Re os isotopic dating of molybdenites

Development of Re-Os geochronology for crustal matrices has been ongoing since 1998 in the laboratory.This work has resulted in major advancements in the direct isotopic dating of crustal sulfide minerals, petroleum source-rocks, and natural hydrocarbons, using Re-Os isotopes.It is a vein and skarn type deposit genetically associated with the Xiaoliugou Caledonian granodiorite stock.

AUTHORS:20170726-151335659 Full text is not posted in this repository. Use this Persistent URL to link to this item: AUTHORS:20170726-151335659The Chah-Firouzeh deposit with about 100 Mt ore reserves @ 0.5% Cu is a porphyry copper deposit located 14 km west of the Meiduk deposit in the northern section of the Kerman Cenozoic Magmatic Assemblage (KCMA), southeastern Iran.

The Early-Middle Miocene epoch marks the most important period of porphyry Cu mineralization in the KCMA. Babu, Zircon U–Pb and molybdenite Re–Os geochronology, with S isotopic composition of sulfides from the Chah-Firouzeh porphyry Cu deposit, Kerman Cenozoic arc, SE Iran, Ore Geology Reviews, Volume 88, 2017, Pages 384-399, ISSN 0169-1368,

During this period, many adakitic magmas intruded the Eocene volcano-sedimentary sequences and formed some of the largest porphyry copper deposits in Iran, such as Sarcheshmeh and Meiduk.

In order to constrain the timing of the Xiaerchulu mineralization and discuss the petrogenesis of the hosting granites, molybdenite Re-Os, and zircon U-Pb and, Lu-Hf, and REE, geochemical, and Sr-Nd isotopic studies were completed in this study.

We measured Re-Os isotopes of six molybdenite samples from the main ore body, which yielded a weighted average model age of 261.7 ± 1.5 Ma with a MSWD of 0.55, indicating that the time of mineralization was at ca. High precision U-Pb dating for the studied granites yields Permian U ages ranging from 271 to 269 Ma.

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