implications[J].Lithos,2005.83:47-66.
• [32]Barnes S J,Roeder P L.The range of spinel compositions in terrestrial mafic and ultramafic rocks[J].Journal of Petrology,2001,42:2279-2302.
• [33]张炜斌,张东阳,张招崇,等.南天山满大勒克蛇绿岩铬铁矿矿物学特征及其意义[J].岩石矿物学杂志,2011,30(2):243-258.
• [34]Keays R R.The role of komatiitic and picritic magmatism and S-saturation in the formation of ore deposits[J].Lithos,1995,134:1-18.
• [35]Naldrett A J.World-class Ni-Cu-PGE deposits:key factors in their genesis[J].Mineralium Deposita,1999,34:227-240.
• [36]柴凤梅,张招崇,毛景文,等.岩浆型Ni-Cu-PGE硫化物矿床研究的几个问题探讨[J].矿床地质,2005,24(3):325-335.
• [37]Haughton D R,Roeder P L,Skinner B J.Solubility of sulfur in mafic magmas[J].Economic Geology,1974,69:451-467.