Analysis of Prospecting Model of Xiongcun Cu (Au) Deposits Xietongmen County, Tibet

Abstract:

It is one of large copper mine which discoveried newly in the middle of arc-magma-metallogenic belt in Xiongcun Cu (Au) deposits, Xietongmen county, Tibet. In order to analyze deposits model, the methods adopted includes that arrangement of existing geophysical and geochemical exploration results, familiar with the former research results, and based on the collection of data, studying comprehensively the geological characteristics of deposits, discussing the deposits genesis. It found that metal mineral combination about the Cu (Au) ore body is pyrite + chalcopyrite + molybdenite (less) + magnetite (less), and transit to a peripheral area of pyrite + chalcopyrite + magnetite, to sphalerite + chalcopyrite + pyrite + lead ore (less) from inside to outside in porphyries body in Xiongcun by studying, which reflected the rock permeability and diffusion about the hydrothermal system of ore-bearing porphyry, all this caused by different types of mineralization process due to temperature and pressure reduction. Elements in the vertical direction with zoning characteristics, that is Cu, Au, Ag, As, Sb, (Bi) - Co, Ni - Mo - Mn - Ba - Pb, Zn, Cd, Bi, (Sb) from the center to outward. The elements anomalies and combination is the important geochemical markers to find and evaluate this kind of deposits. Xiongcun Cu (Au) deposits belong to low-grade porphyry type Cu (Au) deposits which related to emplaced hornblende quartz diorite late Jurassic, and is series of island arc type porphyry copper metallogenic of the Gangdese terrane subduction. Deficiency is a lack of data, it is very difficult to distinguish which kind of exploration method played a key role, the division includes both the exploration methods and working train of thought, prospecting cognition. One deposits is likely to belong to this category, and may belong to the other because of the mutual cross.

• Periodical: Key Engineering Materials (Volumes 575-576)
• Pages: 116-122
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.575-576.116
• Online since: September 2013
• Authors: Jian Guo Wang, You Ye Zheng, Shun Bao Gao
• Keywords: Analysis, Geological Characteristics, Mineralization Zone, Prospecting Model, Xiongcun Cu (Au) Deposits

References

[1] Xiaoming QU, Hongbo XIN, Wenyi XU. Petrogenesis of the Ore-Hosting Volcanic Rocks and Their Contribution to Mineralization in Xiongcun Superlarge Cu-Au Deposits, Tibet. Acta Geologica Sinica, 81 (2007)964-970.

[2] Yuan CHEN, Ju-xing TANG, Chuan-min SUN, etc. A discussion on the alteration features and genesis of the Xiongcun Cu(Au) deposits in Xietongmen County, Tibet, China. Journal of Chengdu University of Technology (Science & Technology Edition), 35(2008).

[3] Xinghai LANG. Contrast Study between Xiongcun Copper-gold Deposits and the Dongga Gold Deposits, Tibet. Chengdu University of Technology, (2007)13-41.

[4] Wenyi XU, Xiaoming QU, Zengqian HOU, etc. The Xiongcun Copper-gold Deposits in Tibet: Characteristics, Genesis, and Geodynamic Application. Acta Geologica Sinica, 80 (2006) 1392-1406.

[5] JuXing TANG, Yong HUANG, ZhiJun LI, etc. Element geochemical characteristics of Xiongcun Cu-Au deposits in Xaitongmoin County, Tibet. Mineral Deposits, 28 (2009) 15-28.

[6] Yuan CHEN, Ju-xing TANG, Chuan-min SUN , etc. A discussion on the alteration features and genesis of the Xiongcun Cu (Au) deposits in Xietongmen County, Tibet, China. Journal of Chengdu University of Technology (Science & Technology Edition), 35(2008).

[7] Youye ZHEGN, Gangyang ZHANG, Rongke XU, etc. The age restriction of Diagenesis and mineralization about Zhunuo porphyry copper deposits at Gangdise, Tibet. Chinese Science Bulletin, 52 (2007)2542-2548.

[8] Junhao WEI, Congqiang LIU, Zhenju DING. Active laws of element migration in wall-rock alteration processes for hydrothermal gold deposits: as evidenced by dongping, hougou and shuijingtun gold deposits. Acta Mineralogica Sinica, 20 (2000)200-205.

[9] Shuiping SHANG, Baoshan FU. The alteration and mineralization features of Xiongcun copper (gold) deposits, Tibet. The ninth session of the national deposits meeting, (2009).

[10] Li ZHANG, Ju-xing TANG, Qi DENG, etc. Study on mineral compositions of the ore from the Xiongcun Cu(Au) deposits in Xietongmen County, Tibet, China. Journal of Chengdu University of Technology (Science & Technology Edition),. 34 (2007). 318-322.

[11] Xinghai LANG, Yuchuan CHEN, Juxing TANG, etc. A Discussion on Genesis of Xiongcun Porphyry Copper—Gold Deposits, Xietongmen, Xizang(Tibet)—Evidences From Elements Spatial Distribution Characteristics. Geological Review, . 56(2010). 383-391.

[12] WenYi XU, XiaoMing QU, ZengQian HOU, etc. Ore forming fluid characteristics and genesis of Xiongcun copper-gold deposits in central Gangdese, Tibet. Mineral Deposits, 25(2006), pp.243-251.

[13] Zizheng ZHAGN. The Ore-forming Elementary Geochemistry Characters in the Xiongcun Copper-gold Clusters, in Xietongmen Country, Tibet. Chengdu University of Technology, (2007)13-41.

[14] Jun TAN, Junhao WEI, Chun-fu YANG, etc. Application state of isotopic dating methods for ore deposits. Geology and Prospecting, 42 (2006)60-65.

[15] Lang, J. and Rebagliati. C. M. Xietongmen Copper-Gold Porphyry Project, Tibet Autonomous Region, Peoples Republic of China. Continental Minerals Corporation Internal Technical Report, 2006, 135-136.

[16] Juxing TANG, FengJi LI, ZhiJun LI, etc. Time limit for formation of main geological bodies in Xiongcun copper-gold deposits, Xietongmen County, Tibet: Evidence from zircon U-Pb ages and Re-Os age of molybdenite. Mineral Deposits, 29 (2010).

[17] Junfa SHI, Huajun YAO, Youzhi LI, etc. One hundred cases about strategy and exploration of information prospecting. Geological Publishing House, (2005), 1-70.