Machangqing

Porphyry copper deposit in Yunnan, China

Names and other identifiers

GMRAP ID 463
Tract name Dali (142pCu8711)
Site status deposit

Geographic location

Country China
State or province Yunnan
Geographic location 100.437563, 25.521071
Geologic map unit 100.437563, 25.521071
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 35.8Ma
Age determination method Re-Os molybdenite
Age range 35.8 ±1.6 Ma; 33.9 ±1.1 Ma
Age reference Hou and others (2006); Zeng and others (2006); Xing and others (2009); Wang and others (2005)
Minerals actinolite, arsenopyrite, biotite, bismuthinite, bornite, chalcocite, chalcopyrite, chlorite, electrum, epidote, galena, gold, garnet, kaolinite, magnetite, matildite, molybdenite, muscovite/sericite, pyrite, pyrrhotite, sphalerite, sphene, tremolite
Associated rocks granite porphyry, monzonite porphyry, lamprophyre, skarn, gabbrodiabase, limestone, sandstone, shale, siltstone, shoshonite, hi-K calc-alkaline
Tectonic setting postconvergence
Stratigraphic age Eocene

Commodity and development information

Development status Prospect
Major commodities Cu, Mo, Au
Tonnage (Mt) 62Mt
Cu grade (%) 0.5%
Mo grade (%) 0.078%
Au grade (g/t) 0.35g/t
Contained copper 310,000t
Gold-Moly ratio 4.5

Reference information

Comments Ailoshan-Red River magmatic belt; alkaline rocks present. Development.
Study area name Tibetan Plateau
References Peng and others (1998); Hou and others (2006); Ren (1997); Wang and others (2005); Singer and others (2008); Xing and others (2009); Zeng and others (2006)
Site reference Ludington, Hammarstrom, and others (2012)
Hou, Zengqian; Zeng, Pusheng; Gao, Yongfeng; Du, Andao; and Fu, Deming, 2006, Himalayan Cu-Mo-Au mineralization in the eastern Indo-Asian collision zone—Constraints from Re-Os dating of molybdenite: Mineralium Deposita, v. 41, p. 33–45. (Also available at http://dx.doi.org/10.1007/s00126-005-0038-2.)Peng, Z., Watanabe, M., Hoshino, K., Sueoka, S., Yano, T., and Nishido, H., 1998, The Machangqing copper-molybdenum deposits, Yunnan, China—An example of Himalayan porphyry-hosted Cu-Mo mineralization: Mineralogy and Petrology, v. 63, p. 95–117. (Also available at http://dx.doi.org/10.1007/BF01162770.)
Ren, Z., 1997, Tectono-stratigraphic terrane analysis and metallization in Yunnan, China, in Pei, R., ed., Energy and mineral resources for the 21st century, geology of mineral deposits, mineral economics: Utrecht, VSP, International Geological Congress, 30th, Beijing, August 1997 [Proceedings], v. 9, p. 47–55.
Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.Wang Denghong; Qu Wenjun; Li Zhiwei; Yin Hanlong; and Chen Yuchan, 2005, Mineralization episode of porphyry copper deposits in the Jinshajiang-Red River mineralization belt—Re-Os dating: Science in China Series D—Earth Sciences, v. 48, no. 2, p. 192–198. (Also available at http://dx.doi.org/10.1360/03yd0200 and at http://link.springer.com/article/10.1360%2F03yd0200#.)Xing Junbing, Guo Xiadong, Qu Wenjun, Wang Zhihua, and Li Hanguang, 2009, Molybdenite Re-Os age and other geological meaning of Machangqing porphyry copper-molybdenum deposit: Gold Science and Technology, v. 17, p. 24–29. [In Chinese, English abstract.] (Abstract also available at http://www.goldsci.ac.cn:8080/EN/abstract/abstract9083.shtml.)Zeng Pusheng, Hou Zengquian, Gao Yongfeng, and Du Andao, 2006, The Himalayan Cu-Mo-Au mineralization in the eastern Indo-Asian collision zone—Constraints from Re-Os dating of molybdenite: Geological Review, v. 52, p. 72–84. (Also available at http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZLP200601013.htm.)