 | | Journal (article/letter/editorial) | | .78 olivine 1.01 46.9 97 * After subtracting ilmenite and the silicate impurity. a Konopicky, K., and...WESTERN HEMISPHERE 6. Pillikin mine, Sec. 28, T. 11 N., R. 8 E., Eldorado County, California. Disseminated...G. Wells, 1940' 8. Pillikin mine, Sec. 28,T.ll N., R.8 E., Eldorado County, California. Fine grained disseminated...191K). 9. Coggins mine, Sec.35, T.39 N., R.4W., Little Castle Creek, Shasta County, California. Leopard... From dump Coggins mine. Collected by F. G. Wells, 1940. 10. Pick and Shovel mine, Sec.34,35, T. 29 S |  | | 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 |  | | 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..................................... Magnetite, ilmenite, and hematite ............................... |  | | 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) | | plagioclase from anorthosites in the Stillwater Complex, Montana: implications for the origin of the anorthosites...1US Geological Survey, M.S. 954, Reston, VA 22092, USA 2Department of Geology and Geophysics, University...Multiphase inclusions, consisting of clinopy- roxene + ilmenite + apatite, occur within cumulus plagioclase grains...grains from anorthosites in the Stillwater Complex, Montana, and in other rocks from the Middle Banded...assemblage, including a distinctive manganiferous ilmenite and the presence of baddeleyite (ZrO2), indicates |  | Czamanske, Gerald K., Bennett, Pauline C., Zientek, Michael L., Weiblen, Paul W., Havach, George A., Foose, Michael P. (1986) Comprehensive bibliographies on mineralized and unmineralized layer mafic intrusions in the United States. Open-File Report Vol. 1986 (86-589) US Geological Survey doi:10.3133/ofr86589a | Report (issue) | | mineralization or ore deposit or dissemination or mine ultramafic or ultrabasic or dunite or peridotite... The Duluth Complex, Minnesota, and the Stillwater Complex, Montana, are given separate status in this contribution...bibliography on the Stillwater Complex is an update of the comprehensive bibliography in Montana Bureau of Mines...Special Publication 92, entitled "The Stillwater Complex, Montana: Geology and Guide." The bibliography...1986. All citations in the bibliography on the Stillwater Complex have been carefully checked for accuracy |  | | 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) | | from the Middle Banded series of the Stillwater Complex, Montana Received: 5 October 1995 y Accepted:...and OB-IV) of the Middle Banded series of the Stillwater complex, occurring interstitial to cumulus grains...Duke University, Box 90227, Durham, NC 27708-0227, USA Editorial responsibility: T.L. Grove Introduction...concentration of platinum group elements in the Stillwater and Bushveld intrusions (Ballhaus and Stumpfl...Olivine-Bearing zones III and IV (OB-III and OB-IV) of the Stillwater complex revealed no stratigraphic or lateral |  | | Report (volume) | | from the Lowermost Cyclic Units in the Stillwater Complex, Montana U.S. GEOLOGICAL SURVEY BULLETIN 1674-E...from the Lowermost Cyclic Units in the Stillwater Complex, Montana By PATRICIA J. LOFERSKI, BRUCE R. LIPIN...from the lowermost cyclic units in the Stillwater Complex, Montana / by Patricia J. Loferski, Bruce R. Lipin...I 19.3:1674-E 1. Chromite Montana. 2. Petrology Montana. 3. Geology Montana. I. Lipin, Bruce R. II. Cooper...Metasomatism E21 Comparison of Cyclic Units in the Stillwater E23 Calculation of Magma Thickness E24 Conclusions |  | | Journal (article/letter/editorial) | | terrestrial orthopyroxenites and norites (Stillwater Complex, Montana). We emphasizedthe REE (La, Ce, Nd, Sm...orthopyroxenite sequence(Bronzitite zone of the Stillwater Complex). An important lessonto be learned from...(StillwaterComplagioclaseseparatesfrom the Moore County cumulate plex, Papikeet al. 1995). eucrite. They...studies of cumulus orthopyroxene grains from the Stillwater Complex (Papike et al. 1995) we noted that thin...018 0 008 0.011 0.023 0.150 0.273 0.513 Moore County 0 029 0.211 0.081 0.016 0.019 0.027 0.050 0.150 |  | 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...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 |  | | Journal (article/letter/editorial) | | Volume 93, pages 438–450, 2008 Beneath the Stillwater Complex: Petrology and geochemistry of quart...iotite ± spinel hornfels, Mountain View area, Montana Jennifer A. Thomson* Department of Geology, Eastern...prospect in the Mountain View area of Stillwater County, Montana, exhibits evidence of in situ fluid-absent...of the hornfels close to the contact with the Stillwater Complex. The rocks investigated are predominantly...Keywords: Stillwater Complex, hornfels, partial melting, back reactions Introduction The Stillwater Complex |  | | Journal (article/letter/editorial) | | significant J–M and Merensky PGE reefs of the Stillwater and Bushveld complexes, respectively. However...de J–M et de Merensky, dans les complexes de Stillwater et de Bushveld, respectivement. Toutefois, en-dessous...the Bushveld Complex and the J–M Reef of the Stillwater Complex. The level of concentration of the PGE...below and at the level of the PGE horizons in the Stillwater and Bushveld complexes suggests that Cl-rich...chlorapatite. Unlike the reef horizons in the Stillwater and Bushveld complexes, apatite compositions |  | | Journal (article/letter/editorial) | | 1980 Contact-metamorphiceffects of the Stillwater Complex, Montana: the concordant iron fomation D. T. VelltMAN...b.y.), contact-concordant at the base of the Stillwater Igneous Complex, Montanao was contact-metamorphosedto...igneous body. Exchange along fractures in the Stillwater Iron Formation included limited introduction...introduction of Cu, S, and Al, probably from the Stillwater Complex. absent).Our major purposeis to evaluatethe...within the iron formation at five morphic The Stillwater Igneous Complex of southwestern along the baseof |  | | Report (volume) | | Hawkes__--__--__---(B) The Coalwood coal field, Powder River County, Montana, by Robert P. Bryson__________-_______-__-...deposits in the Southern Pilot Mountains, Mineral County, Nevada, by David A. Phoenix and James B. Cathcart___________...sections of the Coalwood coal field, Powder River County, Mont---__-__--_---_-----_---_---__-------- In...the Pilot Mountains quicksilver district, Mineral County, Nev____-___________-___---______________ In pocket...underground workings of the Mina Development Co. mine, Pilot Mountains district-_-_______-_-___-________- |  | | Report (issue) | | Weathering Gossan Geochemical Signature; Examples Stillwater Complex Cu, Ni, PGE, Co References Page (1977)...analysis. Geochemical Signature; Examples Bushveld Stillwater Complex PGE, Cu, Ni References Vermaak & Hendriks...Texture/Structure Alteration Massive magnetite-ilmenite, cumulus textures None related to ore Ore Controls...Controls Layers near top of intrusion. veins rich in ilmenite. Weathering Blocks of magnetite in soil and alluvium...Examples Lake Valley, New Mexico Philipsburg, Montana Lammereck, Austria References Farnham (1961) Prinz |  | | Journal (article/letter/editorial) | | iridium and gold were determined in chrome-spinel, ilmenite and magnetite samples from mafic and ultramafic...complexes (Bushveld, Stillwater, Rhum, Rhochrome Mine in Zimbabwe and Chambers Mine in the U.S.A.) and...chrome-spinels were depleted in Pd and Pt (often < 50 ppb). Ilmenite and magnetite samples from the Bushveld Complex...been separated into ilmenite and magnetite fractions. R10 was shown to be an ilmenite phase. The rest were...There is no preference detected for Pd and Ir. The ilmenite and magnetite fractions of 1930,66(21) have higher |  | | Journal (article/letter/editorial) | | rocks. These structures have been described from Stillwater Complex (HEss 1939, 1960; JACKSON 1961, 1963...studied slump structures in some parts of the Stillwater complex and has concluded that disturbances took...the conclusion that slump in the rocks of the Stillwater complex occurred on very gentle slopes -- probably...JACKSON (1961, 1964) from the ultramafic rocks of Stillwater are of very common occurrence in the rocks of...local unconformities in the chromitites of the Stillwater complex have been attributed by JACKSON (1961 |  | | 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...THE G AND H CHROMITITE ZONES OF THE STILLWATER COMPLEX, MONTANA By NORMAN ABSTRACT Pentlandite, pyrrhotite...occur in two chromitite zones ( G and H) of the Stillwater Complex. Detailed mineralogic studies of stratigraphic...minerals have long been known to occur in the Stillwater Complex. southwestern ~fontana (Howland, 1933; |  | | Journal (article/letter/editorial) | | StillwaterIntrusion,Montana ROBERT W. BARKER Abstract The Stillwater Intrusion in Montana is a large Precambrian...metamorphic rocksand quartz monzoniteswhich intrude the Stillwater mafic massif. Hornfelses,composed mainlyof cordieriteand...basal zone and in the ultramafic zone of the Stillwater Intrusion. Introduction sulfide-enriched areasis...1970). In the most comprehensive work on the Stillwater Intrusion, Hess (1960) describesthe mineralogical...diamond drill information was available, and the Stillwater Intrusion was relativelyunaffected by later granitic |  | | 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) | | Nelson Lead isotopes in sul®des from the Stillwater Complex, Montana: evidence for subsolidus remobilization...samples from the platiniferous J-M Reef of the Stillwater Complex were measured to elucidate the temporal...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 |  | | Journal (article/letter/editorial) | | Altered Ca-rich pyroxene and, less commonly, ilmenite and magnetite are the postcumulus phases. Exsolution...occasionally intergrown with ilmenite and magnetite. Clinopyroxene and ilmenite symplectites were observed...composition do occur. Magnetite, Cr-magnetite and ilmenite are also cumulus phases in these rocks. Norites...intrusions, as shown in the Bushveld, Skaergaard and Stillwater Complexes (e.g. Wager and Brown, 1968). The compositional...the gabbroic or noritic parts of the Bushveld, Stillwater and Skaergaard Complexes. In the Bushveld Complex |  | 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...Ocean Sciences, Duke University, Durham, NC 27708, USA 2 Department of Geological and Environmental Sciences...California State University Chico, Chico, CA 95929, USA Ni in the Peridotite Zone is largely controlled...as the J-M reef. Keywords Magmatic sulfides . Stillwater Complex . Accessory mineral assemblages . Hydromagmatic |  | | 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 |
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