The U.S. Geological Survey collaborated with the China Geological Survey to conduct a mineral-resource assessment of resources in porphyry copper deposits on the Tibetan Plateau in western China. This area hosts several very large porphyry deposits, ex
Ludington, Steve,Hammarstrom, Jane M. jhammars@usgs.gov,Robinson, Gilpin R. Jr. grobinso@usgs.gov,et al. Porphyry copper assessment of the Tibetan Plateau, China: Chapter F in <i>Global mineral resource assessment</i>. 2012-01-01.