黑龙江省小兴安岭地区航放HF101异常特征及找矿方向
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摘要
通过地面放射性能谱等物探方法,对小兴安岭地区1∶5万高精度航放测量圈定的HF101异常开展综合查证工作。采用的工作手段为多道能谱剖面性、面积性查证圈定地面异常,开展槽探、钻探工程验证,最终在探槽及钻孔内部发现低品位铀矿化体、铌钽铷矿化体等找矿线索。通过研究铀异常的分布形态、花岗岩体的产出、变形相、铀矿物元素组合等特征,属加里东期花岗岩外接触带型铀矿(化);通过成矿条件分析,认为下一步找矿工作应围绕花岗岩体与构造汇聚部位开展。
Geophysical methods,such as the ground radioactive energy spectrum etc.are used to carry out comprehensive check of anomly HF-101 outlined with high precision airborne radioactive survey at scale 1∶50000.The ground anomly is outlined by means of multi-channel and areal check and low grade U mineralization and niobium an tantalum and rubidium mineralization are hit by trenching and drilling.Based on morphology of U anomly,occurrence of granite body,deformation phase and U mineral assemblage it is considered that the mineralization is of out contact zone type of Caledonian granite.The metallogenic condition is analyzed and the prospecting direction points to surrounding of the granite and intersections of the granite and structures.
Geophysical methods,such as the ground radioactive energy spectrum etc.are used to carry out comprehensive check of anomly HF-101 outlined with high precision airborne radioactive survey at scale 1∶50000.The ground anomly is outlined by means of multi-channel and areal check and low grade U mineralization and niobium an tantalum and rubidium mineralization are hit by trenching and drilling.Based on morphology of U anomly,occurrence of granite body,deformation phase and U mineral assemblage it is considered that the mineralization is of out contact zone type of Caledonian granite.The metallogenic condition is analyzed and the prospecting direction points to surrounding of the granite and intersections of the granite and structures.
引文
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(1)史建民,林泽付,丁继双.黑龙江省大兴安岭地区1∶5万航空物探测量异常查证报告[R].哈尔滨:黑龙江省地质资料档案馆,2014.
(2)林泽付,马涛,王睿.黑龙江省小兴安岭地区航放异常查证报告[R].哈尔滨:黑龙江省地质资料档案馆,2016.
[2]张金带,李子颖,蔡煜琦,等.全国铀矿资源潜力评价工作进展与主要成果[J].铀矿地质,2012,28(6):321-326.
[3]刘青华,王祝文,田钢,等.地面伽马能谱测量在浅覆盖区地质填图中的应用[J].地质与勘探,2003,39(2):61-64.
[4]莫帮洪,赵剑波,刘秀林,等.康滇地轴中段横山岩体的铀矿化类型与找矿方向[J].地质与勘探,2013,49(6):1070-1077.
[5]李海东,钟福军,张志勇,等.我国火山岩型铀矿床中铀-多金属组合特征及其意义[J].矿产与地质,2015(3):283-288.
[6]郭奎城,史建民,丁继双,等.黑龙江大兴安岭地区HFU-09号航放异常特征及找矿意义[J].地质与勘探,2016,52(3):556-563.
[7]张万良,陈黎明,党飞鹏,等.断陷带控矿机制研究:以赣南黄沙铀矿区为例[J].矿产与地质,2016,30(5):746-751.
[8]傅树超.福建省武夷山坪地钼矿床地质特征及成因探讨[J].地质与勘探,2011,47(2):268-276.
(1)史建民,林泽付,丁继双.黑龙江省大兴安岭地区1∶5万航空物探测量异常查证报告[R].哈尔滨:黑龙江省地质资料档案馆,2014.
(2)林泽付,马涛,王睿.黑龙江省小兴安岭地区航放异常查证报告[R].哈尔滨:黑龙江省地质资料档案馆,2016.