滇西北雪鸡坪斑岩铜矿流体包裹体初步研究
Study of fluid inclusions in quartz veinlets in the Xuejiping porphyry copper deposit, Northwest Yunnan, China
查看参考文献77篇
|
文摘
|
雪鸡坪中型斑岩铜矿床位于三江地区义敦岛弧南端的中甸弧,成矿斑岩为石英闪长玢岩和石英二长斑岩,属于印支期产物.含矿岩体蚀变分带明显,由中心向外发育强硅化带→石英绢云母化带→粘土化-石英绢云母化带→青磐岩化带,工业矿体赋存于斑岩体中心强硅化和石英绢云母化带内.矿化类型以网脉状矿化为主,细脉浸染状矿化不发育.本文对主要矿化阶段石英脉中的流体包裹体系统进行了包裹体岩相学、显微测温学和激光拉曼谱学研究,发现与成矿有关的流体包裹体可以分为水溶液包裹体、CO2包裹体和含子矿物包裹体3类,子矿物主要为石盐、方解石、赤铁矿和少量CaCl2水合物及不透明硫化物.其中含子矿物包裹体均一温度为230～420℃,盐度为33.48%～75.40%NaClequiv.,密度为1.01～1.09g/cm3.激光拉曼光谱分析表明,包裹体的液相成分主要为H2O,气相成分为H2O和CO2.早期水溶液包裹体和CO2包裹体共生,其均一温度相近,以及纯CO2包裹体的发现,指示成矿流体存在不混溶现象,这种不混溶是由原始岩浆流体"二次沸腾"作用产生的.CO2相分离、温压条件降低和pH值升高是雪鸡坪斑岩铜矿硫化物沉淀的主要原因.晚期低温、低盐度的流体可能来源于大气降水与岩浆流体的混和,对矿化的意义不大. |
|
来源
|
岩石学报
,2008,24(9):2017-2028 【核心库】
|
|
关键词
|
流体包裹体
;
雪鸡坪斑岩铜矿
;
中句
;
滇西北
|
|
地址
|
1.
中国科学院地球化学研究所, 矿床地球化学国家重点实验室, 贵州, 贵阳
2.
云南省地质调查院矿产调查所, 云南, 大理
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1000-0569 |
|
学科
|
地质学 |
|
基金
|
国家自然科学基金
;
国家973计划
|
|
文献收藏号
|
CSCD:3499995
|
参考文献 共
77
共4页
|
|
1.
Audétat A. Formation of a magmatichydrotbermal ore deposit:Insights with LA-ICP-MS analysis of fluid inclusions.
SCIENCE,1998,279(5359):2091-2094
|
被引
7
次
|
|
|
|
|
2.
Baker T. Emplacment depth and carbon dioxide-rich fluid inclusions in intrusion-related gold deposits.
Economic Geology,2002,97(5):1111-1118
|
被引
32
次
|
|
|
|
|
3.
Beane RE. Porphyry copper deposits Part Ⅱ.Hydrothermal alteration and mineralization.
Economic Geology,1981,75:214-269
|
被引
3
次
|
|
|
|
|
4.
Beane RE. Hydrothermal fluids and hydrothermal alteration in porphyry copper deposits.
Porphyry copper deposits of the American Cordillera:Arizona Geological Society Digest,1995,20:83-93
|
被引
1
次
|
|
|
|
|
5.
Bodnar RJ. A method of ealeulateing fluid inclusion volumes based on vapor bubble diameters and PVTX properties of inclusion fluid.
Economic Geology,1983,78:535-542
|
被引
189
次
|
|
|
|
|
6.
Calagari AA. Fluid inclusion studies in quartz veinlets in the porphyry copper deposit at Sungun,East-Azarbaidjan,Iran.
Journal of Asian Earth Sciences,2004,23:179-189
|
被引
3
次
|
|
|
|
|
7.
Candela PA. A mass transfer model for copper and molybdenum in magnmtic hydrothermal systems:The origin of porphyry-type ore deposits.
Economic Geology,1986,81(1):1-19
|
被引
8
次
|
|
|
|
|
8.
Chacko T. Oxygen and carbon isotope fractionations between CO2 and calcite.
Geochimica et Cosmochimica Acta,1991,55(10):2867-2882
|
被引
14
次
|
|
|
|
|
9.
Cline JS. How to concentrate copper.
SCIENCE,2003,302(5653):2075-2076
|
被引
21
次
|
|
|
|
|
10.
Dilles JH. Wall-rock alteration and hydrothermal flow paths about the Ann-Mason porphyry copper deposit,Nevada:A 6-km vertical reeoustruetion.
Economic Geology,1992,87(8):1963-2001
|
被引
31
次
|
|
|
|
|
11.
Fan YH. Geological characteristios of the Pulang porphyry copper deposit,Yunnan.
Geology in China(in Chinese),2006,33(2):352-361
|
被引
4
次
|
|
|
|
|
12.
Hall DL. Freezing point depression of NaCl-KCl-H2O solutions.
Economic Geology,1988,83(1):197-202
|
被引
445
次
|
|
|
|
|
13.
Hedenquist JW. The role of magmas in the formation of hydrothermal ore deposits.
NATURE,1994,370(6490):519-527
|
被引
325
次
|
|
|
|
|
14.
Hedanquist JW. Evolution of an intrasion-centered hydrothermal system:Far Southeast-Lepanto porphyry and epithermal Cu-Au deposits,Philippines.
Economic Geology,1998,93(4):373-404
|
被引
1
次
|
|
|
|
|
15.
Heinrich CA. Segregation of ore metals between magmatic brine and vapor,a fluid inclusion study using PIXE microanalysis.
Economic Geology,1992,87(6):1566-1583
|
被引
56
次
|
|
|
|
|
16.
Heinrich CA. Metal fractionation between magmatic brine and vapor,determined by microanalysis of fluid inclusions.
GEOLOGY,1999,27(8):755-758
|
被引
95
次
|
|
|
|
|
17.
Heinrich CA. Mngmatic vapor contraction and the transport of gold from the porphyry environment to epithermal ore deposits.
GEOLOGY,2004,32(9):761-764
|
被引
53
次
|
|
|
|
|
18.
Heinrich CA. The physical and chemical evolution of low-salinitymagmatic fluids at the porphyry to epithermal transition:A thermodynamic study.
Mineralium Deposita,2005,39(8):864-889
|
被引
111
次
|
|
|
|
|
19.
Heinrich CA. Fluid-fluid interactions in magmatic-hydrothermal ore formation.
Reviews in Mineralogy and Geochemistry,2007,65(1):363-387
|
被引
84
次
|
|
|
|
|
20.
Hemley JJ. Hydrothermal ore-forming processes in the light of studies in rock-buffered systems Ⅱ:Some general geologic applications.
Economic Geology,1992,87(1):23-43
|
被引
24
次
|
|
|
|
|
了解气象卫星更多信息，请访问