The Discovery and Significance of Rongga Porphyry Mo Deposit in the Bangong-Nujiang Metallogenic Belt, Tibet
Zheng Youye
Ci Qiong
Wu Song
Jin Liangxu
Guo Jianci
Ci Renji
Gong Fuzhi
Tan Meng
Zhang Hongqiang
Abstract：The Bangong-Nujiang metallogenic belt is a new discovery with obvious prospecting breakthrough in the last ten years,mainly including porphyry-skarn and porphyry-hypothermal types Cu-Au deposits,which are poorly studied.The Rongga deposit located at the western segment of south Bangong-Nujiang suture zone,is the first porphyry Mo deposit discovered ir 2016 that has a perspective large scale in the Bangong-Nujiang metallogenic belt.The Rongga deposit yielded a molybdenite ReOs weighted mean age of 99.3-±-0.1 Ma (MSWD=0.2,n =8),consistent with the isochron age of 99.2±0.4 Ma (MSWD=0.2,n=8),which indicated the mineralization occurred at early stage of Late Cretaceous during the collision between Lhasa and Qiangtang terranes when the subducted Bangong-Nuiiang oceanic crust has closed.This discovery of Rongga deposit has enriched the knowledge of metallogenic theory,filled the gap of Mo resources in this region,and the existed models are challenged in the Bangong-Nujiang belt.This discovery of Rongga deposit show the potential for porphyry Mo mineralization along the Bangong-Nujiang suture zone,and provide an example illustration and theoretical support for further exploration of porphyry Mo deposit in this belt.
Keywords：molybdenite Re-Os datingporphyry Mo depositRonggaBangong-Nujiang metallogenic beltTibetore deposits
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：13( 1441-1453 )