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矿床地质  2011 

新疆彩虹铜多金属矿床地质特征及成因探讨

Keywords: 地质学,地球化学,热液成矿作用,流体包裹体,矿床成因,彩虹铜多金属矿床,新疆

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Abstract:

彩虹铜多金属矿床位于库米什-彩华沟-依格尔达坂多金属成矿带内,具多期成矿特征。早期的火山_沉积成矿作用形成了层状含铜黄铁矿层。第2期热液成矿作用形成了脉状、块状、团块状的铜(铅锌)矿化,氧、氢同位素及流体包裹体研究均显示,在该期矿化过程中,有岩浆流体的参与,结合钨异常及时间证据,认为该期矿化与忠宝岩体的侵入有关,且受NE向构造的控制。成矿物质来自围岩阿尔彼什麦布拉克组。矿床成因为火山沉积-岩浆热液叠加改造型。

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