 | | Journal (article/letter/editorial) | | 1980 Contact-metamorphiceffects of the Stillwater Complex, Montana: the concordant iron fomation D. T. VelltMAN...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...the iron formation at five morphic The Stillwater Igneous Complex of southwestern along the baseof the |  | | Report (issue) | | Stillwater Complex, Montana: Rock Succession, Metamorphism, and Structure of the Complex and Adjacent...999 Stillwater Complex, Montana: Rock Succession, Metamorphism and Structure of the Complex and Adjacent...----Petrology and rock succession of the Stillwater Complex and adjacent rocks----------------------...metasedimentary rocks in the contact aureole of the Stillwater Complex -----------------------------------------Areal...---------------------------------------------------Stillwater Complex ---------------------------------------- |  | | Journal (article/letter/editorial) | | Volume 93, pages 438–450, 2008 Beneath the Stillwater Complex: Petrology and geochemistry of quartz-plagioclasecordierite...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...the hornfels close to the contact with the Stillwater Complex. The rocks investigated are predominantly...mafic volcanogenic components. Keywords: Stillwater Complex, hornfels, partial melting, back reactions |  | | 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 |  | | Journal (article/letter/editorial) | | anthophyllite/cummingtonite-cordierite rocks from the upper unit of the Ordenes Complex (Galicia, NW Spain)...are described for the first time in the Ordenes Complex (Galicia, NW Spain). The first type exhibits an...lowpressure amphibolitic gneisses formed mainly of cummingtonite, cordierite, andalusite and garnet. The first...uppermost unit of the Ordenes Complex, in which the anthophyllite-cummingtonite rocks are located, appears...evolution, anthophyllite, cummingtonite, cordierite, low-Ca amphibolites, Ordenes Complex, NW Spain. 1. Introduction |  | Schisa, Paul, Boudreau, Alan, Djon, Lionnel, Tchalikian, Arnaud, Corkery, John (2015) The Lac Des Iles Palladium Deposit, Ontario, Canada. Part II. Halogen variations in apatite. Mineralium Deposita, 50 (3) 339-355 doi:10.1007/s00126-014-0541-4 | Journal (article/letter/editorial) | | Block Intrusion (MBI) of the Lac des Iles Igneous Complex shows two pronounced trends in the halogens. Apatite...Sciences, Duke University, Box 90227, Durham, NC 27708, USA e-mail: boudreau@duke.edu L. Djon : A. Tchalikian...Block Intrusion (MBI) of the Lac des Iles Igneous Complex (LDIC) is a small, crudely concentrically zoned... Miner Deposita Complex (the UG-2 chromitite and the Merensky Reef) and the Stillwater Complex (the J-M reef)...between the Clrich apatite of the Bushveld and Stillwater complexes and the typically Cl-poor (<10 mol% |  | | Report (issue) | | from other stratiform bodies such as the Bushveld Complex, South Africa (Wager and Brown, 1968; Visser and...and von Gruenewaldt, 1970), Stillwater Complex, Montana (Hess, 1960; Jackson, 1961; Page, 1977), and Muskox...(1972^ documented evidence that in the Stillwater Complex, Montana, olivine within a single cumulate layer...original primocryst. Maal0e (1976) documented the complex compositional zoning of plagioclase in the Skaergaard...Continental strati form intrusions, such as the Stillwater, Bushveld, and Muskox, generally have chromite |  | | Journal (article/letter/editorial) | | 0022-3530/91 $3.00 Cordierite-Cummingtonite Fades Rocks from the Gold Brick District, Colorado by DRUMMOND...1991) INTRODUCTION Coexisting cordierite and cummingtonite are relatively rare in Ca-poor, aluminous amphibolites...relationships associated with cordierite- and cummingtonite-bearing assemblages have remained ambiguous...ABSTRACT The unusual association of cordierite and cummingtonite (±gedrite +chlorite+ biotite + ilmenitc + plagioclase...plagioclase + quartz. The assemblage gedrite 4- cummingtonite + chlorite + biotite + ilmenite + plagioclase |  | | Journal (article/letter/editorial) | | 649-663, 1995 Thermodynamicsand petrology of cummingtonite* BrnNlnn W. Ev,lxs. M.q,RKS. GHronso Departmentof...Seattle,Washington98195,U.S.A. Ansrucr Natural cummingtonite encompassesvirtually the entire compositional...full range for cummingtonite is at least 400-800 'C and < I - I 5 kbar. Cummingtonite is also a critical...magma chambers. The solution properties of cummingtonite reflect the entropic and enthalpic consequencesof...sites appearsto be site dependent. Magnesio-cummingtonite from 0 to about l0o/ogrunerite is less stable |  | | Journal (article/letter/editorial) | | Almeida (2003)], or dilution (J–M Reef, Stillwater Complex: Polovina et al. 2004). However, it is