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诸广岩体南部高坪地区铀矿化控矿因素及找矿方向
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摘要
高坪地区位于诸广岩体南部的长江铀矿田东侧,近年开展的铀矿普查多对浅部进行探索揭露,成果较差,笔者分析其中一个重要的原因可能是地表岩浆岩主体仅见印支期花岗岩,其他岩体仅小规模出露,岩浆侵入期次单一,目前深部已发现燕山期花岗岩体,可能是铀矿化赋存的重要场所。笔者通过近年在高坪地区开展铀矿普查工作,总结了该地区铀矿化特征,对区内铀矿化控矿因素进行了综合分析研究,认为断裂构造、有利的热液蚀变组合、岩体接触带是区内重要的三大控矿因素,提出工作区深部大规模发育的燕山期花岗岩与印支期花岗岩接触带、有利的热液蚀变组合及断裂构造三位一体共同发育部位是区内黄溪断裂带深部找矿重要方向,并根据控矿因素分析研究,结合区内大地音频电磁测深测量成果对深部接触界面进行预测,拟厘定深部找矿部位。
Gaoping area in the east of Changjiang Uranium Orefield of southern Zhuguang massif.We launched a new round of geologic prospecting in recent years,only have a poor outcome.I believe that one important reason may be only to see the surface indosinian granite,others only a small outcropping of rock,single phase intrusive activities.Currently,the Yanshanian granite has been found in the deep of rock,it may be the important place of uranium mineralization.In recent years,We carried out uranium prospecting work,summed up the characteristics of uranium mineralization,comprehensive analysis ore-controlling factors of uranium mineralization in the area,considered that faults,favorable combination of hydrothermal alteration,rock contact zone is the three important ore-controlling factors in Gaoping area.Then we make a point that the district where include the three condition(contact surface of indosinian granite and Yanshanian granite in the deep rock,a favorable combination of hydrothermal alteration,faults) is the important prospecting direction in the deep of Huangxi fault.According to ore control factors studied and AMT measurement information,we speculated the deep contact surface and the deep prospecting area of uranium mineralization in Gaoping area.
引文
[1]黄国龙,吴烈勤,邓平,等.粤北花岗岩型铀矿找矿潜力及找矿方向[J].铀矿地质,2006,22(5):267-280.
    [2]徐文雄,叶松鑫.诸广岩体南部长排地区铀矿找矿潜力[J].铀矿地质,2013,29(5):263-237.
    [3]陈振宇,黄国龙,朱捌,等.南岭地区花岗岩型铀矿的特征及其成矿专属性.2014,38(2):264-275.

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