地球学报2012，Vol.33Issue(4)：663-672,10.DOI:10.3975/cagsb.2012.04.26
西藏尕尔穷铜金矿元素空间分布规律及地球化学勘查模型
Element Spatial Distribution of the Gaerqiong Copper-gold Deposit in Tibet and Its Geochemical Exploration Model
摘要
Abstract
The Gaerqiong copper-gold deposit in the western section of the Bangong Co-Nujiang River metallogenic belt is the only deposit that has reached the level of detailed investigation, with its gold resource reaching the large size. According to the analytical results of elements in 30 drill holes, the authors made a systematic analysis of the plane distribution characteristics of ore-forming elements and found that the Gaerqiong deposit has obvious element zoning characteristics related to magmatic hydrothermal metallogenesis. The ore body from southeast to northwest and from the depth to the shallow part has the zoning feature of Mo→Cu(Au)→Cu+ Au+Ag→Au+Cu+Ag →Au+Ag. Through studying the mineralization in the lateral and vertical directions of the Ⅱ—Ⅱ' vertical profile and No. 8 exploration line, the authors found that the ore body in the section and the plane has similar zoning characteristics. The geochemical exploration model indicates that from southeast to northwest there exists the anomaly zonality of Mo+Bi→Bi+Cu+Au+As→As+Au+Cu+Sb+Zn→Au(Cu)+ Zn→Au+Pb. Researches suggest that the hydrothermal center of the Gaerqiong deposit should be located in the 8-12 lines, the direction of fluid migration was from the southeast to the northwest, and the Gaerqiong copper-gold deposit is a typical porphyry-skarn deposit.关键词
尕尔穷/班怒成矿带/金/分带特征/斑岩-矽卡岩矿床Key words
Gaerqiong/ Banggonghu-Nujiang metallogenic belt/ gold/ Zoning characteristics/ porphyry-skarn deposit分类
天文与地球科学引用本文复制引用
张志,唐菊兴,杨毅,李志军,姚晓峰,邓世林,王红星,宋俊龙..西藏尕尔穷铜金矿元素空间分布规律及地球化学勘查模型[J].地球学报,2012,33(4):663-672,10.基金项目
本文由国家自然科学基金项目(编号:41172077)、国家973项目(编号:2011CB403103)和国土资源部公益性行业科研专项项目(编号:201011013-3)联合资助. （编号:41172077）
