Re-Os Isotope Geochemistry of Magmatic Sulfide Ore Systems

1999 ◽  
pp. 29-57
Keyword(s):  
Isotope Geochemistry ◽  
Sulfide Ore ◽  
Magmatic Sulfide ◽  
Os Isotope

scholarly journals Zircon U-Pb and Pyrite Re-Os Isotope Geochemistry of ‘Skarn-Type’ Fe-Cu Mineralization at the Shuikoushan Polymetallic Deposit, South China: Implications for an Early Cretaceous Mineralization Event in the Nanling Range

Minerals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 480
Author(s):  
Shengbin Li ◽  
Yonghua Cao ◽  
Zeyou Song ◽  
Dan Xiao
Keyword(s):  
Contact Zone ◽  
Early Cretaceous ◽  
South China ◽  
Isotope Geochemistry ◽  
Time Interval ◽  
Mean Square ◽  
Geochronological Data ◽  
Nanling Range ◽  
Calcite Veins ◽  
Os Isotope

The Shuikoushan deposit is an economic ‘skarn-type’ polymetallic Pb-Zn deposit in South China. The deposit is located at the southern margin of the Hengyang basin in the northern part of the Nanling Range. Recently, economic Fe-Cu mineralization that occurs spatially connected to skarns along the contact zone between the granodiorite and limestones was discovered in the lower part of this deposit. Detailed zircon U-Pb geochronological data indicate that the granodiorite was emplaced at 153.7 ± 0.58 Ma (Mean Square of Weighted Deviates (MSWD) = 2.4). However, the pyrite Re-Os isochron age reveals that Fe-Cu mineralization formed at 140 ± 11 Ma (MSWD) = 8.1), which post-dates the emplacement of the granodiorite, as well as the previously determined timing of Pb-Zn mineralization (157.8 ± 1.4 Ma) in this deposit. Considering that Fe-Cu mineralization was connected with the contact zone and also faults, and that sulfide minerals commonly occur together with quartz and calcite veins that crosscut skarns, we interpret this mineralization type as being related to injection of post-magmatic hydrothermal fluids. The timing of Fe-Cu mineralization (140 ± 11 Ma) is inconsistent with a long-held viewpoint that the time interval of 145 to 130 Ma (e.g., Early Cretaceous) in the Nanling Range is a period of magmatic quiescence with insignificant mineralization, the age of 140 Ma may represent a new mineralization event in the Nanling Range.

scholarly journals Re-Os isotope geochemistry of komatiite-hosted Ni-Cu-PGE deposits in Finland

2019 ◽  
Vol 105 ◽  
pp. 102-122 ◽  
Author(s):  
M. Moilanen ◽  
E. Hanski ◽  
J. Konnunaho ◽  
S.-H. Yang ◽  
T. Törmänen ◽  
...  
Keyword(s):  
Isotope Geochemistry ◽  
Os Isotope

scholarly journals Magmatic Sulfide Ore Deposits

Elements ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. 89-95 ◽  
Author(s):  
Stephen J. Barnes ◽  
David A. Holwell ◽  
Margaux Le Vaillant
Keyword(s):  
Ore Deposits ◽  
Sulfide Ore ◽  
Magmatic Sulfide

Re-Os isotope geochemistry of three Chinese chondrites

2007 ◽  
Vol 52 (16) ◽  
pp. 2269-2274
Author(s):  
XiaChen Zhi ◽  
Xie Qin ◽  
RenDeng Shi ◽  
JiAn Hong
Keyword(s):  
Isotope Geochemistry ◽  
Os Isotope

Re–Os isotope geochemistry in the surface layers of ferromanganese crusts from the Takuyo Daigo Seamount, northwestern Pacific Ocean

2015 ◽  
Vol 49 (3) ◽  
pp. 233-241 ◽  
Author(s):  
Ayaka Tokumaru ◽  
Tatsuo Nozaki ◽  
Katsuhiko Suzuki ◽  
Kosuke T. Goto ◽  
Qing Chang ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Isotope Geochemistry ◽  
Northwestern Pacific ◽  
Northwestern Pacific Ocean ◽  
Surface Layers ◽  
Ferromanganese Crusts ◽  
Os Isotope

Re-Os isotope geochemistry of the Palaeoproterozoic Sakatti Cu-Ni-PGE sulphide deposit in northern Finland

2021 ◽  
Vol 132 ◽  
pp. 104044
Author(s):  
Marko Moilanen ◽  
Eero Hanski ◽  
Sheng-Hong Yang
Keyword(s):  
Isotope Geochemistry ◽  
Sulphide Deposit ◽  
Os Isotope
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