摘要
下看木仓金矿床位于西秦岭造山带夏河—合作断裂北侧,矿床赋存于印支期老豆石英闪长斑岩与尕日火山岩接触带附近,矿体的产出严格受接触带两侧的构造控制。矿体呈脉(板)状,主要矿体厚度稳定,平均厚度1.84 m,Au的平均品位为4.64×10^-6。老豆石英闪长斑岩与下看木仓金矿床有着密切的时间和空间关系。通过对矿床地质特征、控矿因素、矿床成因和找矿标志的研究,提出下看木仓金矿床为中温(岩浆)热液型矿床,指出矿脉(体)及石英闪长斑岩体的深部是扩大矿床远景的有利部位。
Xiakanmucang Au deposit is located on the north side of Xiahe-Hezuo fault in the western Qinling orogenic belt.The deposit is hosted near the contact zone between Laodou quartz diorite porphyry and Gari volcanic rock of Indosinian period,and the output of orebody is strictly controlled by the contact zone and the structures on both sides.The orebodies are in veined(plate-like)shape.The thickness of the main orebody is stable,and the average thickness is 1.84 m and the average Au grade is 4.64×10^-6.Laodou quartz diorite porphyry has a close temporal and spatial relationship with Xiakanmucang Au deposit.For the study of deposit feature,ore-controlling factor,deposit genesis and prospecting index,it is considerd that Xiakanmucang Au deposit belongs to the hydrothermal magma type deposit of middle temperature.There is a great prospecting potential at the depth of the orebody(vein)and quartz diorite porphyry in the mining area.
作者
郭素雄
陈明辉
陈孟军
翟中尧
王广有
朵德文
鲍振襄
蔡凡
GUO Suxiong;CHEN Minghui;CHEN Mengjun;ZHAI Zhongyao;WANG Guangyou;DUO Dewen;BAO Zhenxiang;CAI Fan(Geological Team No.245 of Hunan Nonferrous Metals Geological Exploration Bureau,Jishou 416000,Hunan,China;Hunan Development Mining Co.,Ltd.,Changsha 410000,Hunan,China;Schoool of Geosciences and Info-physics,Central South University,Changsha 410012,Hunan,China;Hunan Geological Exploration Institute of China Metallurgical Geology Bureau,Changsha 410001,Hunan,China;Chenzhou Mineral Development Co.,Ltd.,Hezuo 747005 Gansu,China;Xiangyang Oil Delivery Department,Sinopec Pipeline Storage and Transportation Co.,Ltd.,Xiangyang 410002,Hubei,China)
出处
《矿产与地质》
2020年第5期897-904,910,共9页
Mineral Resources and Geology
关键词
金矿床
地质特征
控矿因素
矿床成因
找矿方向
甘肃省
Au deposit
geological characteristics
ore-controlling factor
deposit genesis
prospecting direction
Gansu Province
