李文忠,袁桂林,谢海林,宋生春,宋维刚,巩志远,马晓萍,李青.青海柳弯区铅锌铜多金属矿床地质特征及控矿条件[J].西北地质,2019,52(1):123-132
青海柳弯区铅锌铜多金属矿床地质特征及控矿条件
Geological Characteristics and Ore-controlling Conditions of the Liuwanqu Pb-Zn-Cu Polymetallic Deposit in Qinghai Province
投稿时间:2018-02-04  修订日期:2018-05-01
DOI:10.19751/j.cnki.61-1149/p.2019.01.011
中文关键词:  VMS型;柳弯区矿床;矿床地质;控矿条件
英文关键词:VMS-type;Liuwanqu deposit;geology of mineral deposit;ore-controlling conditions
基金项目:中央财政青藏专项“青海省祁连县走廊南山南坡一带铜多金属调查评价”(1212011221049)、青海省地质勘查基金“青海省祁连县柳弯区铜多金属矿预查”(T63120151102051934)联合资助
作者单位
李文忠 青海省第四地质勘查院, 青海 西宁 810029;青海省页岩气资源重点实验室, 青海 西宁 810029;中国地质大学(北京), 北京 100083 
袁桂林 青海省第四地质勘查院, 青海 西宁 810029;青海省页岩气资源重点实验室, 青海 西宁 810029 
谢海林 青海省地质矿产勘查开发局, 青海 西宁 810001 
宋生春 青海省第四地质勘查院, 青海 西宁 810029;青海省页岩气资源重点实验室, 青海 西宁 810029 
宋维刚 青海省第四地质勘查院, 青海 西宁 810029;青海省页岩气资源重点实验室, 青海 西宁 810029 
巩志远 青海省第四地质勘查院, 青海 西宁 810029;青海省页岩气资源重点实验室, 青海 西宁 810029;中国地质大学(北京), 北京 100083 
马晓萍 青海省第四地质勘查院, 青海 西宁 810029;青海省页岩气资源重点实验室, 青海 西宁 810029 
李青 青海省第四地质勘查院, 青海 西宁 810029;青海省页岩气资源重点实验室, 青海 西宁 810029 
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中文摘要:
      柳弯区铅锌铜多金属矿床是北祁连地区较为重要的VMS型矿床之一。由于本区地质背景复杂,矿体受后期构造改造严重,矿体分布规律难以掌握,一直未能取得找矿突破。笔者结合最新勘查成果,对矿区地质、矿床地质特征进了分析,总结了矿区矿化带特征、矿体特征、矿石组构特征、矿物成分及伴生关系、围岩蚀变特征等;对本区矿床控矿条件进行了讨论,并和国内外典型矿床进行了对比分析。本区成矿明显受地层、构造及变质作用等因素的影响。在柳弯区35线以西,矿体主要控制高程为3 000~3 500m;而柳弯区35线以东,矿体主要控制高程为2 700~3 000m。矿体向深部仍未圈闭,深部找矿潜力较大。
英文摘要:
      The Liuwanqu deposit is one of the most important VMS-type deposits in North Qilian area. However, due to the complexity of the geological background in this region, the ore body has been reformed seriously by the later structure, the distribution rule of the ore body is difficult to grasp, and the prospecting breakthrough has not been achieved. In this paper, combined with the latest exploration results, the geology of mining area and deposit have been analyzed, and the characteristics of mineralization zone, orebody, ore fabric, mineral composition and associated relationship, the alteration of surrounding rock and so on have been sμmmarized. The ore-controlling conditions of the ore deposits in this area have been discussed, which have been compared with typical ore deposits at home and abroad. The ore-forming in this area is obviously influenced by stratigraphic, structural and metamorphic factors. The distribution of ore bodies has a certain regularity. In the west of the 35 line of the Liuwanqu deposit, the mainly control heights of the ore body are 3000~3500m, while the ones in the east are 2700~3 00m. The ore body is not yet trapped to the deep part, which has large potential of deep prospecting.
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