 | 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,...also appears as discrete grains associated with chalcopyrite, Pt–Pd tellurides, and native Au in alteration...only a minor amount of alteration (<5 vol.%) at the mine, whereas the discrete grains of the Pt–Fe alloy |  | | 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...consisting mainly of pyrrhotite, pentlandite, and chalcopyrite. The PGE are found either in solid solution |  | 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...mainly of variable proportions of pyrrhotite, chalcopyrite, pentlandite, and ±pyrite. Excluding vein assemblages...form of pyrite being converted to magnetite and chalcopyrite to a Cu-Fe-oxide (delafossite), with little...Ocean Sciences, Duke University, Durham, NC 27708, USA 2 Department of Geological and Environmental Sciences |  | | 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...the BMS minerals (pyrrhotite, pentlandite, and chalcopyrite) are the principal host of these elements; (ii)...parental magma 1. Introduction The Stillwater Complex (Montana, U.S.A.) is a layered ultramafic to mafic...stratigraphy of the Stillwater Complex, Montana, USA. (a) Simplified geological map of the Stillwater Complex (modified |  | | Report (issue) | | study area, Custer and Gallatin National Forests, Montana Edited by JANE M. HAMMARSTROM1, MICHAEL L. ZIENTEK2...Study Area, Custer and Gallatin National Forests, Montana U.S. Geological Survey Open-File Report 93-207...700 km2) of National Forest land in southwestern Montana adjacent to the northern part of Yellowstone National...elements. Mines in production in 1992 are the Stillwater mine (platinum, palladium, gold, rhodium, copper...copper, and nickel), the Mineral Hill mine (gold and silver), and the Livingston Marble and Granite Works |  | | Journal (article/letter/editorial) | | Montana Mineral Locality Index Downloaded by [University of Nebraska, Lincoln] at 20:00 09 April 2015...2015 K NOWN AS THE TREASURE STATE, Montana is rich in mineral and gemstone localities. The state motto...The middle third of the state is known as the Montana alkali province where the sediments have MICHAEL...view showing the Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded...mines at Butte in Silver Bow County and the Black Pine mine in Granite County have produced many fine crystal |  | | 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...analysis. The BMS identified are pyrrhotite, chalcopyrite, pentlandite and minor pyrite. Thirty-six grains...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) | | 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 |  | | Journal (article/letter/editorial) | | Nelson Lead isotopes in sul®des from the Stillwater Complex, Montana: evidence for subsolidus remobilization...Pb in sul®de minerals (primarily pyrrhotite, chalcopyrite, and pentlandite) from a suite of samples from...from the platiniferous J-M Reef of the Stillwater Complex were measured to elucidate the temporal and...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 |  | | 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 |  | | 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...pentlandite, pyrrhotite and chalcopyrite from the Bushveld and Stillwater Complexes are reported. The...Reef (Bushveld), the J-M Reef (Stillwater), Picket Pin deposit (Stillwater), and also barren sulfide-bearing |  | | 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.............................................. Chalcopyrite family .................................... |  | | Report (issue) | | Monoclinic. Point Group: 2/m. As irregular grains in chalcopyrite, long and veinletlike, vermiform, with curving... β = 94.0◦ X-ray Powder Pattern: Komsomol’skii mine, Russia. 2.14 (10), 2.21 (9), 2.60 (7), 1.955 (7)...Total 98.8 100.25 98.84 100.00 (1) Komsomol’skii mine, Russia; by electron microprobe, corresponding to...Ag0.09 Au0.02 )Σ=1.98 As1.02 . (2) Stillwater complex, Montana, USA; by electron microprobe, corresponding...