 | Christopher Jenkins, M., Mungall, James E., Zientek, Michael L., Holick, Paul, Butak, Kevin (2020) The Nature and Composition of the J-M Reef, Stillwater Complex, Montana, USA. Economic Geology, 115 (8). 1799-1826 doi:10.5382/econgeo.4777 | Journal (article/letter/editorial) | | Nature and Composition of the J-M Reef, Stillwater Complex, Montana, USA M. Christopher Jenkins,1,2,† James...Washington 99201, USA 3Stillwater Mine, Sibanye-Stillwater, 2562 Nye Rd., Nye, Montana 59061, USA Abstract...Abstract In this contribution, we analyze 30 years of mine development data and quantitatively identify the processes...mineralization in the J-M reef horizon of the Stillwater Complex along the strike and down the dip of...area of the Stillwater mine. We compare these results with data from the East Boulder mine and whole-rock |  | | Journal (article/letter/editorial) | | Pt–Pd SULFIDE IN THE J–M REEF OF THE STILLWATER COMPLEX, MONTANA Chusi LI and Edward M. RIPLEY Department... Indiana 47401, USA Abstract Pt–Fe alloy (Pt3Fe) in the J–M Reef of the Stillwater Complex, as exposed...exposed in the Stillwater mine, in Montana, occurs intergrown with secondary Fe–Ni–Cu sulfide; together,...only a minor amount of alteration (<5 vol.%) at the mine, whereas the discrete grains of the Pt–Fe alloy...samples (>20 vol.%) from the J–M Reef at the Stillwater mine and elsewhere along the strike of the reef |  | | Journal (article/letter/editorial) | | COMPOSITION OF PLATINUM-GROUP MINERALS IN THE J-M REEF, STILLWATER COMPLEX BÉLINDA GODEL,† Centre for Exploration...platinum-group element (PGE)–bearing J-M reef, Stillwater Complex (Montana). The aims of the study were to determine...Bushveld Complex (South Africa) and the Stillwater Complex (Montana) contain stratiform layers, or “reefs...elements (PGE). In both the Bushveld and the Stillwater Complexes, the PGE are found spatially associated...metal sulfides consisting mainly of pyrrhotite, pentlandite, and chalcopyrite. The PGE are found either in |  | | Journal (article/letter/editorial) | | minerals and the whole rocks of the J-M Reef (Stillwater Complex): Implication for the formation of the...Reef (footwall, reef and hanging wall) of the Stillwater Complex (U.S.A.). The aims of the study were...establish: (i) whether the BMS minerals (pyrrhotite, pentlandite, and chalcopyrite) are the principal host of...relative to surrounding rocks than the other PGE. Pentlandite is the BMS mineral that contains the largest...in BMS minerals and is mainly partitioned in pentlandite. In contrast, Pt is almost exclusively found |  | Aird, Hannah M., Ferguson, Katherine M., Lehrer, Malia L., Boudreau, Alan E. (2017) A study of the trace sulfide mineral assemblages in the Stillwater Complex, Montana, USA. Mineralium Deposita, 52 (3) 361-382 doi:10.1007/s00126-016-0664-x | Journal (article/letter/editorial) | | sulfide mineral assemblages in the Stillwater Complex, Montana, USA Hannah M. Aird 1,2 & Katherine M....2016 Abstract The sulfide assemblages of the Stillwater Complex away from the well-studied ore zones...variable proportions of pyrrhotite, chalcopyrite, pentlandite, and ±pyrite. Excluding vein assemblages and...no silicate alteration. An upward trend from pentlandite-rich to pyrrhotite-rich to pyrite-rich assemblages...Ocean Sciences, Duke University, Durham, NC 27708, USA 2 Department of Geological and Environmental Sciences |  | | Journal (article/letter/editorial) | | AND MINERALIZATION IN THE J–M REEF, STILLWATER COMPLEX, MONTANA JOSEPH S. POLOVINA 1254 Wonder Court...the J–M Reef and its footwall in the Stillwater Complex, Montana. We used optical microscopy, scanning...BMS identified are pyrrhotite, chalcopyrite, pentlandite and minor pyrite. Thirty-six grains of PGM were...petrography, geochemistry, layered intrusion, Stillwater Complex, Montana. SOMMAIRE Nous avons établi la minéralogie...J–M et les roches du socle du complexe de Stillwater, au Montana. A cette fin, nous avons utilisé la microscopie |  | Wernette, B.W., Ripley, E.M., Li, C., Wintsch, R.P. (2018) Strongly negative δ34S values associated with secondary pyrite above and below the J-M Reef, Stillwater Complex, Montana. Chemical Geology, 493. 