| 青海纳日贡玛斑岩钼(铜)矿含矿斑岩矿物学特征及成岩成矿意义 |
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| 引用本文： | 郝金华.青海纳日贡玛斑岩钼(铜)矿含矿斑岩矿物学特征及成岩成矿意义[J].地质与勘探,2010,46(3):367-376. |
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| 作者姓名： | 郝金华 |
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| 作者单位： | 中国地质大学地质过程与矿产资源国家重点实验室,北京 |
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| 基金项目： | 国家科技支撑计划子课题项目(2006BAB01A08)、中国地质大调查项目(1212010630804)资助 |
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| 摘 要： | 本文侧重于矿物学特征分析对纳日贡玛赋矿斑岩进行了研究,结果表明:斑岩中黑云母斑晶种属为含铁金云母和富镁黑云母,角闪石种属为镁角闪石、透闪石与阳起石。纳日贡玛含矿斑岩属于I型花岗岩类,由幔源岩浆同熔壳源物质而形成;斑岩结晶压力值为1.18×108～1.39×108Pa;闪长玢岩和黑云母花岗斑岩的结晶温度为550℃～650℃,而浅色花岗斑岩则下降为500℃～550℃。斑岩中黑云母的Mg/Fe、Ti、Al、K、Na、Ca及F、Cl等元素含量及比值可以显示纳日贡玛具有良好的含矿性。纳日贡玛结晶压力、温度都较玉龙矿带低,反映纳日贡玛结晶岩浆房更靠近地表。纳日贡玛岩浆源区向壳源区靠近,而玉龙矿带则更靠近幔源区,表明成岩源区中壳幔物质混合比例的不同。
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| 关 键 词： | 矿物学特征 黑云母 成岩成矿 纳日贡玛 青海南部 |
| 收稿时间： | 1/5/2010 12:00:00 AM |
| 修稿时间： | 5/4/2010 12:00:00 AM |
Mineralogical Features of Porphyries in the Narigongma Mo(-Cu) Deposit,Southern Qinghai and
their Implications for Petrogenesis and Mineralization |
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| HAO Jin-hua.Mineralogical Features of Porphyries in the Narigongma Mo(-Cu) Deposit,Southern Qinghai and
their Implications for Petrogenesis and Mineralization[J].Geology and Prospecting,2010,46(3):367-376. |
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| Authors: | HAO Jin-hua |
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| Institution: | State Key Laboratory of Geological Processes and Mineral Resource,China University of Geosciences,Beijing |
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| Abstract: | This paper focuses on the study of the ore-bearing porphyry of the Narigongma deposit through mineralogical and geochemical analyses. The result reveals that the biotite phenocrysts in the deposit are ferri-phologopite or magnesium-rich biotite and the amphiboles are magnesium amphiboles,tremolites or actinolites. The porphyry should be classified as I-type granite,which was originated from the mantle,meanwhile assimilated crustal material is also present. The crystallization pressure of the porphyry is 1.1... |
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| Keywords: | mineralogy biotite petrogenetic and metallogenic Narigongma Southern Qinghai |
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