(4) Pd2 As. Occurrence: As minute grains in chalcopyrite in veins along the footwall of a Cu–Ni sulfide |  | | 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 |  | 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 |  | 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...in sulfide concentrate from the Hitura Ni–Cu–PGE mine, Nivala, western central Finland. It is associated...associated with pyrrhotite, pentlandite, valleriite, chalcopyrite, cubanite, mackinawite, chromite, and the PGE...electron-microprobe data, reflectance data, Hitura mine, Nivala, Finland. SOMMAIRE Nous décrivons la tarkianite |  | | 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...percentages of pyrrhotite, pentlandite, and chalcopyrite in multiphase grains ----------------------...OF THE STILLWATER COMPLEX, MONTANA By NORMAN ABSTRACT Pentlandite, pyrrhotite, chalcopyrite, niccolite...occur in two chromitite zones ( G and H) of the Stillwater Complex. Detailed mineralogic studies of stratigraphic |  | 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...intergrowths of pentlandite, millerite, and chalcopyrite. The laurite occurs as inclusions in chromite...Geological Survey, Spokane Office, Spokane, WA, USA whole rock and magnetite rims around the sulfides |  | | Report (issue) | | Data: Orthorhombic. Point Group: n.d. µm, in chalcopyrite. Physical Properties: D(calc.) = 9.45 As rounded...Temagami Mine, Canada; by electron microprobe, corresponding to Pd2.99 Hg1.00 Te3.01 . (2) Stillwater complex...complex, Montana, USA; by electron microprobe, corresponding to (Pd2.95 Pt0.05 )Σ=3.00 Hg1.00 Te3.00 . Occurrence:...invasive chalcopyrite magma (Temagami Mine, Canada). Association: Merenskyite, hessite, chalcopyrite, stützite...Distribution: In Canada, in Ontario, from the Temagami Cu–Ni mine, Temagami Island, Lake Temagami, Nipissing district |  | | Journal (article/letter/editorial) | | SCIENTIFIC COMMUNICATIONS PENTLANDITE AND COMPLEX, MONTANA: TION PYRRHOTITE FROM IRON-NICKEL OF ASSOCIA...TED Introduction Graterol and Naldrett, THE STILLWATER RATIOS MINERALS AS A FUNC• mite-olivine,...the zone;(3) massive pyrrhotite-pentlandite-chalcopyrite pods at the base of the G-chromitite zone in..., A similar study has been in progressin the Stillwater Complex, of Precambrian age, southwestern 55EDJ-4...55EDJ-4, and C-395«) that containmineral blebs Montana, since 1967 as part of a U.S. Geological greaterthan |  | | Report (volume) | | TO WILDERNESS PRIMITIVE AREAS BEARTOOTH AREA, MONTANA AND WYOMING GEOLOGICAL SURVEY BULLETIN 1391-F ...Still water, and Sweet Grass Counties, Montana, and Park County, Wyoming. By FRANK S. SIMONS and THEODORE...vicinity, Carbon, Park, Stillwater, and Sweet Grass Counties, Montana, and Park County, Wyoming. (Studies...Bibliography: p. 114 1. Mines and mineral resources Montana. 2. Mines and mineral resources Wyoming Park Co...vicinity, Carbon, Park, Stillwater, and Sweet Grass Counties, Mont., and Park County, Wyo., that may come |  | | 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. |  | Larson, Peter B, Maher, Kierran, Ramos, Frank C, Chang, Zhaoshan, Gaspar, Miguel, Meinert, Lawrence D (2003) Copper isotope ratios in magmatic and hydrothermal ore-forming environments. Chemical Geology, 201 (3) 337-350 doi:10.1016/j.chemgeo.2003.08.006 | Journal (article/letter/editorial) | | Washington State University, Pullman, WA 99164-2812 USA Accepted 7 August 2003 Abstract Multi-collector...values, relative to NBS976, range over 9x . Chalcopyrite samples from mafic intrusions lie within a narrow...This range lies within the broader black smoker chalcopyrite and iron meteorite ranges, and possibly represents...than 2x lower than native copper. Ratios for chalcopyrite and bornite from moderate to high-temperature...hydrothermal activity. Fractionations between chalcopyrite and bornite, where they occur in the same sample |
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Stillwater Mine, Stillwater County, Montana, USA