 | | Report (volume) | | Phlogopite Within an Olivine Cumulate in the Stillwater Complex, Montana U.S. GEOLOGICAL SURVEY BULLETIN 1674-A...Within an Olivine Cumulate in the Still water Complex, Montana By NORMAN J PAGE and MICHAEL L. ZIENTEK U...phlogopite within an olivine cumulate in the Stillwater Complex, Montana. (Contributions on ore deposits in the...3:1674-A 1. Amphiboles Montana. 2. Phlogopite Montana. 3. Chrysolite Montana, I. Zientek, Michael L....olivine cumulate of cyclic unit 2 cast as phlogopite, annite, and siderophyllite end members A20 10. Triangular |  | Zhu, Chen, Xu, Huifang, Ilton, Eugene S., Veblen, David R., Henry, Darrell J., Tivey, Meg K., Thompson, Geoffrey (1994) TEM-AEM observations of Cl-rich amphibole and biotite and possible petrologic implications. American Mineralogist, 79 (9-10) 909-920 | Journal (article/letter/editorial) | | formations located in the Beartooth Mountains, Montana, U.S.A. Two types of amphibole and biotite were...intergrown with submicrometer-sized slabsof Cl-rich annite (2.8 wto/o),Fe-rich talc, Fe-rich clinojimthompsonite...submicroscopicsolid inclusions. Additional TEM-AEM studies on complex samplesare neededto explain the compositional heterogeneitieswith...highest Cl concentration achieved in synthetic annite is about 2 wto/ounder extremely acidic conditions...the eastern border of the Beartooth Mountains, Montana, U.S.A. Geological background and description of |  | | 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 |  | | Journal (article/letter/editorial) | | show Cl enrichment as high as that seen in the Stillwater and Bushveld complexes beneath the major stratabound...microprobe at Duke University, Durham, North Carolina, USA. Typical analytical conditions were 15 Kev acceleration...y'y' d d d s y' a y' a a w ww a a a a y' s y' Stillwater and Bushveld below PGE reefs OH FIG 3. Halogen...show compositional ranges in the Bushveld and Stillwater complexes, the Great Dyke, and the Skaergaard...mafic-ultramafic layered intrusions such as the Stillwater and Bushveld complexes (e.g., Meurer and Boudreau |  | | Journal (article/letter/editorial) | | Mineral. 19, 3-18. Kwak, T. A. P. (1981) Sector zoned annite phlogopite micas from the Mt Lindsey Sn-W-F [-Be]...PP. 635-7 Rhenium sulphide from the Coldwell complex, northwestern Ontario, Canada RHENIUM ranks as...eastern margin of Center 1 of the Coldwell alkaline complex in northwestern Ontario (Mitchell and Platt, 1982)...I. Composition of rhenium sulphide Coldwel] complex wt. % Atom. Prop. Re 48.95 0.2629 18.82 ...whether the Coldwell Re sulphide is similar to the Stillwater sulphide. The sulphur content of our material |  | | Journal (article/letter/editorial) | | lithologies from the eastern Beartooth Mountains, Montana, U.S.A. These rocks are typified by mineral assemblages...iron-formation rocks from the Beartooth Mountains, Montana, U.S.A., to establish some of the crystallographic...of older (up to 3.5 Ga) lithologies and (2) the Montana metasedimentary terrane (MMT) containing various...(Fig. 1). The Stillwater Block is typified by the 2.7 Ga Stillwater Layered Igneous Complex and its associated...The darker shade in the Stillwater block is the Stillwater Layered Igneous Complex (2.7 Ga). The Long Lake |  | | Journal (article/letter/editorial) | | shows that ferritchromit actually consists of a complex, nanometric associ3+ ation of Cr-magnetite (Mg0...difficult task of deriving information from these complex rocks. Results are easily transferred from the...Jackson (1969) from altered portions of the Stillwater Complex chromitites. Microtextural features The...(3) ferritchromit assemblages (consisting of a complex Cr-magnetite + lizardite and chlorite association)...within the reacting Al-spl. Ftc consists of a complex, multiphase association (i.e., dark- and low-contrast |  | | Journal (article/letter/editorial) | | ruffle, and quartz. Accessory quartz hosts a complex suite of HzO-NaCI(CaClz)-CO2-CH4 fluid inclusions...Introduction The Merensky Reef of the Bushveld Igneous Complex, South Africa, not only hosts the world's largest...altered to chlorite. 