58-66 doi:10.1016/j.chemgeo.2018.05.023 | Journal (article/letter/editorial) | | pyrite above and below the J-M Reef, Stillwater Complex, Montana B.W. Wernette, E.M. Ripley, C. Li, R...pyrite above and below the J-M Reef, Stillwater Complex, Montana. The address for the corresponding author...Pyrite Above and Below the J-M Reef, Stillwater Complex, Montana IP T Wernette, B.W.1†, Ripley, E.M...Indiana University, Bloomington, Indiana 47405, USA US † – current address: Division of Earth and Ocean...North Carolina 27708, USA AC CE PT ED M AN Keywords: Sulfur isotopes, Stillwater Complex, J-M Reef |  | | Journal (article/letter/editorial) | | Nelson Lead isotopes in sul®des from the Stillwater Complex, Montana: evidence for subsolidus remobilization...chalcopyrite, and pentlandite) from a suite of samples from the platiniferous J-M Reef of the Stillwater Complex...351310 University of Washington Seattle, WA 98195, USA e-mail: mccallum@u.washington.edu Editorial responsibility:...enrichment and redistribution in the J-M Reef of the Stillwater Complex. Previous measurements of the isotopic...chemical disturbance since their formation. The Stillwater Complex has been described in a recent review |  | Ripley, Edward M., Wernette, Benjamin W., Ayre, Annie, Li, Chusi, Smith, Joshua M., Underwood, Benjamin S., Keays, Reid R. (2017) Multiple S isotope studies of the Stillwater Complex and country rocks: An assessment of the role of crustal S in the origin of PGE enrichment found in the J-M Reef and related rocks. Geochimica et Cosmochimica Acta, 214. 226-245 doi:10.1016/j.gca.2017.07.041 | Journal (article/letter/editorial) | | Manuscript Multiple S isotope studies of the Stillwater Complex and country rocks; An assessment of the...Keays, R.R., Multiple S isotope studies of the Stillwater Complex and country rocks; An assessment of the...pertain. Multiple S isotope studies of the Stillwater Complex and country rocks; An assessment of the... 1 Abstract- The J-M Reef in the Stillwater Complex of Montana is the highest grade Pd deposit in the...The ~ 2.7 Ga Stillwater Complex, located in the Beartooth Mountains in southwestern Montana, contains the |  | | Report (issue) | | the G and H Chromitite Zones of the Stillwater Complex, Montana GEOLOGICAL SURVEY PROFESSIONAL PAPER...the G and H Chromitite Zones of the Stillwater Complex, Montana By NORMAN J PAGE GEOLOGICAL SURVEY...diagram showing volume percentages of pyrrhotite, pentlandite, and chalcopyrite in multiphase grains -----...CHROMITITE ZONES OF THE STILLWATER COMPLEX, MONTANA By NORMAN ABSTRACT Pentlandite, pyrrhotite, chalcopyrite...occur in two chromitite zones ( G and H) of the Stillwater Complex. Detailed mineralogic studies of stratigraphic |  | | Journal (article/letter/editorial) | | reef deposits: examples from the Bushveld and Stillwater Complexes Eduardo T. Mansur, Sarah-Jane Barnes...reef deposits: examples from the Bushveld and Stillwater Complexes, Geochimica et Cosmochimica Acta (2020)...reef deposits: examples from the Bushveld and Stillwater Complexes Authors: *Eduardo T. Mansur¹, Sarah-Jane...sulfides (BMS) pentlandite, pyrrhotite and chalcopyrite from the Bushveld and Stillwater Complexes are...Reef (Bushveld), the J-M Reef (Stillwater), Picket Pin deposit (Stillwater), and also barren sulfide-bearing |  | Kojonen, K. K., Roberts, A. C., Isomaki, O.-P., Knauf, V. V., Johanson, B., Pakkanen, L. (2004) Tarkianite, (Cu,Fe)(Re,Mo)4S8, a new mineral species from the Hitura mine, Nivala, Finland. The Canadian Mineralogist, 42 (2) 539-544 doi:10.2113/gscanmin.42.2.539 | Journal (article/letter/editorial) | | Fe)(Re,Mo)4S8, A NEW MINERAL SPECIES FROM THE HITURA MINE, NIVALA, FINLAND KARI K. KOJONEN§ Geological Survey... OLLI-PEKKA ISOMÄKI Outokumpu Mining Oy, Hitura Mine, FIN–85560 Ainastalo, Finland VLADIMIR V. KNAUF...Ni–Cu–PGE mine, Nivala, western central Finland. It is associated with pyrrhotite, pentlandite, valleriite...electron-microprobe data, reflectance data, Hitura mine, Nivala, Finland. SOMMAIRE Nous décrivons la tarkianite...récemment dans un concentré de sulfures provenant de la mine à Ni–Cu–EGP de Hitura, près de Nivala, dans le centre-ouest |  | | Report (volume) | | Inclusions Within the B Chromitite, Stillwater Complex, Montana U.S. GEOLOGICAL SURVEY BULLETIN 1674-D...Inclusions Within the B Chromitite, Stillwater Complex, Montana By MICHAEL P. FOOSE and SUZANNE W. NICHOLSON...inclusions within the B chromitite of the Stillwater Complex, Montana, provide evidence for complex high-temperature...inclusions within the B chromitite, Stillwater Complex, Montana. (U.S. Geological Survey bulletin ; 1674-D)...Bibliography: p. 1. Sulfide minerals Montana. 