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地质通报  2009 

新疆富蕴地区希勒库都克铜钼矿床含矿斑岩的年代学与地球化学特征

, PP. 1840-1851

Keywords: 新疆,希勒库都克斑岩型铜钼矿床,含矿岩石,锆石SIMSU-Pb年龄,地球化学

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Abstract:

位于新疆富蕴县境内的希勒库都克铜钼矿属于斑岩型矿床。含矿花岗斑岩和石英闪长岩为弱过铝质高钾钙碱性岩石,具有相对富集大离子亲石元素、亏损Nb、Ta、Ti元素的地球化学特征。获得含矿花岗斑岩SIMS锆石U-Pb年龄(329.6±4.1)Ma。综合分析,花岗斑岩和石英闪长岩可能为同一岩浆不同演化阶段的产物。据含矿岩石高的正εNd(t)值、低的87Sr/86Sr初始值推测,其原始岩浆起源于亏损地幔源区。

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