A5060933989- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- earthquake and tectonic studies
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- Geochemistry and Elemental Analysis
- Paleontology and Stratigraphy of Fossils
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- Geochemistry and Geochronology of Asian Mineral Deposits
- Mine drainage and remediation techniques
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- Geological and Geophysical Studies
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- Methane Hydrates and Related Phenomena
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Indiana University Bloomington
2015-2025
Xiamen University
2024
Xinjiang University
2024
Institute of Geochemistry
2012-2023
Chinese Academy of Sciences
2001-2023
National Natural Science Foundation of China
2023
China University of Geosciences (Beijing)
2007-2021
Indiana University
2007-2016
University of Vienna
2016
Université du Québec à Chicoutimi
1995-2001
The importance of externally derived sulfur in the genesis sulfide-rich, magmatic Ni-Cu-(platinum group element [PGE]) deposits remains a key, yet unresolved, issue. Calculations utilizing variety mafic magma types indicate that, general, sulfide saturation by fractional crystallization occurs after Ni has been depleted due to olivine crystallization. Cu- and PGE-rich layers may form during relatively later stages closed-system crystallization, but unless collection cotectic proportion...
We present a new empirical equation for estimating sulfur content in silicate melts at anhydrite saturation based on available experimental results and an updated sulfide-liquid by adding relevant data that were not previously used excluding controversial data. The fits of our equations to the calibration are within 10 percent error. Only total pressure, temperature, melt composition, parameters often known or can be reasonably assumed natural magmatic systems, required utilization...
Magmatic Cu‐Ni‐PGE sulfide mineralization associated with mafic to ultramafic igneous rocks is rare in convergent plate settings. However, recent exploration the Duke Island Complex of southeastern Alaska has detected horizons primarily olivine clinopyroxenite unit. The composition sulfides, recalculated 100% sulfide, averages 0.48% Ni and 1.4% Cu. was generated by emplacement multiple pulses variably fractionated magma ranging from picrite ankaramite that originated deeper staging chambers....
Research Article| May 01, 2003 SULFUR ISOTOPE EXCHANGE AND METAL ENRICHMENT IN THE FORMATION OF MAGMATIC Cu-Ni-(PGE) DEPOSITS Edward M. Ripley; Ripley Department of Geological Sciences, Indiana University, Bloomington, 47405 †Corresponding author: e-mail, ripley@indiana.edu Search for other works by this author on: GSW Google Scholar Chusi Li Author and Article Information Publisher: Society Economic Geologists Received: 14 Jun 2002 Accepted: 15 Nov First Online: 02 Mar 2017 Online ISSN:...
The Kharaelakh intrusion is one of several sill-like, multiphase gabbroic intrusions that host world-class Ni-Cu-PGE deposits in the Noril’sk-Talnakh region. sulfide ores are characterized by elevated δ34S values (10–12‰) and high PGE concentrations (e.g., up to10 ppm Pt). require addition crustal S with isotope ratios such as evaporite-bearing country rocks (δ34S, ~20‰) R factors (magma/sulfide mass ratios) 2,000) if Pt content magma similar to coeval, most undepleted lavas (~10 ppb). Such...