2. Postcumulus quartz hosts a complex suite of high-temperature fluid inclusions of the...Rustenburg Platinum Mines, southwestern Bushveld Complex. Investigations are restricted to the mineralized...the Merensky Reef. The geology of the Bushveld Complex, the structural setting of the Reef, and its petrography |  | | Journal (article/letter/editorial) | | temperaturealterationof REE-rich chlorapatitefrom the Stillwater Complex, Montana, 687 Bowers,T.S.,Burns,R.G.: Activity...ngmodel, 439 Czamanske,G.K., Bohlen,S.R.:The Stillwater Complexand its anorthosites:An accidentof magmaticunderplating...agedeterminationof theRed Mountain pluton, LaramieAnorthosite Complex,Wyoming, 21 Gallop,D.M., seeHalden,N.M., 956 Garner...A.: Heatcapacities andthermodynamicpropertiesof annite (aluminousiron biotite), 183 Hesse,R., seeVali...Evidencefor unusuallyfeldspathic liquids in theNain complex,Labrador, 1 Williams,K.L., Rock,N.M.S.,Carroll |  | | Journal (article/letter/editorial) | | contact-metamorphic aureole of the Sudbury Igneous Complex (SIC) contains less than 15 modal % hydroxysilicates...exposed near the contact of the Sudbury Igneous Complex (SIC). We focus on this rock type, as it comprises...at the northern margin of the Sudbury Igneous Complex, approximately 60 km north of the city of Sudbury...Generalized geological map of the Sudbury Igneous Complex (SIC) showing the location of the Sudbury Breccia...surrounding and along the surfaces of the structurally complex depressions of the footwall contact beneath the |  | Barkov, Andrei Y., Nikiforov, Andrey A., Barkova, Larisa P., Martin, Robert F. (2022) Occurrences of Pd–Pt Bismuthotellurides and a Phosphohedyphane-Like Phase in Sulfide Veins of the Monchepluton Layered Complex, Kola Peninsula, Russia. Minerals, 12 (5) 624 doi:10.3390/min12050624 | Journal (article/letter/editorial) | | Phase in Sulfide Veins of the Monchepluton Layered Complex, Kola Peninsula, Russia Andrei Y. Barkov 1, *,...of massive sulfides in the Monchepluton layered complex, Kola Peninsula, Russia. These veins consist of...Phase in Sulfide Veins of the Monchepluton Layered Complex, Kola Peninsula, Russia. Minerals 2022, 12, 624...adits in the Monchepluton layered basic–ultrabasic complex has led to the discovery of a member of the py... in the Monchepluton layered mafic–ultramafic complex of Paleoproterozoic (~2.5 Ga) age [1,2]. We explore |  | | Book | | elements (PGE). Using examples from the Bushveld complex of South Africa and other intrusions, this book...One Liberty Plaza, 20th Floor, New York, NY 10006, USA 477 Williamstown Road, Port Melbourne, VIC 3207,...Deposits: Examples 2.4.1 The Bushveld Complex 2.4.2 The Stillwater Complex 2.4.3 Skaergaard Intrusion 10 10...Inclusions 7.2.1 Silicate Liquid Inclusions in the Stillwater Complex 7.2.2 Other Examples of Silicate Liquid Inclusions...Inclusions 7.3.1 Fluid Inclusions in the Stillwater Complex 7.3.2 Fluid Inclusions and Hydrosaline Melt |  | Brigatti, Maria Ranca, Malferrari, Daniele, Medici, Luca, Ottolini, Luisa, Poppi, Luciano (2004) Crystal chemistry of apatites from the Tapira carbonatite complex, Brazil. European Journal of Mineralogy, 16 (4) 677-685 doi:10.1127/0935-1221/2004/0016-0677 | Journal (article/letter/editorial) | | chemistry of apatites from the Tapira carbonatite complex, Brazil MARIA FRANCA BRIGATTI1,*, DANIELE MALFERRARI1...crystals from the Tapira alkaline carbonatitic complex (Brazil) was investigated by electron microprobe...Stoppa & Liu, 1995; Pan & Fleet, 2002). The Tapira Complex is located in the southern part of a Late-Cretaceous...Late-Cretaceous, carbonatite-bearing alkaline plutonic complex which, together with kamafugites, lamproites and...Province, Brazil (APIP, Gibson et al., 1995). This complex is mostly made of bebedourite. Bebedourite is a |  | Ulmer, G. C., Rosenhauer, M., Woermann, E., Ginder, J, Drory-Wolff, A., Wasilewski, P. (1976) Applicability of electrochemical oxygen fugacity measurements to geothermometry. American