Results 51 to 60 of about 362,705 (221)

The Exploration Significance of Ag/Au, Au/Cu, Cu/Mo, (Ag×Au)/(Cu×Mo) Ratios, Supra-ore and Sub-ore Halos and Fluid Inclusions in Porphyry Deposits: A Review [PDF]

Journal of Sciences, Islamic Republic of Iran, 2017
This paper documents the exploration significance of Ag/Au, Au/Cu, Cu/Mo and (Ag×Au)/Cu×Mo) ratios of the supra-ore and sub-ore halos versus fluid inclusion evolution for 24 Cu, 6 Cu- Mo and 10 Cu-Au porphyry deposits worldwide. The ratios are based only
H. Atapour
doaj  

Isotopic Composition and Alteration Characteristics of Dacite Porphyry, and Their Prospecting Significance in the Dabaoshan Copper Deposit of Guangdong Province

Yankuang ceshi, 2020
BACKGROUND The main types of copper deposits are porphyry and skarn types. Dacite porphyry is a rock type commonly developed in the porphyry Cu-Mo-Au system.
ZHAO Chen-hui, WANG Cheng-hui, ZHAO Ru-yi, LIU Shan-bao, RAO Jiao-ping, LIU Wu-sheng, ZHANG Xiong, JIANG Jin-chang, LI Ting-jie   +8 more
doaj   +1 more source

Xenoliths in meteorites: Insights into the dynamics of material exchange between asteroids

Meteoritics &Planetary Science, EarlyView.
Abstract A minor fraction of meteorites contains xenoliths, that is, clasts that were formed on a different parent body than that of the host lithology. The occurrence of xenoliths is direct evidence for the exchange of material between asteroids, including exchanges between asteroids from the carbonaceous (CC) and non‐carbonaceous (NC) reservoirs ...
J. Gattacceca, B. Devouard, L. Bonal, Y. Marrocchi, A. Greshake, R. Tartèse, M. Gounelle, D. AuYang, C. Sonzogni, M. Hutson, A. Irving, C. Agee, T. Shisseh, A. Love, V. Vidal, D. Borschneck, S. A. Eckley, A. Morbidelli   +17 more
wiley   +1 more source

Development of exploration tools for porphyry-breccia-hosted mineral deposits (Appendix ii - Sample descriptions)

, 2020
Appendix ii for the Doctoral thesis "Development of exploration tools for porphyry-breccia-hosted mineral deposits"
C Scott (9648335)
core   +1 more source

Decoupling of Sr-Nd Isotopic Composition Induced by Potassic Alteration in the Shapinggou Porphyry Mo Deposit of the Qinling–Dabie Orogenic Belt, China

, 2021
In our previous study on petrogenesis of quartz syenite and granite porphyry, the host rocks of the Late Mesozoic Shapinggou Mo deposit in the Qinling–Dabie orogenic belt, we found that the initial Sr isotopic composition of the host rocks is strongly ...
Xiaochun Xu, Yuhua An, Jun He, Qiaoqin Xie, Fukun Chen, Tianhu Chen, Zhongyang Fu   +6 more
core   +1 more source

Rare Earth Element Potential in the Araí Rift Metavolcanic, Central Brazil: Gamma‐Ray Signatures, Mineralogy and Exploration Implications

Terra Nova, EarlyView.
ABSTRACT Although central Brazil hosts significant ion‐adsorption rare earth element (REE) deposits associated with A‐type granites, their coeval volcanic counterparts have been largely overlooked as exploration targets. This study demonstrates that acidic metavolcanic rocks of the Araí Group share strong radiometric, geochemical and mineralogical ...
Yuri Ribeiro, Nilson Francisquini Botelho, Valmir da Silva Souza, Diego Guilherme da Costa Gomes   +3 more
wiley   +1 more source

A Machine Learning Zircon Trace Element Tool to Predict Porphyry Deposit Type and Resource Size

Journal of Geophysical Research: Machine Learning and Computation
Porphyry deposits are primarily known for their association with base metals like copper and to some extent molybdenum and gold. Here we present machine learning models, based on zircon composition, that provide quantitative distinction between different
Zi‐Hao Wen, Bo Xu, Christopher L. Kirkland, David R. Lentz, Zeng‐Qian Hou, Tao Wang, Mao‐Wen Yuan   +6 more
doaj   +1 more source

Compositions of Cu-(Fe)-Sulfides in the 109 Reduced Granite-Related Cu Deposit, Xinjiang, Northwest China: Implications to the Characteristics of Ore-Forming Fluids

Geofluids, 2020
In general, porphyry Cu deposit is related to the highly oxidized ore-forming system. However, there are many porphyry Cu deposits that are related to the reduced ore-forming system, and the ore-forming characteristics of reduced porphyry Cu deposit are ...
Rui Liu, Genwen Chen, Jianxing Yang
doaj   +1 more source

Geodynamic Significance of Intraplate Basaltic Magmatism From the Western Mediterranean Region

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Dynamic topography changes as mantle convection evolves, making its past surface expression difficult to reconstruct. Widespread Neogene‐Quaternary intraplate basaltic magmatism across the Western Mediterranean Region allows us to test whether dated basalts preserve the mantle thermal structure responsible for regional dynamic support.
Chia‐Yu Tien, Nicky White, Megan Holdt, John Maclennan, Benedict Conway‐Jones   +4 more
wiley   +1 more source

The role of CO2 in the genesis of Dabie-type porphyry molybdenum deposits

Nature Communications
Porphyry-type molybdenum deposits, many of which are in China, supply most of the World’s molybdenum. Of particular importance are the molybdenum deposits located in the Qinling-Dabie region that are responsible for more than half of China’s molybdenum ...
Zi-Qi Jiang, Lin-Bo Shang, A. E. Williams-Jones, Xin-Song Wang, Li Zhang, Huai-Wei Ni, Rui-Zhong Hu, Xian-Wu Bi   +7 more
doaj   +1 more source