| 云南思茅大平掌铜多金属矿床流体包裹体特征及其成矿意义 |
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| 引用本文： | 李峰,庄凤良.云南思茅大平掌铜多金属矿床流体包裹体特征及其成矿意义[J].大地构造与成矿学,2000,24(3):237-243. |
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| 作者姓名： | 李峰 庄凤良 |
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| 作者单位： | 昆明理工大学地球科学系,云南,昆明,650093 |
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| 基金项目： | 云南省自然科学基金;97D03lM; |
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| 摘 要： | 大平掌铜多金属矿床由块状硫化物矿体（上部）和细脉浸染状矿体（下部）组成。前者的包裹体类型简单，均一温度、盐度和捕获压力较低；后者以包裹体类型复杂、均一温度及捕获压力较高为特征。其差异与成矿流体演化有关。研究表明，成矿流体以富K＋、Na＋、Cl－、、F－、CO2和CO为主，属中低温、中盐度的K质溶液,主要来源于海水，并有深部岩浆水的混合。
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| 关 键 词： | 流体包裹体 成矿流体 大平掌铜多金属矿床 云南思茅 |
FLUID INCLUSION CHARACTERISTICS AND ITS METALLOGENIC SIGNIFICANCE OF THE DAPINGZHANG CU-POLYMETAL DEPOSIT IN SIMAO,WESTERN YUNNAN |
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| Abstract: | The Dapingzhang Cu－ polymetal deposit was composed of massive sulfide ore beds and veinlet－ disseminated sulfide orebodies.Compared with the former,the inclusion in the latter was characterized by its complex assemblage in types,and higher homogenization temperature,salinity and trapped pressure.Such variations in different orebodies were related to the evolution of ore－ forming solutions.Based on the studies of composition,H－ and O－ isotopes of fluid inclusions,it can be deduced that ore－ forming fluid was characterized as being rich in K＋ ,Na＋ ,Cl－ ,,F－ ,CO2 and CO,and belongs to the K－ type solution,epi－ to mesothermal in nature,moderately salinity and high pressure,mainly derived from sea water mixed with magmatic water. |
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| Keywords: | Fluid inclusion ore－ forming fluid Dapingzhang Cu－ polymetal deposit Western Yunnan |
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