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...
地质学报  2009 

金川铜镍硫化物矿床岩浆通道型矿体地质地球化学特征

, PP. 1515-1525

Keywords: 金川矿床岩浆通道硫化物结晶分异找矿

Full-Text   Cite this paper   Add to My Lib

Abstract:

金川铜镍硫化物矿床6行富铜(铂族)矿体曾因Cu、Pt、Pd等含量明显高于相邻其它矿体而被认为是岩浆期后热液叠加作用的产物,研究发现,空间上该矿体受断层构造控制,在矿石组构、矿物组成和硫同位素组成方面与相邻岩浆融离型1号矿体一致,显示了该矿体岩浆成矿作用的特征。在元素地球化学方面,6行富铜(铂族)矿体的Cu、Ni、Pt、Pd含量及Cu/Ni比值明显高于1号主矿体,而Os、Ir、Rh、Ru却明显低于后者,同时,前者相对富含LREE,轻、重稀土分异程度高于后者。根据硫化物结晶分异过程中金属元素分配规律及稀土元素特征,阐明了6行富铜(铂族)矿体为岩浆通道型矿体,是岩浆硫化物晚期结晶的产物。矿区中西部存在的Cu、Ni、Pt、Pd、Au等含量高,而Os、Ir、Rh、Ru含量低的部位,是寻找岩浆通道型矿体的有利部位。

References

[1]  Fleet,ME,Crocket,JH,Liu,M,Stone,WE. Laboratory partitioning of platinum-group elements (PGE) and gold with application to magmatic sulfide-PGE deposits.Lithos,1999,47:127~142.
[2]  Fleet ME,Stone WE. Partitioning of platinum-group elements inthe Fe-Ni-S system and their fractionation in nature.Geochimica et Cosmochimica Acta,1991,55:245-253.
[3]  Li,C.,Naldrett,A. J.,Ripley,E. M. Critical factors for the formation of a nickel-copper deposit in an evolved magma system:lessons from a comparison of the pants lake and Voisey’s Bay sulfide occurrences in Labrador.Canada, Mineralium Deposita.2001,36:85~92.
[4]  X-Y Song,M-F Zhou,Y Wang,L Qi. Role of crustal contamination in formation of the Jinchuan intrusion and its world-class Ni-Cu-(PGE) sulfide deposit, NW China.Int Geol Rev,2006,48:1113-1133.
[5]  Barnes S J,Maier WD. The fraction of Ni,Cu and the noblemetals in silicate and sulfide liquids.Keays R R;Lesher CM;Lightfoot P C,et al.ed.Dynamic Processes in MagmaticOre Deposits and Their Application in Mineral Exploration.Geological Association of Canada,Short Course,1999,13:69~106.
[6]  Song Xieyan,Keays R R,Zhou M F,Qi L,Ihlenfeld C,Xiao J F. Siderophile and chalcophile elemental constraints on theorigin of the Jinchuan Ni-Cu-(PGE)sulfide deposit,NWChina.Geochi mica et Cosmochi mica Acta.2009,73:404~424.
[7]  梁有彬,朱文凤,宋国仁,宋恕夏. 金川铜镍型铂族元素矿床地质地球化学特征[J]矿产与地质, 1997,(01).
[8]  宋谢炎,李士彬,王玉山,把多恒,陈烈猛. 含矿岩浆通道对于岩浆铜镍硫化物矿床找矿工作的意义[J]矿物岩石地球化学通报, 2005,(04).
[9]  杨合群. 金川铜镍矿床硫同位素地球化学[J]西北地质, 1989,(02).
[10]  Chai G,Naldrett A J. Characteristics of Ni-Cu-PGEmineralization and genesis of the Jinchuan deposit,NorthwestChina.Economic Geology,1992,87:1475~1495.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133