 | Rifai, Kheireddine, Özcan, Lütfü-Çelebi, Doucet, François R., Rhoderick, Kyle, Vidal, François (2020) Ultrafast Elemental Mapping of Platinum Group Elements and Mineral Identification in Platinum-Palladium Ore Using Laser Induced Breakdown Spectroscopy. Minerals, 10 (3) 207 doi:10.3390/min10030207 | Journal (article/letter/editorial) | | Drilling, 2990 N Townsend Ave, Montrose, CO 81401, USA; krhoderick@firstdrilling.com (K.R.); vidal@emt.inrs...containing palladium and platinum from the Stillwater mine in Montana, USA, was cut and a LIBS scan of 40 mm ×...zone of the Stillwater Igneous Complex, a layer mafic intrusion in Southwestern Montana. There are three...three generalized zones within the complex, the Basal, the Ultramafic and the Banded Series. The Banded...is similar to the Merensky Reef of the Bushveld complex of South Africa. The JM Reef consists of one to |  | Rifai, Kheireddine, Michaud Paradis, Marie-Chloé, Swierczek, Zofia, Doucet, François, Özcan, Lütfü, Fayad, Alejandro, Li, Jing, Vidal, François (2020) Emergences of New Technology for Ultrafast Automated Mineral Phase Identification and Quantitative Analysis Using the CORIOSITY Laser-Induced Breakdown Spectroscopy (LIBS) System. Minerals, 10 (10) 918 doi:10.3390/min10100918 | Journal (article/letter/editorial) | | were used in this study were collected at the Stillwater platinum group element mine in the United States...in the present study come from the Stillwater Complex, Montana (USA). The USGS organization recently published...Mountain areas geological survey data from the same complex. The SEM-EDS technology used for all samples was...out on drill core fragments from the PGE Stillwater mine in USA [23]. The main objective of that study...samples Origin Stillwater complex, USA Mineral content Major minerals: bytownite (feldspar), zoisite |  | | Report (issue) | | Bytownite Na0:3¡0:1 Ca0:7¡0:9 Al1:7¡1:9 Si2:3¡2:1 O8 c 2001 Mineral Data Publishing, version 1.2 ° ...Carlsbad, and Pericline laws, developed in simple to complex combinations. Physical Properties: Cleavage: Perfect...the Bushveld complex, Transvaal, South Africa. In the USA, in the Stillwater complex, Montana; from Cornwall...Chandrasekhar, and H.D. Megaw (1966) The structure of bytownite (`body-centered anorthite'). Acta Cryst., 21, |  | White, L. F., Kizovski, T. V., Tait, K. T., Langelier, B., Gordon, L. M., Harlov, D., Norberg, N. (2018) Nanoscale chemical characterisation of phase separation, solid state transformation, and recrystallization in feldspar and maskelynite using atom probe tomography. Contributions to Mineralogy and Petrology, 173 (10) doi:10.1007/s00410-018-1516-8 | Journal (article/letter/editorial) | | probe tomography (APT) is conducted on Ca-rich (bytownite) and Na-rich (albite) plagioclase reference materials...plagioclase reference materials (Amelia albite and Stillwater bytownite) appear chemically homogenous, and yield...uncertainty of published data. Within microstructurally complex materials, APT can resolve chemical variations...Pacific Northwest National Laboratory, Richland, WA, USA 5 GeoForschungsZentrum Potsdam Telegrafenberg,...temperature metamorphism (Anderson and Burnham 1983), complex magma cooling and mixing (i.e. Hibbard 1981), and |  | | Journal (article/letter/editorial) | | chemically zoned plagioclasecrystals reported in the Stillwater, Skaergaard,and Kiglapait intrusions. The cooling...difference between the interdiffusion coefficientsfor bytownite (dry, I atm) and peristerite (HrO present, 1500...independent methods. ExpnnnrnNTAL PRoCEDURE The bytownite used for this study is from the same Fig. L TEM...TEM bright-field photomicrographs of Stillwater bysampleusedby Grove et al. (198a)and is from the Stilltownite...strong diffraction contrast water igneous complex, Montana. The sample contains of (03T) Huttenlocher |  | | Report (volume) | | funnel-shaped intrusive complex associated with younger alkalic rocks of the McClure Mountain Complex UNITED STATES...McClure Mountain Complex showing location and geologic setting of the mafic-ultramafic complex at Iron Mou...of closely packed plagioclase crystals (sodic bytownite) in gabbro of the layered series_____________...rocks form a small layered funnel-shaped intrusive complex, including several smaller associated discordant...magnetite iron ore and are made up principally of bytownite-labradorite, monoclinic pyroxene, magnesiumrich |  | | Journal (article/letter/editorial) | | 94720-4767, USA Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, USA Received 31 May...Laboratory, 7000 East Avenue, Livermore, CA 94550, USA. E-mail addresses: cassata2@llnl.gov (W.S. Cassata)...feldspar Arrhenius plots reflects the confluence of complex chemical, microtextural, and structural changes...coordination with 40Ar/39Ar data to better constrain complex thermal histories and determine which alkali feldspars...Huttenlocher 70 labradorite 90 P1 200 An bytownite anorthite Fig. 1. Phase diagram for alkali and |  | | Journal (article/letter/editorial) | | Old Main, 1 University Dr., Pembroke, NC 28372, USA; chaumba@uncp.edu Received: 24 May 2017; Accepted:...Great Dyke, Bushveld Complex in South Africa, the Stillwater Complex in Montana, USA, and the Noril’sk Ni-Cu-(PGE)...Bushveld Complex [7] and in the J-M reef of the Stillwater Complex [8–11]. In the Stillwater Complex, researchers... similar to those described from the Bushveld Complex [55,56]. The footwall fault (Figure 2b) is encountered...at Fayetteville State University, North Carolina, USA [58]. For all silicate samples, the Hyperprobe was |  | | Journal (article/letter/editorial) | | and cryptic layering of the Kunene anorthosite complex of SW Angola and Namibia ZENA1DE C. G. SILVA Departmento...Abstract The gabbro-anorthosite complex of SW Angola and Namibia (Kunene Complex) is dominated by anorthosite-troctolite... Fo79 ) are common in the western area of the complex with plagioclase becoming gradually less anorthitic...is more pronounced in the northern half of the complex where rocks are darker, fresh, and the rhythmic...Introduction THE exposed portion of the Kunene Complex of Angola and Namibia (Fig. 1) is the middle part |  | | Journal (article/letter/editorial) | | and from one sample of anorthosite from the Stillwater Complex. Three of the Greenhills samples are from....7 5 Source oJ plogioclase anorthosite, Stillwater complex layered series eucrite, Greenhills layered...el a\,.,1963) The calculated powder data for bytownite given by Borg and Smith (1968) difier appreciably...superior they were used to calculate 7* for the Stillwater specimen. The standard deviation of 7* is less...at., (1965) Locations marked "x" refer to the stillwater plagioclase and the four plagioclasesfrom Greenhills |  | | Journal (article/letter/editorial) | | integral part of the basement gneisses. These are bytownite anorthosites and are characteristically associated...rocks. The plagioclase varies from andesine to bytownite. BOULANGERstresses the probable duality of origins...complexes. Anorthosite is found in both these types of complex, although it seems to occur only erratically and...recorded as a minor facies of the Bay of Islands complex that THAVE~, 621 Aufs~tze (1960, p. 9.56) regards...