 | | Journal (article/letter/editorial) | | Halogen Geochemistry of the Stillwater and Bushveld Complexes: Evidence for Transport of the Platinum-Group...98195 ABSTRACT Compositional data on apatite, phlogopite, and amphibole indicate that the high-temperature...exception of those from the PGE ore zones of the Stillwater and Bushveld Complexes, have C1/(C1 + OH + F)...phases and low temperaturefluids.However, both the Stillwater and Bushveld phlogopites are enriched in Cl compared...deposit of Oli vine-Bearing Subzone I of the Stillwater Complex are used to compute a fluid composition |  | | Journal (article/letter/editorial) | | Geochemistry of the J-M Reef of the Stillwater Complex, Minneapolis Adit Area II. Silicate Mineral Chemistry...Chemistry and Petrogenesis by STEPHEN J. BARNES* AND ANTHONY J. NALDRETT (Received 22 June 1984; revised...The platinum group element (PGE) rich J-M Reef of the Stillwater Complex is associated with the reappearance...hosts the Reef is interpreted as the result of fresh influxes of magma into the Stillwater chamber. Cumulus...Series of the Stillwater. Liquid P crystallizes olivine at the pressure of the Stillwater chamber, but |  | Bow, C., Wolfgram, D., Turner, A., Barnes, S., Evans, J., Zdepski, M., Boudreau, A. (1982) Investigations of the Howland Reef of the Stillwater Complex, Minneapolis Adit area; stratigraphy, structure, and mineralization. Economic Geology, 77 (6) 1481-1492 doi:10.2113/gsecongeo.77.6.1481 | Journal (article/letter/editorial) | | Investigations of the Howland ReefI of the StillwaterComplex,Minneapolis Adit Area: Stratigraphy,Structure...Mineralization C. Bow, D. WOLFGRAM,A. TURNER,S. BARNES,J. EVANS,M. ZDEPSKI,AND A. BOUDREAU AnacondaCopperCompany...depositoccurswithin the lower part of the banded zoneof the Stillwater Complex, a layered, tholeiitic intrusionof Archcanage...Archcanage. The zone of platinum concentration, the Howland reef, is coincidentwith the reappearanceof olivine...the composition and thickness of the Howland reefareevidentover700 m of underground development. Therearesuperimposed |  | | Journal (article/letter/editorial) | | ALTERATION AND MINERALIZATION IN THE J–M REEF, STILLWATER COMPLEX, MONTANA JOSEPH S. POLOVINA 1254 Wonder Court...Court, Gardnerville, Nevada 89460, U.S.A. DONALD M. HUDSON 1540 Van Petten Street, Reno, Nevada 89503...borehole samples from the J–M Reef and its footwall in the Stillwater Complex, Montana. We used optical microscopy...altered in the least-altered reef sample. In the weakly altered samples of the reef, BMS occur in aggregates...aggregates contain inclusions of PGM from 80 to 130 m across at the BMS–silicate contact. In strongly altered |  | | Journal (article/letter/editorial) | | telluride mineral from the Stillwater Layered Igneous Intrusion, Montana, U.S.A.†k Chris J. Stanley1,* and Anna...specimens from the Stillwater Layered Igneous Intrusion, Stillwater Valley, Montana, U.S.A. (45°23′11′′N...telluride, new mineral, layered intrusion, Howland Reef, Stillwater Complex Introduction Kojonenite, is a...of the Minneapolis Adit, Howland Reef of the Stillwater Layered Igneous Intrusion, Stillwater Valley...Valley, Montana, U.S.A. (45°23′11′′N and 109°53′03′′W). The Howland Reef is a platinum-group mineral deposit |  | 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...the sulfide mineralization in the J-M reef horizon of the Stillwater Complex along the strike and down...down the dip of the deposit in the area of the Stillwater mine. We compare these results with data from...the composition of the reef sulfides in different spatial domains of the Stillwater mine area and between |  | | 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...deposits. K E Y WO R D S : Stillwater Complex, layered intrusions, J-M Reef, platinum-group element deposits |  | | Journal (article/letter/editorial) | | Merensky Reef in the Rustenburg section of the Bushveld Complex D . M . Nicholson i * and E.A. M a t h e...98195 USA 2 Department of Mineral Sciences,AmericanMuseum of Natural History,New York, NY 10024 USA Received...Abstract. A petrogenetic model for the Merensky Reef in the Rustenburg section of the Bushveld Complex...electron microprobe data. The model maintains that the reef formed by reaction of hydrous melt and a partially...feldspathic pyroxenite, there is a continuous range of reef lithology from pyroxenite to pegmatoidal harzburgite |  | | Report (volume) | | Gabbronoritic Rocks below the J-M Reef in the Mountain View Area, Stillwater Complex, Montana U.S. GEOLOGICAL SURVEY...Rocks below the J-M Reef in the Mountain View Area, Stillwater Complex, Montana By NORMAN J PAGE and BARRY...Data Page, Norman, J Petrology of the noritic