Results 31 to 40 of about 332,979 (215)

Gold-base metal mineralization of the Mikheevsky (Novonikolaevsky) porphyry copper ore cluster, South Urals [PDF]

Минералогия
The paper describes different types of base metal mineralization of the Mikheevsky (Novonikolaevsky) ore cluster (South Urals, Russia). At the Mikheevskoe porphyry copper deposit, goldbase metal mineralization occurs as subepithermal veins up to 30 cm ...
O.Yu. Plotinskaya, V.V. Khrebtievsky, E.V. Kovalchuk, M.M. Savostyanova   +3 more
doaj   +1 more source

Oxidized sulfur-rich arc magmas formed porphyry Cu deposits by 1.88 Ga

Nature Communications, 2021
Tectonomagmatic conditions in the Precambrian were hypothesized to be unfavorable for porphyry Cu deposit formation. Here, the authors show that metallogenic processes typify Phanerozoic porphyry Cu deposits operated by ~1.88 Ga, reflecting modification ...
Xuyang Meng, Jackie M. Kleinsasser, Jeremy P. Richards, Simon R. Tapster, Pedro J. Jugo, Adam C. Simon, Daniel J. Kontak, Laurence Robb, Grant M. Bybee, Jeffrey H. Marsh, Richard A. Stern   +10 more
doaj   +1 more source

Porphyry indicator zircons (PIZs): Application to exploration of porphyry copper deposits

Ore Geology Reviews, 2020
Abstract Magmas with a high oxidation state (FMQ +1 to +2), a high-water content (≥ 4 wt % H2O) and a high degree of fractionation are necessary to form porphyry copper deposits (PCDs). Different proxies, such as Fe3+/Fe2+ ratio of whole-rock, minerals indicative of high oxygen fugacity (fO2) and water content as well as geochemical signatures of ...
Pizarro, Héctor, Campos, E., Bouzari, F., Rousse, Sonia, Bissig, T., Grégoire, Michel, Riquelme, R.   +6 more
openaire   +2 more sources

Hydrothermal mineralization and alteration in the Ilovica Cu-Au porphyry deposit, Eastern Macedonia [PDF]

As a result of the latest detailed studies carried out by the Phelps Dodge company and continued by the Euromax company, the Ilovitsa deposit has been classified as a Cu-Au porphyry deposit.
Doneva, Blagica, Panevska Nikolova, Milica, Spasovski, Orce   +2 more
core   +2 more sources

Petrography, geochemistry, and tectonic setting of intrusive bodies of the Seridune deposit, northeast of Sarcheshmeh mine, Kerman Province, with an emphasis on Seridune porphyry intrusive body [PDF]

پترولوژی
IntroductionThe Cenozoic Urumieh–Dokhtar magmatic arc (UDMA) in Iran is a part of the Alpine-Himalayan orogenic belt hosts well-known porphyry Cu ± Mo ± Au ± Ag and epithermal Cu (± Au) deposits (McInnes et al., 2003; Hou et al., 2011; Richards et al ...
Mahdieh Bamorovat, Sara Dargahi, Mohsen Arvin, Alireza Shaker, Majid Aminzadeh   +4 more
doaj   +1 more source

Trace elements and melt inclusion in zircon within the Qunji porphyry Cu deposit: Application to the metallogenic potential of the reduced magma-hydrothermal system

Open Geosciences
The Qunji porphyry copper (Cu) deposit, located within the Awulale metallogenic belt (AMB) in the western Tianshan orogenic belt, exhibits distinct geochemical and mineralogical characteristics that have not been fully understood.
Zhang Zizhen, Gao Zhengxi, Zuo Yushan, Zuo Lei, Liu Rui   +4 more
doaj   +1 more source

SULFUR SOURCES OF SULFIDES OF THE AK-SUG CU-AU PORPHYRY DEPOSIT, EASTERN TUVA [PDF]

Минералогия, 2019
The paper presents the S isotopic composition of sulfides from the Ak-Sug Au-Cu-porphyry deposit hosted by Early Proterozoic magmatic rocks. The S isotopic composition of sulfides varies from +1.0 to +3.2 ‰: +2.5 to +3.2 ‰ for molybdenite-I, +1.0 to +3.1
R.V. Kuzhuget, A.O. Mongush, N.N. Ankusheva   +2 more
doaj   +1 more source

Geochemistry and Geochronology of Magmatic Rocks in Southwestern and Northeastern Cambodia: Implications for the Tectonic Evolution and Metallogenesis of the Loei Fold Belt

Geological Journal, EarlyView.
The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang, Khin Zaw, Kakda Kret, Ivan Belousov, Kotaro Yonezu, Koichiro Watanabe, Charles Makoundi   +6 more
wiley   +1 more source

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

Geological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang, Hong Wentao, Xiao Fan, Jin Guodong, Shi Hongyang, Ma Zhiwang, Wu Chen, Xue Yujingyang   +7 more
wiley   +1 more source

In situ U-Pb dating and trace elements of magmatic rutile from Mujicun Cu-Mo deposit, North China Craton: Insights into porphyry mineralization

China Geology
: Porphyry Cu (Mo-Au) deposit is one of the most important types of copper deposit and usually formed under magmatic arc-related settings, whilst the Mujicun porphyry Cu-Mo deposit in North China Craton uncommonly generated within intra-continental ...
Fan Yang, Jing-wen Mao, Wei-dong Ren, Jia-run Tu, Gilby Jepson, Si-yuan Meng, Zhi-min Wang   +6 more
doaj   +1 more source