(HARPCM,1957) Massive anorthosites of Kunene basic complex, Angola, S.W. Africa (SmPsos and OTTO, 1960) Ankafotia |  | | Report (issue) | | Geological Society of America Memoir 80 STILLWATER IGNEOUS COMPLEX, MONTANA A QUANTITATIVE MINERALOGICAL STUDY...Edward Sampson began the study of the Stillwater complex, Montana, in 1930. The writer commenced a detailed...detailed study of the mineralogy of the complex in 1935 after several periods in the field in preceding...Peoples would write the general geology of the complex, Howland the floor rocks and sulfide deposits,...have published a number of short papers on the complex. (Peoples, 1933; 1936; Howland, Peoples, and Sampson |  | | Journal (article/letter/editorial) | | h i t e , G r a s s V a l l e y ( 1 4 ) ; b : bytownite, Crystal Bay (8); c: labradorite, Lake County...et al.,1977). The sameis true for Crystal Bay bytownite (Fig. 4a), which has never been associatedwith...dike An 89 #332 StiLlwater, Igneous, gabbro from basal zone of Stillwater complex H. R. Wenkand Nord...Nord (1971) Montana basalt (1968) ll ln 90, Yz 746b2 sarne sanple as 4 Metamorphic, anphibolite...presenceof diffuse e reflections in Crystal Bay bytownite (a) and L a k e C o u n t y l a b r a d o r i |  | | Journal (article/letter/editorial) | | Arm and the Central Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation...Arm and the Central Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation...Arm and the Central Sector of Mashava Igneous Complex in south central Zimbabwe from an investigation...of the economically important Mashava Igneous Complex (MIC) in Zimbabwe was conducted using petrographic...into its origin. The MIC, an ultramafic-mafic complex located in the western extremity of the Masvingo |  | PIRRIE, D., POWER, M. R., ANDERSEN, J. C. Ø., BUTCHER, A. R. (2000) Platinum-group mineralization in the Tertiary Igneous
Province: new data from Mull and Skye, Scottish Inner Hebrides, UK. Geological Magazine, 137 (6) 651-658 doi:10.1017/s0016756800004520 | Journal (article/letter/editorial) | | abundant platinum-group minerals in the Rum Central Complex. In this paper we report for the first time the...Tertiary Ben Buie intrusion on Mull and the Cuillin Complex of Skye, Inner Hebrides, Scotland. The platinumgroup...phases. In the Peridotite Series of the Cuillin Complex, the platinum-group minerals are dominated by laurite...1991; Andersen et al. 1998), the Kruuse Fjord complex (Arnason et al. 1997), the Nordre Aputitêq intrusion...(Arnason & Bird, 1994) and the Kap Edvard Holm complex (Bird et al. 1995) (Fig. 1). These intrusions and |  | | Journal (article/letter/editorial) | | TEM observationsof coexisting andesine(An3e)and bytownite (Anes);and (c) TEM and crystallographicstudiesof...rangeof bulk compositionAna6Ane6 by nucleation f bytownite assemblage shouldproducean equilibriumoligoclase/andesine...(Crawford, 1966;Evans, 1964). Coexistingandesineand bytownite have been reported in carbonate rocks near Sidney...535ot20oC(Spear,1980,1981). The coexisting andesine * bytownite from Thetford, Vermont, is particularly important... At Thetford, coexisting andesine (Anrs) and bytownite (Anrr) occur with amphibole of a unique composition |  | | Journal (article/letter/editorial) | | standards a mixture of silica glass, olivine and bytownite in equal proportions was prepared. Each of these...Rifkol, W. Greenland . . . . . . . . Stillwater Complex, Montana . . . s . Ojamo, Lohja, Finland . . ...Calcic Plagiocla.80 s9 s 10 Calcic Plagioclase Bytownite S 181 Albite s 40 Cleavelandite S 98 S 126 Amazonite...Egersund, Norway ........ Stillwater Complex, Montana ....... Stillwater Complex, Montana ....... .............Hange, Egereund, Norway ........ ...... Stillwater Complex, Montana. Webster, N. Carolina. .......... Kaalamo |  | | Journal (article/letter/editorial) | | melanorite and its stratiform pegmatoids, Bushveld Complex, South Africa – characteristics, timing and origins...Two Rivers Platinum Mine (eastern limb, Bushveld Complex) is fully enclosed within a UG2 melanorite that...Introduction The chromitite seams of the Bushveld Complex are the most laterally extensive on Earth, traceable...form pipes and sheet-like bodies in the Bushveld Complex (e.g. Viljoen and Scoon, 1985; Cawthorn et al....of the world-class PGE deposits in the