Mineralogist, 61 (7-8) 653-660 | Journal (article/letter/editorial) | | illustratethe applicationof the technique to the Bushveld Complex(Flynnel a/., in press),to the StillwaterComplex(Sato...Bushveld When care was taken in method three to use a Complex, Transvaal whole-rock sample that was greater in...diameter than (2) the G-zone group of the Stillwater Complex, the zoned andesinephenocrystsof the andesite...cumulate anorthosite (An 78) in the Bushveld Igneous Complex Critical Zone (Flynn et al., 1972).This anorthosite...Temperature, | 300 Stillwater Complex Similar work has been done for the Stillwater Complexby Sato (1972) |  | | Journal (article/letter/editorial) | | settling, syenite. Introduction THE Nunarssuit complex is part of the Gardar alkaline province in South...20-30%), where ferro-salite/ hedenbergite, fayalite, annite and barkevikite are concentrated relative to alkali...layered zone of the Straumsvola nepheline syenite complex. The modal layering is expressed as concentrations...present in the mafic phases, the structurally more complex alkali feldspar beginning to crystallize. Harris...is interpreted to be a cumulus phase. Biotite (annite) and amphibole (barkevikite) appear to be largely |  | | Journal (article/letter/editorial) | | New South Wales a high level teschenitic sill complex emplaced into Permian coal measures derives from...oxygen fugacity by other assemblages (probably annite-alkali feldspar-magnetite) and generally higherfO2...element analyses from a teschenitic intrusive complex intersected by drilling associated with a coal...of sodic pyroxene, bottom right, bottom left. e Complex compositional zoning in clinopyroxene from syenite...sodic hedenbergite (he) to acmitic rims (ac). d Complex compositional zoning in amphibole crystal from |  | Benkó, Zsolt, Mogessie, Aberra, Molnár, Ferenc, Hauck, Steven, Severson, Mark, Ettinger, Karl (2018) The Influence of Thermal Differences and Variation of Cl–F–OH Ratios on Cu-Ni-PGE Mineralization in the Contact Aureole of the South Kawishiwi Intrusion, Duluth Complex. Geosciences, 8 (12) 474 doi:10.3390/geosciences8120474 | Journal (article/letter/editorial) | | Aureole of the South Kawishiwi Intrusion, Duluth Complex Zsolt Benkó 1,2, *, Aberra Mogessie 2 , Ferenc...Trunk Highway Duluth, Minneapolis, MN 55811-1442, USA; shauck@nrri.umn.edu (S.A.H.); mseverso@nrri.umn...the contact metamorphic aureole of the Duluth Complex, Cu-Ni-PGE mineralization occurs locally up to...sulfide liquid into the footwall. Keywords: Duluth Complex; South Kawishiwi intrusion; Cu-Ni-PGE mineralization;...metamorphic zones, such as in Bushveld Complex, South Africa; Portimo Complex, Finland; and East Bull Lake Intrusive |  | | Journal (article/letter/editorial) | | % chromitite (G2b) from the G seam of the Stillwater Complex. The chromitite consists of 95% massive chromite...components which thus contribute substantially to the complex solid solution represented by chromites in this...likely that many of the binary solutions in the complex system exhibit extensive, if not complete solid...chargebalanced (Na, K)A102 complexes, and an anorthitelike complex, CaA12SizOs. The other matrix components include...which does not form part of a matrix component complex such as CaAl$!iirOs, or (Na, K)AlO*, will not occur |  | Yudovskaya, M. A., Kinnaird, J. A., Udachina, L. V., Distler, V. V., Kuz’min, D. V. (2014) Role of magmatic and fluid concentrating in formation of platinum mineralization in the Lower Zone and Platreef as follows from composition of phlogopite, cumulus silicates, and sulfide melt, the northern limb of Bushveld Complex. Geology of Ore Deposits, 56 (6) 451-478 doi:10.1134/s1075701514060063 | Journal (article/letter/editorial) | | and Sulfide Melt, the Northern Limb of Bushveld Complex M. A. Yudovskayaa, b, J. A. Kinnairdb, L. V. Udachinaa...depressions of the northern limb of the Bush veld Complex. In the Turfspruit area, the Lower Zone is separated...1134/S1075701514060063 INTRODUCTION The Bushveld Complex holds more than three quarters of