Lithogeochemistry and chemostratigraphy of the Rosemont Cu-Mo-Ag skarn deposit, SE Tucson Arizona: A simplicial geometry approach

2017 ◽  
Vol 180 ◽  
pp. 35-51 ◽  
Author(s):  
Juan C. Ordóñez-Calderón ◽  
Sergio Gelcich ◽  
Faiqa Fiaz
Keyword(s):  
Skarn Deposit ◽  
Simplicial Geometry

Geochemistry of magnetite from the Hongniu–Hongshan Cu skarn deposit in Yunnan Province, SW China

2021 ◽  
pp. 104237
Author(s):  
Hui-juan Peng ◽  
Lin Hou ◽  
Ce Sun ◽  
Hao Zou ◽  
Tian-rui Weng ◽  
...  
Keyword(s):  
Yunnan Province ◽  
Skarn Deposit ◽  
Sw China

scholarly journals U-Th-He Geochronology of Pyrite from Alteration of the Au-Fe-Skarn Novogodnee-Monto Deposit (Polar Urals, Russia)—The Next Step in the Development of a New Approach for Direct Dating of Ore-Forming Processes

Geosciences ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 408
Author(s):  
Olga Yakubovich ◽  
Ilya Vikentyev ◽  
Ekaterina Ivanova ◽  
Mary Podolskaya ◽  
Ivan Sobolev ◽  
...  
Keyword(s):  
Mass Fraction ◽  
Magmatic Activity ◽  
Skarn Deposit ◽  
Ore Formation ◽  
New Approach ◽  
Polar Urals ◽  
Alteration Halo ◽  
Ore Bodies ◽  
He Isotopes ◽  
Single Grain

We report on the application of the U-Th-He method for the direct dating of pyrite from the alteration halo of the Novogodnee-Monto Au-Fe-skarn deposit, Polar Urals. The deposit is genetically related to the formation of volcanogenic complexes of the Ural Paleozoic belt. A modification of the original methodology for measuring U, Th and He isotopes in a single grain allowed us to determine a U-Th-He age of 382 ± 8 Ma (2σ) based on six pyrite samples from the altered rocks of the deposit (U mass fraction ~0.2 mg/kg; Th/U ~ 3.5; 4He specific volume ~ 10−5 cm3·STP·g−1). This age is consistent with estimates of the age of ore formation and coeval with the end of the period of island arc magmatic activity. Our results indicate that U-Th-He dating for pyrite samples of ~1 mg in weight from the hydrothermal-metasomatic halo of ore bodies is possible, providing a crucial next step in the development of U-Th-He pyrite geochronology.

scholarly journals Composition of garnet from the Yongping Cu skarn deposit, South China: implication for ore-fluid evolution

2021 ◽  
pp. 104585
Author(s):  
Mingjun Tian ◽  
Xiaochun Li ◽  
Jinghui Guo ◽  
Yonggang Li ◽  
Yu Zhang
Keyword(s):  
South China ◽  
Skarn Deposit ◽  
Fluid Evolution

Genesis of the Yaguila Pb-Zn-Ag-Mo skarn deposit in Tibet: Insights from geochronology, geochemistry, and fluid inclusions

2019 ◽  
Vol 172 ◽  
pp. 83-100 ◽  
Author(s):  
Jing Xu ◽  
Youye Zheng ◽  
Xiang Sun ◽  
Xiaofeng Li ◽  
Guangzhou Mao
Keyword(s):  
Fluid Inclusions ◽  
Skarn Deposit
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