Application of Short Wavelength Infrared（SWIR） Technique in Exploration of Poorly Eroded Porphyry Cu District：A Case Study of Niancun Ore District,Tibet
详细信息
- 责任者：Yang Zhiming (Institute of Geology ; Chinese Academy of Geological Science ; Beijing 100037 ; China) ; Hou Zengqian
- 刊名：Mineral Deposits
- 出版年：2012
- 卷期：31(4)
- 关键词：斑岩铜矿床 ; porphyry copper deposit ; 红外光谱 ; infrared spectra ; 西藏 ; Tibet
- 页码：p.699-717
- 图表：15 illus., 3 tables, 29 refs.
- 分类号：1001
- issnNo：ISSN0258-7106
- isbnNo：CN11-1965/P
摘要
Short Wavelength Infra-Red (SWIR), a newly-developed technique in the field of mineral exploration, was tentatively used in this study to locate M/H centers of poorly eroded porphyry Cu deposits at Niancun, Tibet based on the fact that it has shown powerful function in locating M/H centers for VMS-type and epithermal deposits. As a result, seven types of alteration minerals were recognized. They are illite, chlorite, opal, pyrophillite, kaolinite, epidote, and phengite according to frequency of occurrences from high to low. The analysis shows that the eastern portion of the district with higher IC value, lower wavelength position of Al-OH absorption and alteration of illite-pyrophillite may be the M/H center of the Niancun deposit.