2. Mineralogy Montana. SuzanneW. II. Title. III. Series. |  | | Report (issue) | | Stillwater Complex, Montana Structure, Mineralogy, and Petrology of the Basal Zone with emphasis on the...Cataloging in Publication Data Page, Norman J Stillwater Complex, Montana Structure, Mineralogy, and Petrology...Igneous. 2. Intrusions (Geology) Montana. 3. Sulphides. 4. Ore-deposits Montana. I. Title. II. Series: United....................... Geologic history of the Stillwater Complex and adjacent rocks Previous work and.............................................. Pentlandite ............................................ |  | | Journal (article/letter/editorial) | | 814-820 SCIENTIFIC COMMUNICATIONS PENTLANDITE AND COMPLEX, MONTANA: TION PYRRHOTITE FROM IRON-NICKEL...TED Introduction Graterol and Naldrett, THE STILLWATER RATIOS MINERALS AS A FUNC• mite-olivine,...and discuss the zone;(3) massive pyrrhotite-pentlandite-chalcopyrite pods at the base of the G-chromitite...5 cm diameter) pyrrhotite-pyritechalcopyrite-pentlandite blebsin a plagioclase cumurelationof the compositions...assemblages reportedby probe analyses show that pentlandite has a wide Graterol and Naldrett (1971), is relatively |  | | Journal (article/letter/editorial) | | Bushveld Complex (South Africa) or the Stillwater Complex (Montana, USA) contain layers enriched in platinum-group...Complex, South Africa) and the J-M Reef (Stillwater Complex, USA) and their Relationship to Microstructures...& Hieber (1986). Stillwater Complex The 2705 4 Ma (Premo et al., 1990) Stillwater Complex (Fig. 2a)...margin of the Beartooth uplift of southwestern Montana (Page & Zientek, 1985). The layered rocks are divided... As is the case in the Bushveld Complex, the Stillwater Complex contains several layers enriched in PGE |  | Barnes, Sarah-Jane, Pagé, P., Prichard, H. M., Zientek, M. L., Fisher, P. C. (2016) Chalcophile and platinum-group element distribution in the Ultramafic series of the Stillwater Complex, MT, USA—implications for processes enriching chromite layers in Os, Ir, Ru, and Rh. Mineralium Deposita, 51 (1) 25-47 doi:10.1007/s00126-015-0587-y | Journal (article/letter/editorial) | | distribution in the Ultramafic series of the Stillwater Complex, MT, USA—implications for processes enriching...of the rocks from the Ultramafic series of the Stillwater Complex are enriched in PGE relative to most...how the enrichment occurred in the case of the Stillwater Complex and applied our results to the chromite...are laurite and fine-grained intergrowths of pentlandite, millerite, and chalcopyrite. The laurite occurs...Geological Survey, Spokane Office, Spokane, WA, USA whole rock and magnetite rims around the sulfides |  | Prichard, Hazel M., Barnes, Sarah-Jane, Fisher, Peter C., Pagé, Philippi, Zientek, Michael L. (2017) Laurite and Associated PGM In the Stillwater Chromitites: Implications For Processes of Formation, and Comparisons With Laurite In the Bushveld and Ophiolitic Chromitites. The Canadian Mineralogist, 55 (1) 121-144 doi:10.3749/canmin.1600006 | Journal (article/letter/editorial) | | 3749/canmin.1600006 LAURITE AND ASSOCIATED PGM IN THE STILLWATER CHROMITITES: IMPLICATIONS FOR PROCESSES OF FORMATION...nine chromite layers (A to K) in the Stillwater Complex, Montana and then extend the study to examine...Complex and ophiolites. The most common PGM in the Stillwater chromitites is laurite, predominantly enclosed...was not included in chromite exsolved to form pentlandite, pyrrhotite, and PGM. The shape and composition...of the PGM within the chromite grains in the Stillwater chromitite layers is not uniform. Upper and lower |  | | Journal (article/letter/editorial) | | PLATINUM GROUP ELEMENT DEPOSIT IN THE STILLWATER COMPLEX, MONTANA (USA) Corey J. Wall† and James S. Scoates... BC V6T-1Z4, Canada Abstract The Stillwater Complex, Montana (USA), is one of the world’s largest layered...high-precision crystallization ages for the reef and the Stillwater Complex. All samples are coarse grained to pegmatitic...Frog Pond adit (2709.11 ± 0.56 Ma), East