Zobrazeno 1 - 10
of 74
pro vyhledávání: '"James E. Mungall"'
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
The second part of this article can be found here: 10.3389/feart.2023.819109 (DOI). At the late Triassic New Afton alkalic porphyry Cu-Au deposit (British Columbia, Canada), pyrite is a widely distributed minor sulfide phase within hypogene ore where
Externí odkaz:
https://doaj.org/article/2f8355af661d430aa28613eec9eea2ab
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
The first part of this article can be found here: 10.3389/feart.2023.819129 (DOI). Occurrences of significant concentrations of platinum-group elements (PGE) in porphyry deposits have seen limited attention and the geochemical controls on their depos
Externí odkaz:
https://doaj.org/article/74709fbea7f34bb59c7afddcfe4632b8
Autor:
Zhuosen Yao, James E. Mungall
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-11 (2022)
The Main Magnetite Layer of the Bushveld Complex of South Africa is an economically important deposit of Fe, Ti and V but its mode of formation is enigmatic. Models of fractional crystallization and reactive transport show that it probably accumulate
Externí odkaz:
https://doaj.org/article/496f2047d0664749b0da84fca6442cf4
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-13 (2021)
The Rustenburg Layered Suite of the Bushveld Complex, South Africa, has long been regarded as a textbook result of fractional crystallization from a melt-dominated magma chamber. Here, the authors find that the Rustenburg Layered Suite can be derived
Externí odkaz:
https://doaj.org/article/795fb282f67c42dd8de815822fcd7d77
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-13 (2016)
Large igneous intrusions layering is thought to represent an upward-aggrading crystal pile. However, Mungallet al.show that the Rustenburg Layered Suite of the Bushveld Complex, South Africa was created by the injection of a series of thin sheet-like
Externí odkaz:
https://doaj.org/article/1083099676844f30a72183e876a1354f
Publikováno v:
Geochimica et Cosmochimica Acta. 339:127-138
Autor:
Ying Zhou Li, James E. Mungall
Publikováno v:
Economic Geology. 117:1131-1148
The komatiitic Raglan Horizon in northern Quebec hosts one of the largest komatiite-associated magmatic sulfide deposits in the world. Several studies have suggested that the sulfide ores were formed by melting and transporting sedimentary sulfides f
Autor:
Zhuosen Yao, James E. Mungall
Publikováno v:
Geochimica et Cosmochimica Acta. 305:185-211
Genesis of magmatic Ni-Cu-(PGE) deposits involves many interconnected and multiple-scale processes in the fields of thermodynamics, kinetics and fluid dynamics. The main focus of quantitative work on magmatic sulfide ore genesis has been on equilibri
Autor:
M Christopher Jenkins, James E Mungall, Michael L Zientek, Kevin Butak, Sam Corson, Paul Holick, Ryan McKinley, Heather Lowers
Publikováno v:
Journal of Petrology. 63
The highest grade Pd-Pt deposit on Earth, the J-M Reef, is hosted in coarse-grained to pegmatoidal cumulates called the Reef Package. Decades of mine development of the J-M Reef have revealed that a distinct discontinuity in rock fabric marks the top
Publikováno v:
Economic Geology. 115:1799-1826
In this contribution, we analyze 30 years of mine development data and quantitatively identify the processes that control the grade and tenor of the mineralized rock. An assay database of more than 60,000 samples was used to examine variations in ore