the world’s PGE...Vbearing titanomagnetite, Sn, and fluo rite. The complex comprises the oldest volcanic group, the Rooiberg... Fig. 1. Schematic geological map of Bushveld Complex. (1) Waterberg Group; (2) alkaline intrusion; (3) |  | | Journal (article/letter/editorial) | | and qualitative studies of a limited number of complex structures. However, as petrologists we commonly...The classification process is commonly the most complex. Data volumes from X-ray tomography are greyscale...pumice clast sample in the Bishop Tuff deposit, USA, and graphs of their range in attenuation (Gualda...least three colour values for each voxel, and more complex numerical methods can be applied for classifying...Sanidine (Or65) 2.6 -2 11.5 6 6.7 23 Biotite (Annite) 3.3 25 16.0 48 28 415 Magnetite 5.2 96 |  | Barkov, Andrei Y., Nikulin, Ivan I., Nikiforov, Andrey A., Lobastov, Boris M., Silyanov, Sergey A., Martin, Robert F. (2021) Atypical Mineralization Involving Pd-Pt, Au-Ag, REE, Y, Zr, Th, U, and Cl-F in the Oktyabrsky Deposit, Norilsk Complex, Russia. Minerals, 11 (11) 1193 doi:10.3390/min11111193 | Journal (article/letter/editorial) | | U, and Cl-F in the Oktyabrsky Deposit, Norilsk Complex, Russia Andrei Y. Barkov 1, *, Ivan I. Nikulin...U, and Cl-F in the Oktyabrsky Deposit, Norilsk Complex, Russia. Minerals 2021, 11, 1193. https://doi.org/10...portion of the Oktyabrsky deposit in the Norilsk complex (Russia). The overall variations in Mg# index,...atypical assemblages are associated with Cl-rich annite with up to 7.54 wt.% Cl, Cl-rich hastingsite with...the geochemically evolved system is evident. The complex assemblages formed late from Cl-enriched fluids |  | | Book | | be minerals. Microcline, Crystal Peak, Colorado, USA * 12 x 9x 5 om MINERALS: PRODUCTS OF A CHANGING...Calcite (septarian nodule), San Juan County, Utah, USA * 18 x 24x Bem 14 | MINERALS: PRODUCTS OF A CHANGING...Madagascar e(2x23x3em Quartz, Mount Ida, Arkansas, USA ° 14x 15 x 10 cm Corundum, Mozambique * 17 x 11...typical crystal shape. Goethite, Tintic, Utah, USA * 16.5 x 3.5 x 2.5 om Drusy These minerals have...linarite, Bingham, New Mexico, USA * 9x 75 x 2.cm Arborescent copper, Michigan, USA * 35 x 8 x 1 cm Radiating |  | | Journal (article/letter/editorial) | | Tennessee 37996, USA Mount Holyoke College, South Hadley, Massachusetts 01075, USA * Corresponding author...orthopyroxenite and anorthositic samples from the Stillwater Complex in Montana (Johnson et al. 2002) as well as albite...subduction zones: An example from Simcoe, Washington, USA. Geochimica et Cosmochimica Acta 60:1739–1749. Cadogan...Stability relations of the ferruginous biotite, annite. Journal of Petrology 3:82–125. French B. M. 1998...subduction zones: An example from Simcoe, Washington, USA”. Geochimica et Cosmochimica Acta 62:329–331. Frost |  | | Book | | whom I have explored and experienced the Bushveld Complex, and the many associates elsewhere who have shown...River in the Upper Critical Zone of the Bushveld Complex. Chromitite layers in anorthosite frequently bifurcate...Subsequent work by H.H. Hess and E.D. Jackson (Stillwater) and B.V. Lombaard (Bushveld) revealed problems...conversion of primary to derivative magmas. Thus a complex series of "integration stages" coupled with "differentiation...that are over-ruled by the likelihood of more complex processes operating at crystal boundaries and between |  | | Journal (article/letter/editorial) | | DEPAOLOand G. J. WA~~ERBURG 999 Sm-Nd age of the Stillwater complex and the mantle evolution curve for neodymium...Al-OH ions 863. Al-Si substitution 1467 Alaska, USA 183 Alberta, oil 1187,1387,157X albite, 0 isotopes...hydrothermal 869 anhydrite, inclusions 1907 951 ankerite annite 1151 ANNOUNCEMENTS: Assembly on Current and Future...isotopes thermodynamics 1753 anorthite, anorthosite, Stillwater 999 anoxic sediments 339,429 anoxic water 471...chalconvrite, artificial chalk,-bituminous Charles River, USA charnockite Chemical Oceanography (BR) chemical potential |
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