and gabbronoritic rocks below the J-M Reef in the Mountain...Mountain View area, Stillwater Complex, Montana / by Norman J Page and Barry C. Moring. p. cm. (U.S. Geological...Moring, Barry C. II. Title. III. Title: Stillwater Complex, Montana. IV. Series. V. Series: Contributions |  | | Journal (article/letter/editorial) | | of Cumulates: the J-M Reef and Associated Rocks of the Stillwater Complex, Montana ALAN BOUDREAU∗ DEPARTMENT...GEOLOGY, DUKE UNIVERSITY, BOX 90227, DURHAM, NC 27708, USA RECEIVED MAY 5, 1998; REVISED TYPESCRIPT ACCEPTED...platinumgroup element deposit of the Stillwater complex, the J-M reef. OB I is characterized by a lower...crystallized layered igneous intrusions such as the Stillwater complex have traditionally been considered to...that the highCl, high-Mg parent liquids of the Stillwater and Bushveld complexes, like their modern-day |  | | Journal (article/letter/editorial) | | Petrology © by Springer-Verlag 1990 The Paasivaara PGE Reef in the Penikat Layered Intrusion, Northern Finland...Finland T. A. Huhtelin 1, T. T. Alapieti 1, and J. J. Lahtinen 2 Department of Geology, University of Oulu...initial discovery. The uppermost of these, the PV Reef, has the highest Pt/Pd ratio. It is located in the...interstices of this plagioclase orthocumulate. The Reef has also been encountered in other parts of the...braggite ((Pt, Pd, Ni)S). It is suggested that the PV Reef was formed in the mixing process when the fifth |  | | Journal (article/letter/editorial) | | 9 Springer-Verlag1989 Investigations of the Stillwater Complex: Part V. Apatites as indicators of evolving...fluid composition A.E. Boudreau 1 and I.S. M c C a l l u m z Department of Geology, Old Chemistry Building...Building, Duke University, Durham, NC 27706, USA 2 Department of Geological Sciences, AJ-20, University...University of Washington, Seattle, WA 98195, USA Abstract. Variations in the F, C1 and OH contents of apatite...Microprobe analysis of intercumulus apatires from the Stillwater Complex reveal that Cl-rich apatites, typically |  | | Journal (article/letter/editorial) | | Saini-Eidukat 1, P. W. Weiblen l, G. Bitsianes 2, and M. D. Glascock 3 1Newton Horace Winchell School of Earth...Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota, U.S.A., 2 Mineral Resources Research...Research Center, University of Minnesota, Minneapolis, Minnesota, U.S.A., 3 Reactor Research Facility, University...different biotite compositions reported from the Stillwater and Bushveld Complexes. Zusammenfassung Unterschiede...werden. Die Bedeutung dieser im Vergleich zum Stillwater- und Bushveldkomplex eindeutig verschiedenen |  | | Journal (article/letter/editorial) | | Sulfide and platinum mineralization in the Merensky Reef: evidence from hydrous silicates and fluid inclusions...Abstract. The base metal sulfides of the Merensky Reef are associated with hydrous silicates and intense...cumulus and postcumulus silicates. Biotite and phlogopite crystallized in the vicinity of sulfides from...have thus far not been described from the Merensky Reef. The earliest fluid inclusion compositions are NaCI-(H20)...intercumulus stage of the crystallizing Merensky Reef is directly related to the mode of sulfide precipitation |  | | Journal (article/letter/editorial) | | Distribution in the Stillwater Complex and Evolution of Vapor During Crystallization of Stillwater and Bushveld...Bushveld Magmas by E. A. MATHEZ 1 , V. J. DIETRICH 2 , J. R. HOLLOWAY 3 , AND A. E. BOUDREAU 4 1 (Received...occurrence and distribution of carbon in the Stillwater Complex have been investigated. In mineralized...system has been investigated for conditions of Stillwater and Bushveld crystallization. In alkali-poor...the first fluid to exsolve from Bushveld and Stillwater intercumulus melt was composed of a mixture of |  | 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) | | assemblages in the Stillwater Complex, Montana, USA Hannah M. Aird 1,2 & Katherine M. Ferguson 1 & Malia...2016 Abstract The sulfide assemblages of the Stillwater Complex away from the well-studied ore zones...assemblages are mainly found within and below the J-M reef, where native copper and sphalerite are also locally... and the same trend repeats from just below the reef and continues into the overlying N-II and GN-II...Modeling suggests that the sulfide Editorial handling: M. Fiorentin Electronic supplementary material The online |  | | Report (issue) | | Custer and Gallatin National Forests, South-Central Montana compiled by Bradley S. Van Gosen1 Open-File Report...references ...................................... 5 I. Stillwater Complex .......................................Absaroka-Beartooth study area in south-central Montana ... 