Bushveld Complex (Merensky Reef, UG2, Platreef) are associated with |  | 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...Euerites" and Anorthosites) These are mainly bytownite-bronzite mesocumulates (especially the plagioclase...solely to this zone as evidenced by the data on a bytownite-bronzite cumulate near the base of Member 3 (Table |  | | Report (issue) | | Geology of North Snowy Block, Beartooth Mountains, Montana ROL LAND R . REID University of Idaho Moscow...W ILLIA.i\1 J. M cMA1'!Nls Montana State University Bozeman, Montana 59715 JOHN C. P ALMQUIST Lawrence...Endowment and Research Foundation, Montana State University, Bozeman, Montana, for administering the grant...thanks. The contributions of Charles C. Bradley, Montana State University, who worked with us through the...rimming the other in part, suggest derivation from a complex terrain in which at least two "events" had occurred |  | | Journal (article/letter/editorial) | | Huronian granite and other rocks of the basement complex in the region of the high scarp and interior plateau...a brief description of the gabbro-anorthosite complex, reference being made to a few earlier papers in...commonly, bytownite. The gabbros are described as coarse; the feldspar is labradorite, bytownite, and anorthite...red desert sandstone. Unshaded areas: Basement complex, chiefly granite-gneiss. Enclosed unshaded areas:...such as found in the upper parts of the Stillwater Complex, Montana. In any case the presence of melanocratic |  | | Journal (article/letter/editorial) | | Japan ISSN: 1342-937X The Kondapalli Layered Complex, Andhra Pradesh, India : A Synoptic Overview C...June 25, 1997) Abstract The Kondapalli Layered Complex (KLC) consists dominantly of gabbroic and anorthositic... systematic studies on the Kondapalli Layered Complex (KLC) in the Krishna district of Andhra Pradesh...(Leelanandam, 1967b, 1969a, 1970). The KondapalliLayered Complex (KLC) in its entirety, was first recognised by...KLC represents a discontinuous stratiformtype complex enveloped by a much greater volume of charnockite |  | | Journal (article/letter/editorial) | | limitations imposed by the variety of sites, the complex microstructures and the disordering, limit the...Introduction The plagioclase feldspars, which form a complex series of aluminosilicates in the compositional...22.4 0.4 Crystal Bay, Minnesota. EPR An66 Bytownite An77 Associates wide-line N M R spectrometer...studied at room temperature and labradorite and bytownite at 77K. Oligoclase and Andesine The principal...the site 1 magnetic axes Labradorite An66 and Bytownite Anv~ The EPR spectra of specimens A n 6 6 and |  | | Journal (article/letter/editorial) | | basic types from sodic labradorite to medium bytownite, with symmetrical extinctions in the zone normal...former cases it is enclosed in hornblende or builds complex aggregates with augite : in the latter the distribution...flank of Karaoki (VIII. 21). The former contains bytownite near An80 and is noteworthy for its brown hornblende...(VIII. 3) is almost eucritic, the felspar being bytownite-anorthite An90. The mafic minerals occur in reaction...the colourless augite, which forms the base of complex spinel intergrowths. Micrometric analyses of these |  | | Journal (article/letter/editorial) | | Most of the olivine has been heavily altered to a complex of iron oxide-hydroxide lamellae, in many grains...opx,ol o Skaergaard o Gough Is. " " X Stillwater Bushveld Critical Series gabbro cpx, opx...Marginal Border Group (Brown, 1957), and the Stillwater Lower Gabbro Zone (Hess, 1960) The alteration...Haggerty and Baker (1967) but is evidently more complex. At high temperature, probably during eruption...marked similarity to gabbroic rocks of the Stillwater Complex, particularly those of the Anorthosite Zone |
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