成都理工大学学报（自然科学版）2011，Vol.38Issue(6)：684-688,5.
西藏甲玛铜多金属矿有用元素空间分布特征及地质意义
Research on the spatial distribution of useful elements in the Jiama copper-polymetallic deposit, Tibet, China
摘要
Abstract
In order to investigate the spatial distribution characteristics along different altitude ranges of the useful elements in the main ore bodies, data of 21911 chemical samples are used to draw contours of 9 different altitude ranges from bottom to top of the ore bodies. The samples were collected from drill-holes and investigation pits and measured by atomic absorption method and plasma atomic emission spectroscopy. The results show that Au, Ag, Cu concentrate around a center on the bottom of the ore body and are diffused from bottom to top, showing an arc-like shape below 4. 5 km altitude and a belt-like shape above 4.5 km altitude; Mo concentrates around two centers on the bottom of the ore body and is diffused farther compared with Cu, and also shows an arc-like shape; Pb, Zn show totally different characteristics and concentrate in a region above 4. 5 km altitude with a small range. Considering the element geochemical features and magmatic hydrothermal mineralization, it is concluded that an ore-containing center lies on the bottom of the main ore body and this is also the center of the rising hydrothermal materials; the useful elements are diffuse arc-like from bottom to top and show a belt-like shape on the top of the ore bodies with the influence of linear structures. The distribution of useful elements of the Jiama deposit is identical to that of the typical magmatic hydrothermal deposits.关键词
甲玛铜多金属矿/空间分布特征/有用元素/冈底斯成矿带Key words
Jiama copper-polymetallic deposit/ spatial distribution characteristics/ useful element/ Gangdise metallogenic belt分类
天文与地球科学引用本文复制引用
郭衍游,王焕,畅哲生,唐晓倩,丁帅..西藏甲玛铜多金属矿有用元素空间分布特征及地质意义[J].成都理工大学学报（自然科学版）,2011,38(6):684-688,5.基金项目
国家科技支撑项目(2006BAB01A01) （2006BAB01A01）
中央公益性行业科研专题(200911007-02) （200911007-02）
国土资源部青藏专项(1212010818089) （1212010818089）
国土资源地质大调查项目(1212010733803) （1212010733803）
西藏华泰龙矿业开发有限公司委托项目(E0804) （E0804）