still...highmetamorphic-grade terranes of the basement Barbacena Complex (Hasuà et al. 1988), (ii) the Archean highmetamorphic-grade...highmetamorphic-grade sedimentary rocks of Varginha Complex (Hasuà et al. 1990, Zanardo et al. 1990, Zanardo...polycyclic tectonometamorphic events that reflect a complex structural pattern (Ebert 1956, 1957, 1968, 1971...consists essentially of bands of amphiboles (cummingtonite–grunerite, tremolite–ferroactinolite–actinolite) |  | | Report (volume) | | Wilderness Study Area, Park and Sweet Grass Counties, Montana By U.S. GEOLOGICAL SURVEY and U.S. BUREAU of MINES...wilderness study area, Park and Sweet Grass Counties, Montana B. Geophysical interpretations C. Economic appraisal...wilderness study area, Park and Sweet Grass Counties, Montana D. Geothermal resource STUDIES RELATED TO WILDERNESS-WILDERNESS...Wilderness study area, Park and Sweet Grass Counties, Montana. (Studies related to wilderness-Wilderness areas)...forest lands in the North Absaroka study area, Montana, which is being considered for wilderness designation |  | | Journal (article/letter/editorial) | | as in the complex distribution of PGE, Au, and Ag mineral assemblages. New types of complex Pt and Pd...the first phase of the multiphase Monchegorsk Complex. These intrusions had attracted attention for a...Moreno et al., 1999; Oberthür et al., 2002, 2004). Complex PGE oxides were described for the first time from...remains whether PGE–Cu– Fe complex oxides are chemical compounds or complex nanoaggregates of several...Early Proterozoic gabbro–labradorite intrusive complex of Monche–Chuna–Volch’i and Losevy tun- dras (Main |  | | 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...exploration led to the discovery and development of the Stillwater mine and the discovery of gold-copper-silver |  | | Journal (article/letter/editorial) | | The Carr Boyd Rocks Complex is a small layered ultramafic to mafic intrusive complex of Archaean age about...petrographic studies. These studiesshow that the complex was formed from at least three compositionallydifferent...1971; Naldrett and .Gaspirini, 25 km. The layered complex under discussionintrudes 1971; Woodall and Travis...geochemicalsurveys. eralizedparts,on the westernmargin of the complex The broaddistributionof rock typesand the location...General Geology of the Complex x The interpretation of this stratiform complex is based The mineralization |  | | Journal (article/letter/editorial) | | cores of many northern Rocky Mountain uplifts in Montana, Wyoming, and South Dakota, and in the southwesternstates...associations vary widely: in the Ruby Mountains of Montana, the iron-formation is part of a metasedimentarysequencethat...by the the coresof many oœthe separaterangesin Montana, State Surveysof Minnesota,Wisconsin,and Michi"Geologyof...Iron-formation is present within the "basement complex" of the Lake Superior region in at least two places:the...matrix materials. The granules are mineralogically complex;they containwidely differentproportionsof the iron |  | | Report (issue) | | Deposits of the Tobacco Root Mountains, Southwestern Montana GEOLOGICAL SURVEY PROFESSIONAL PAPER 1187...Deposits of the Tobacco Root Mountains, Southwestern Montana By HAROLD L. JAMES GEOLOGICAL SURVEY PROFESSIONAL...deposits of the Tobacco Root Mountains, southwestern Montana. (Geological Survey professional paper ; 1187)...Supt. of Docs. no.: I 19.16:1187 1. Iron ores--Montana--Tobacco Root Mountains. 2. Geology, stratigraphic-Pre-Cambrian...map of the Copper Mountain area, Madison County, Montana ____________________________________________ In |  | Godel, Bélinda, Rudashevsky, Nikolay S., Nielsen, Troels F.D., Barnes, Stephen J., Rudashevsky, Vladimir N. (2014) New constraints on the origin of the Skaergaard intrusion Cu–Pd–Au mineralization: Insights from high-resolution X-ray computed tomography. Lithos, 190. 27-36 doi:10.1016/j.lithos.2013.11.019 | Journal (article/letter/editorial) | | investigations. Our HRXCT analyses reveal the complex textural relationships between Cu-rich sulfides...class (e.g., D Merensky Reef of the Bushveld Complex in South Africa) account for almost all of the...