4 INTRODUCTION This bibliography lists more...Mountains and Absaroka Range in south-central Montana. It was compiled during an evaluation of the mineral...ABSA, The 12 categories are: I. Stillwater Complex. The Stillwater Complex (fig. 1) is a geologically |  | | Journal (article/letter/editorial) | | University, Department of Geology , Durham, NC, 27706, USA Published online: 09 May 2007. To cite this article:...University, Department of Geology, Durham, NC 27706, USA. Potholes that develop in layered intrusions show...INTRODUCTION Potholes that have developed in the Stillwater and Bushveld intrusions are transgressive, funnel-shaped...(the Merensky Reef and the UG2 chromitite layer) and the Stillwater Complex (the J-M reef; e.g. Turner...alloys and Pt sulphides between normal Merensky Reef and the pothole environment and suggested that sulphur |  | 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) | | platinum-group-element reef deposits: examples from the Bushveld and Stillwater Complexes Eduardo T. Mansur...Barnes, S-J., The role of Te, As, Bi, Sn and Sb during the formation of platinum-group-element reef deposits:...deposits: examples from the Bushveld and Stillwater Complexes, Geochimica et Cosmochimica Acta (2020), doi:...platinum-group-element reef deposits: examples from the Bushveld and Stillwater Complexes Authors: *Eduardo...and Stillwater Complexes are reported. The samples are from: the Merensky Reef (Bushveld), the J-M Reef |  | | Journal (article/letter/editorial) | | cumulates from a lamprophyric magma Stephen J. Barnes & J. A. C. Anderson & T. R. Smith & L. Bagas Received:...sulfides. The MMUI sequence consists largely of phlogopite-rich pyroxenitic cumulates, with an inward dipping...contents with grades up to 1.5 g/t Pt+Pd+Au over 1-m intervals, returning to background values of low parts...material, which is available to authorized users. S. J. Barnes (*) CSIRO Exploration and Mining, 26 Dick...Australia 6151, Australia e-mail: steve.barnes@csiro.au J. A. C. Anderson : T. R. Smith Tanami Gold NL, P.O |  | | Journal (article/letter/editorial) | | mechanisms and post-formational redistribution BRONWEN M. COGHILL AND ALLAN H. WILSON Department of Geology...(~ Copyright the Mineralogical Society 614 B. M. C O G H I L L A N D A. H. WILSON or whether transport...the margin and increasing to a thickness of 9-10 m in the axis (Fig. 2b). The generally medium-grained...phases include quartz, potassium feldspar, biotite/phlogopite, hornblende, opaques (sulphides, magnetite, and...accessory titanite, apatite and zircon. The 'potato reef' is the name given to websterite and bronzitite |  | Li, Chusi, Ripley, Edward M., Sarkar, Arindam, Shin, Dongbok, Maier, Wolfgang D. (2005) Origin of phlogopite-orthopyroxene inclusions in chromites from the Merensky Reef of the Bushveld Complex, South Africa. Contributions to Mineralogy and Petrology, 150 (1) 119-130 doi:10.1007/s00410-005-0013-z | Journal (article/letter/editorial) | | Æ Edward M. Ripley Æ Arindam Sarkar Dongbok Shin Æ Wolfgang D. Maier Origin of phlogopite-orthopyroxene...xene inclusions in chromites from the Merensky Reef of the Bushveld Complex, South Africa Received:...in a chromitite seam at the base of the Merensky Reef of the Bushveld Complex on the farm Vlakfontein...and not amalgamations of multiple grains. Na-phlogopite and orthopyroxene are most abundant in the inclusions...inclusions. Edenitic hornblende, K-phlogopite, oligoclase and quartz are less abundant. Cl-rich apatite |  | | Journal (article/letter/editorial) | | n of REE-rich chlorapatite from the Stillwater Complex, Montana A. E. Bounnp.q,u Department of Geology...element-bearingsulfide mineralization of the J-M Reef of the Stillwater Complex. The chlorapatite may contain...platinum-group elernent(rce) deposit ofthe Stillwater Complex, the J-M Reef, are unusual in that they contain...Apatite occurs as a minor phase throughout the Stillwater Complex and associated rocks (Boudreau and McCallum... above the Basalseries.Within the platiniferousJ-M Reefin olivine-bearingzoneI (OBD of the Banded series |  | | Journal (issue) | | WASHINGTON May 2, 2009 9:00 am to 5:00 pm Clark County P. U. D. Building 1200 Fort Vancouver Way Vancouver...Howard 3 Some Zeolite Locations in Montana Part 4 - Eastern Montana - South Larry B. French HC 46 Box...Box 7204 Miles City, MT 59301 In southeastern Montana, zeolites occur in three different geologic settings:... 3) As secondary minerals in the Precambrian Stillwater Complex. The following is a list of occurrences...specimens in the Montana Mineral Museum (MTMM) at Montana Tech. Analcime Carbon County: Sedimentary rocks |
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