Magmatic volatiles and platinum-group element mineralization in the Stillwater layered intrusion, U.S.A.

Amy Parker; Patricia Clay; Alan E. Boudreau; Raymond Burgess; Brian O'Driscoll

doi:10.2138/am-2022-7982

Magmatic volatiles and platinum-group element mineralization in the Stillwater layered intrusion, U.S.A.

Amy Parker
, Patricia Clay
, Alan E. Boudreau
, Raymond Burgess
, Brian O'Driscoll

Earth and Environmental Sciences - Academic & Research

Research output: Contribution to journal › Article › peer-review

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Abstract

The activity of volatile-rich fluids may be important in the evolution of basaltic magmatic systems and associated precious metal ore formation. There is evidence for Cl-rich fluids within the Stillwater Complex (Montana, U.S.A.), which have been linked to platinum and palladium mineralization in the economically important Johns-Manville (J-M) Reef ore body. We present the first data set for heavy halogens (Cl, Br, and I) and natural noble gas isotopes in bulk rock and mineral separates from the Peridotite Zone and the Olivine-Bearing Zone I of the Stillwater Complex, including samples from the J-M Reef and G Chromitite bodies. Our data reveal concentrations of 4 to 13 500 ppm for Cl, 26 ppb to 360 ppm for Br, and

Original language	English
Pages (from-to)	797-814
Number of pages	18
Journal	The American Mineralogist
Volume	107
Issue number	5
DOIs	https://doi.org/10.2138/am-2022-7982
Publication status	Published - 1 May 2022

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 14 Life Below Water

Keywords

Experimental Halogens in Honor of James Webster
Halogens
J-M Reef
Stillwater intrusion
metasomatism
platinum-group elements

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10.2138/am-2022-7982

7982RAccepted author manuscript, 11.6 MBLicence: CC BY

Petrology and volcanology
Burton, M. (PI), Hartley, M. (PI), Mccormick Kilbride, B. (PI), Neave, D. (PI), Pawley, A. (PI), Polacci, M. (PI), Biagioli, E. (Researcher), Bonechi, B. (Researcher), Buso, R. (Researcher), Davies, B. (Researcher), Esse, B. (Researcher), Bronziet, J. (PGR student), Delbrel, J. (PGR student), Höhn, M. (PGR student), Hughes, R. (PGR student), Kember, A. (PGR student), Morgan, C. (PGR student), Pardo Cofrades, A. (PGR student), Pierce-Jones, T. (PGR student), Riddell, A. (PGR student), Rojas Guzman, F. (PGR student), Sen, R. (PGR student), Stewart, A. (PGR student) & Subbaraman, R. (PGR student)
Project: Research

Cite this

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title = "Magmatic volatiles and platinum-group element mineralization in the Stillwater layered intrusion, U.S.A.",

abstract = "The activity of volatile-rich fluids may be important in the evolution of basaltic magmatic systems and associated precious metal ore formation. There is evidence for Cl-rich fluids within the Stillwater Complex (Montana, U.S.A.), which have been linked to platinum and palladium mineralization in the economically important Johns-Manville (J-M) Reef ore body. We present the first data set for heavy halogens (Cl, Br, and I) and natural noble gas isotopes in bulk rock and mineral separates from the Peridotite Zone and the Olivine-Bearing Zone I of the Stillwater Complex, including samples from the J-M Reef and G Chromitite bodies. Our data reveal concentrations of 4 to 13 500 ppm for Cl, 26 ppb to 360 ppm for Br, and ",

keywords = "Experimental Halogens in Honor of James Webster, Halogens, J-M Reef, Stillwater intrusion, metasomatism, platinum-group elements",

author = "Amy Parker and Patricia Clay and Boudreau, \{Alan E.\} and Raymond Burgess and Brian O'Driscoll",

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year = "2022",

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T1 - Magmatic volatiles and platinum-group element mineralization in the Stillwater layered intrusion, U.S.A.

AU - Parker, Amy

AU - Clay, Patricia

AU - Boudreau, Alan E.

AU - Burgess, Raymond

AU - O'Driscoll, Brian

PY - 2022/5/1

Y1 - 2022/5/1

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AB - The activity of volatile-rich fluids may be important in the evolution of basaltic magmatic systems and associated precious metal ore formation. There is evidence for Cl-rich fluids within the Stillwater Complex (Montana, U.S.A.), which have been linked to platinum and palladium mineralization in the economically important Johns-Manville (J-M) Reef ore body. We present the first data set for heavy halogens (Cl, Br, and I) and natural noble gas isotopes in bulk rock and mineral separates from the Peridotite Zone and the Olivine-Bearing Zone I of the Stillwater Complex, including samples from the J-M Reef and G Chromitite bodies. Our data reveal concentrations of 4 to 13 500 ppm for Cl, 26 ppb to 360 ppm for Br, and

KW - Experimental Halogens in Honor of James Webster

KW - Halogens

KW - J-M Reef

KW - Stillwater intrusion

KW - metasomatism

KW - platinum-group elements

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DO - 10.2138/am-2022-7982

M3 - Article

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JF - The American Mineralogist

IS - 5

ER -

Magmatic volatiles and platinum-group element mineralization in the Stillwater layered intrusion, U.S.A.

Abstract

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Keywords

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Projects

Petrology and volcanology

Cite this