Boulder mine (2709.28 ± 0.32 Ma), and West Fork area (2709.00...crystallization of the Lower Banded series of the Stillwater Complex. The recognition that zircon can be successfully |  | Rifai, Kheireddine, Özcan, Lütfü-Çelebi, Doucet, François R., Rhoderick, Kyle, Vidal, François (2020) Ultrafast Elemental Mapping of Platinum Group Elements and Mineral Identification in Platinum-Palladium Ore Using Laser Induced Breakdown Spectroscopy. Minerals, 10 (3) 207 doi:10.3390/min10030207 | Journal (article/letter/editorial) | | Drilling, 2990 N Townsend Ave, Montrose, CO 81401, USA; krhoderick@firstdrilling.com (K.R.); vidal@emt.inrs...drill cores collected from a platinum/palladium mine using laser-induced breakdown spectroscopy (LIBS)...minerals in core samples from a palladium/platinum mine in the western United States. Its purpose is to...containing palladium and platinum from the Stillwater mine in Montana, USA, was cut and a LIBS scan of 40 mm ×...zone of the Stillwater Igneous Complex, a layer mafic intrusion in Southwestern Montana. There are three |  | | Journal (article/letter/editorial) | | ARTICLE The Lower Banded series of the Stillwater Complex, Montana: whole-rock lithophile, chalcophile,...rock types of the Lower Banded series of the Stillwater Complex are gabbronorite and norite with minor...Ave Ste 202, Spokane, WA 99201, USA Miner Deposita Keywords Stillwater Complex . Lower Banded series...Bushveld Complex of South Africa, the Stillwater Complex of Montana (USA), the Great Dyke of Zimbabwe, and...1980s, intensive work was carried out on the Stillwater Complex. There has been a steady stream of subsequent |  | | Journal (article/letter/editorial) | | June 2016, Vol. 80(4), pp. 585–637 The Stillwater Complex, Montana – Overview and the significance of volatiles...Sciences, Duke University, Box 90227, Durham, NC 27708, USA [Received 31 May 2015; Accepted 19 November 2015;...ACT The geology of the 2.7 Ga Stillwater Complex in South-Central Montana is reviewed with a focus on the...involved in the crystallization of the Stillwater Complex. A dry Stillwater magma would have been mineralogically...element and chromium deposits. K E Y WO R D S : Stillwater Complex, layered intrusions, J-M Reef, platinum-group |  | Marcantonio, Franco, Zindler, Alan, Reisberg, Laurie, Mathez, E.A. (1993) Re-Os isotopic systematics in chromitites from the Stillwater Complex, Montana, USA. Geochimica et Cosmochimica Acta, 57 (16) 4029-4037 doi:10.1016/0016-7037(93)90351-v | Journal (article/letter/editorial) | | syste~~ti~s in ~hro~tites from the Stillwater Complex, Monks + .OO USA FRANCO MARCANTONIO,’ ALAN ZINDLER...Observatory ofColumb~a University, Palisades, NY 10964, USA 2Department of Mineral Sciences, American Museum...Museum of Natural History, New York, NY 10024, USA (Received March 24, 1993; accepted in revised form May 27...Abstract-New Re-0s isotopic data on chromitites of the Stillwater Complex demonstrate isotopic equilibrium between...observed in chromitites and other rocks from the Stillwater Complex could result from interaction with these |  | | Journal (article/letter/editorial) | | correlation of major chromitite layers across four mine sections at the investigated localities (modified...With the exception of samples from the Pedrinhas mine which contain serpentine as the major interstitial...serpentinization of intercumulus olivine (Pedrinhas mine). B Moderately altered chromite grains in strongly...strongly chloritized chromitite (Cascabulhos mine): unaltered chromite (dark core) is replaced by compact...in chromitite with carbonate veins (Cascabulhos mine): compact ferrian chromite is almost totally replaced |  | | Journal (article/letter/editorial) | | most common platinum mineral. It occurs with pentlandite, chalcopyrite, and pyrrhotite in sulfide ores...such as the Bushveld (South Africa) and Stillwater (Montana) Complexes. In addition to the rare associated...mining in streams draining Mason Mountain, Macon County, North Carolina (Hidden 1898). It was ultimately...Centennial mines in the Medicine Bow Mountains, Albany County, Wyoming. An odd hydrothermal “vein” sperrylite...Great Eastern mine, Clark County, Nevada. It is an ore mineral in the active Pt-Pd mine and related occurrences |
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