黄金科学技术 ›› 2018, Vol. 26 ›› Issue (4): 473-480.doi: 10.11872/j.issn.1005-2518.2018.04.473
Xuelong LIU(),Fucheng YANG,Changzhen ZHANG,Ying LUO,Shuaishuai WANG
摘要:
滇西北雪鸡坪斑岩铜矿床位于义敦—中甸岛弧带的南段,属区内印支期斑岩成岩成矿作用的典型矿床之一。对雪鸡坪铜矿床控矿构造特征进行了系统梳理与分析研究,结果表明矿体的产出形态受NW-NNW向断裂及褶皱的严格控制,矿体形成与印支期构造—岩浆活动关系密切。含矿斑岩中节理(裂隙)较为发育,并发育有大量的黄铁矿±黄铜矿+石英脉体充填,黄铁矿和黄铜矿等金属硫化物主要沿节理(裂隙)发育形成大量的细脉、细网脉体,黄铁矿化的发育强度与岩体中裂隙的发育程度密切相关。另外,对雪鸡坪铜矿区灰岩地层的有效圈定表明,灰岩与石英闪长玢岩呈侵入接触关系,加之区内广泛的岩浆热液活动,具备矽卡岩矿体形成的基本条件,为该区下一步找矿勘查工作提供了科学依据。
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