(Miller Jr and Ripley, 1996), the Rincon del Tigre Complex in Bolivia (Prendergast, 2000) and the Stella intrusion...of the Bushveld Complex in South-Africa or the J-M Reef of the Stillwater Complex in USA (Naldrett, 2004...consisting of amphiboles (tremolite, hornblende, cummingtonite and pargasite), biotite, albite-rich plagioclase |  | | Journal (issue) | | UNDERSØGELSE BULLETIN No. 106 THE FISKENÆSSET COMPLEX, WEST GREENLAND PART A PRELIMINARY STUDY OF THE...BOGTRYKKERI 1973 A/S Abstract The Fiskenæsset complex, which occurs as conformable layers up to 1.5 km...sequence of lithological zones is observed in the complex as follows: 1. Pyroxene Amphibolite; 2. Ultramafic...localised along the contact of zones 8 and 9. The complex has internal sub-complexes within which its upper...deformation accounts for the repeated stratigraphy. The complex was subsequently double folded and metamorphosed |  | | Journal (article/letter/editorial) | | (Meddr arønløn4 188,6). No. t06 The Fiskenæsset Complex, West Greenland. Part I. A prelimlnary study of...UNDERSØGELSE BULLETIN No. 106 THE FISKENÆSSET COMPLEX, WES'T GREENLAND PART I. A PRELIMINARY STUDY...PLATES KØBENHAVN 1973 Abstract The Fiskenæsset complex, which occurs as conformable layers up to 1.5 km...sequence of lithological zones is observed in the complex as follows: 1. Pyroxene Amphibolite; 2. Ultramafic...localised along the contact of zones 8 and 9. The complex has internal sub-complexes within which its upper |  | | Journal (article/letter/editorial) | | 20059, USA Branch, Code 691, NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA 3Faculty...rock 399 © Meteoritical Society, 2003. Printed in USA. 400 G. Kletetschka, T. Kohout, and P. J. Wasilewski...Minnesota 7.76 10 Rhyolite tuff, Frying Pan Basin, Montana 14 11 Rhyolite, Castle Rock, Colorado 7.3 12 Rhyolite...Colorado 7.1 23 Latite porphyry, Bear Paw Mountains, Montana 7.9 24 Tonalite (quartz diorite), San Diego County...County, California 9.41 26 Dacite, N. W. of Helena, Montana 5.73 27 Hornblende andesite, Mt. Shasta, California |  | | Report (issue) | | Iron Deposits of the Southwestern Ruby Range, Montana , , 'A " U,S. GEOLOGICAL SURVEY PROFESSIONAL...Iron Deposits of the Southwestern Ruby Range, Montana By HAROLD L. JAMES With a section on THE KELLY...mineral deposits of the southwestern Ruby Range, Montana UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...iron deposits of the southwestern Ruby Range, Montana. (U.S. Geological Survey professional paper ; 1495)...Geology, Stratigraphic Precambrian. 2. Geology Montana Ruby Range. 3. Iron ores MontanaRuby Range. I. |  | | Journal (article/letter/editorial) | | cordierite; chl, chlorite; ctd, chloritoid; cu, cummingtonite; di, diopside; ep, epidote; g, garnet; ged,... staurolite, talc, anthophyllite, gedrite, cummingtonite, orthopyroxene, the aluminosilicates and quartz...due for revision (Holland & Powell, 2006). Cummingtonite forms an invariant assemblage with orthoamphibole...and 665 °C (labelled as Ô[i8]Õ on Fig. 1). Cummingtonite–cordierite parageneses in this system are restricted...mineral assemblage evolution in these rocks. Cummingtonite-bearing equilibria are restricted to high-temperature |  | Wilkinson, J. F. G., Duggan, M. B., Herbert, H. K., Kalocsai, G. I. Z. (1975) The Salt Lick Creek layered intrusion, East Kimberley region, Western Australia. Contributions to Mineralogy and Petrology, 50 (1) 1-23 doi:10.1007/bf00385218 | Journal (article/letter/editorial) | | intrusives within the Lower Proterozoie Lamboo Complex in the East Kimberley region of Western Australia...classic layered complexes as the Stillwater and Bushvcld. The Lamboo Complex has been described in detail...located at the northern extremity of the Lamboo Complex, intrudes granulite facies representatives of the...+ F e ~+ + M n 100 Mg Mineralogy Olivine Cummingtonite Zoisite etc. Ph[ogopite Olivine Serpentine...diffraction), bronzite has been altered to cummingtonite, and augite to uralite and ehlorite. In some |  | | Journal (article/letter/editorial) | | forearc mantle serpentinites of the Rio San Juan Complex, Dominican Republic B. M. SAUMUR1,2,* 1 2 AND...Cr-spinel in serpentinites from the Rio San Juan Complex in the Dominican Republic. These rocks originated...high-temperature minerals, such as talc, tremolite and cummingtonite, are trace constituents. The observed zoning...Pedro Garcia; PPC, Puerto Plata Complex; RSJC, Rio San Juan Complex. 118 ZONED CR-SPINEL AND FERRITCHROMITE...subductionrelated units of the Rio San Juan complex (RSJC), the Puerto Plata complex, the Pedro Garcia inlier, the |  | | Journal (article/letter/editorial) | | Worcester Polytechnical Institute, Worcester, MA 01609, USA CarbMinLab, Department of Earth, Ocean, and Atmospheric...University of Pennsylvania, Philadelphia, PA 19104, USA; jlwilcox@seas.upenn.edu Correspondence: cmwoodall@wpi...magnesium-bearing mine tailings. The Stillwater mine in Nye, Montana produces copper, nickel, and PGMs,... along with 1 Mt of tailings each year. Stillwater tailings samples have been characterized, revealing...structures at low-cost ambient conditions. The Stillwater tailings could be useful for developing strategies |
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