 | | Report (issue) | | Pd0.27 Ni0.14 )Σ=1.01 S1.00 . (2) Stillwater complex, Montana, USA; by electron microprobe, corresponding...Forms a series with vysotskite; dimorphous with cooperite. In layered mafic intrusives, formed at high...magmatic temperatures. Association: Sperrylite, cooperite, laurite, platinum (Potgietersrus district, South...chalcopyrite, cubanite, nickelian mackinawite, gold, cooperite, vysotskite, moncheite, isoferroplatinum, kotulskite...keithconnite, palladian tulameenite (Stillwater complex, Montana, USA). Distribution: One of most common |  | | Report (issue) | | 562(3) Z=8 X-ray Powder Pattern: Lac des Iles complex, Canada. Easily confused with braggite. 2.846 (100)...Russia; by electron microprobe. (2–3) Stillwater complex, Montana, USA; by electron microprobe. Polymorphism...Chalcopyrite, millerite, nickelian pyrite, linnaeite, cooperite (Noril’sk region, Russia); pentlandite, pyrrhotite...cubanite, nickelian mackinawite, gold, braggite, cooperite, moncheite, isoferroplatinum, kotulskite, keithconnite...palladian tulameenite (Stillwater complex, Montana, USA); hongshiite, cooperite, sperrylite, isomertieite |  | | Report (issue) | | Cooperite (Pt, Pd)S c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Tetragonal. Point...Pd0.01 Ni0.03 )Σ=1.02 S0.98 . (2) Stillwater complex, Montana, USA; by electron microprobe, corresponding...Bushveld complex, Transvaal. In the Freetown complex, Sierra Leone. From the Stillwater complex, Montana;...Cressy, Merced Co., California, USA. In Canada, in the Lac des Iles complex, Ontario, and the Tulameen district...1301; Harvard University, Cambridge, Massachusetts, USA, 101935. References: (1) Palache, C., H. Berman, |  | | Report (issue) | | 856(1) Z=4 X-ray Powder Pattern: Stillwater complex, Montana, USA. 0.7874 (100), 0.8623 (80), 0.8847...Rh (1) 59.6 41.7 Total 101.3 (1) Stillwater complex, Montana, USA; by electron microprobe, corresponding...found in heavy mineral concentrates (Stillwater complex, Montana, USA). Association: Platinum, Pt–Fe alloy...alloy, gold, moncheite, kotulskite, merenskyite, cooperite, braggite, vysotskite, sperrylite, pyrite, chalcopyrite...graphite (Stillwater complex, Montana, USA). Distribution: In the USA, from the Stillwater complex, Montana |  | | Journal (article/letter/editorial) | | Pt–Pd SULFIDE IN THE J–M REEF OF THE STILLWATER COMPLEX, MONTANA Chusi LI and Edward M. RIPLEY Department...Indiana 47401, USA Abstract Pt–Fe alloy (Pt3Fe) in the J–M Reef of the Stillwater Complex, as exposed in...in the Stillwater mine, in Montana, occurs intergrown with secondary Fe–Ni–Cu sulfide; together, they...they replace a Pt–Pd sulfide (braggite or cooperite). It also appears as discrete grains associated with...samples (>20 vol.%) from the J–M Reef at the Stillwater mine and elsewhere along the strike of the reef |  | | Journal (article/letter/editorial) | | formation of actinolite/tremolite, and then, cooperite and moncheite were altered to Pt–Fe alloy where...(PdTe), sperrylite (PtAs2), irarsite (IrAsS), cooperite (PtS), sudburyite (PdSb), and Pt–Fe alloy. Primary...mafic–ultramafic intrusions, such as the Bushveld Complex in South Africa, the Noril’sk Ni–Cu– (PGE) district...district in Siberia, and the Stillwater Complex in the USA, is commonly thought to be magmatic (Campbell...reef in the Bushveld Complex (Li et al. 2004) and JM reef in the Stillwater Complex (Boudreau and McCallum |  | | Journal (article/letter/editorial) | | Mineralogy and Petrology (2000) 68: 63±73 Synthetic ``Cooperite'', ``Braggite'', and ``Vysotskite'' in the system...observed at 1100 C are ``cooperite'' and a melt, at 1000 C ``cooperite'', ``braggite'', and a melt...melt and at 900 C ``cooperite'', ``braggite'', ``vysotskite'', Ni1ÿxS, and a melt. At 1100 C the maximum...Pd-free ``cooperite'' is 2.7 atomic per cent and the Pd-content limit in Nifree ``cooperite'' is 12.8...ideal, Pd-free ``cooperite'' is 3.3 atomic per cent and the Pd-content in Ni-free ``cooperite'' is 13.7 atomic |  | | Journal (article/letter/editorial) | | Merkle Æ Sabine M.C. Verryn Cooperite and braggite from the Bushveld Complex: implications for the miscibility... Abstract Analyses of the Pt-Pd±Ni sulphides cooperite, braggite, and vysotskite reported from worldwide...continuum of compositions between vysotskite and cooperite, with no obvious miscibility gap. This is contrary...between cooperite and braggite, and the established compositional gap between co-existing cooperite and braggite...only unambiguous way of distinguishing between cooperite and braggite is to obtain structural information |  | Cabri, Louis J., Laflamme, J. H. Gilles, Stewart, John M., Turner, Kent, Skinner, Brian J. (1978) On cooperite, braggite, and vysotskite. American Mineralogist, 63 (9-10) 832-839 | Journal (article/letter/editorial) | | AmericanfrIineralogist,Volume63, pages832-839,I 978 On cooperite,braggite,and vysotskitel Louts J. Cesnt, J. H...Abstract phase Detailedmineralogicalanalysesol cooperite,braggite,and vysotskite,togetherwith of identity...uncertaintyregarding to be PdS vysotskite (Pt,Pd)S and cooperite(PtS;P4r/mmc),one may considerbraggite (Pd,Pt)S(P4z/m)'...not documented in detail, from the Stillwater Complex of Montana (Cabri and Laflamme, 1974) and the Lac...three minerals from the Precambrian Stillwater Complex of Montana. Pageet al. (1976) discussedthe variations |  | Cowden, A., Ruddock, R., Reay, A., Nicolson, P., Waterman, P., Banks, M. J. (1990) Platinum mineralisation potential of the Longwood Igneous Complex, New Zealand. Mineralogy and Petrology, 42 (1) 181-195 doi:10.1007/bf01162690 | Journal (article/letter/editorial) | | Mineralisation Potential of the Longwood Igneous Complex, New Zealand A. C o w d e n 1, R. R u d d o c k...Igneous Complex is situated at the southern tip of the South Island of New Zealand. The Complex is 32 km...volcanic, volcaniclastic and intrusive rocks. The complex is comprised of an extensive series of layered...gabbro zones within the Banded Series of the Stillwater Complex. The mineralised rocks are leucocratic plagioclaseolivine...and its host rocks to the JM Reef of the Stillwater Complex and AP and PV mineralisation of the Penikat |  | | Report (issue) | | (Pt0.88 (Te1.72 Bi0.28 )Σ=2.00 . (3) Stillwater complex, Montana, USA; by electron microprobe, corresponding...michenerite, kotulskite, froodite, sperrylite, cooperite, laurite, braggite, insizwaite, gold, pyrrhotite...Merensky Reef, Bushveld complex, Transvaal. In the USA, at the Stillwater complex, Montana; from the New Rambler...mines, near Pickle Lake, and the Lac des Iles complex, Ontario; from the Wellgreen Ni–Cu–PGE deposit...along the 35-km strike of the J-M reef, Stillwater Complex, Montana. Can. Mineral., 24, 329–346. (6) Cabri |  | | Journal (article/letter/editorial) | | Compositional variation of cooperite, braggite, and vysotskite from the Bushveld Complex SABINE M. C. VERRYN...The compositions of coexisting and individual cooperite (ideally PtS) and braggite (ideally (Pt,Pd)S)...from the Merensky Reef of the Bushveld Complex, as well as cooperite, braggite and vysotskite (ideally PdS)...Bushveld Complex were investigated. There is a clearly defined miscibility gap between cooperite and braggite...and vysotskite. Partition coefficients between cooperite and braggite are determined on coexisting phases |  | Bowles, J. F. W., Prichard, H. M., Suarez, S., Fisher, P. C. (2013) THE FIRST REPORT OF PLATINUM-GROUP MINERALS IN MAGNETITE-BEARING GABBRO, FREETOWN LAYERED COMPLEX, SIERRA LEONE: OCCURRENCES AND GENESIS. The Canadian Mineralogist, 51 (3) 455-473 doi:10.3749/canmin.51.3.455 | Journal (article/letter/editorial) | | IN MAGNETITE-BEARING GABBRO, FREETOWN LAYERED COMPLEX, SIERRA LEONE: OCCURRENCES AND GENESIS John F.W...magnetite-bearing gabbroic rocks of the Freetown Layered Complex, Sierra Leone for the first time. The PGM occurrences...lowest known PGE-enriched layer (Horizon M). Cooperite (PtS) and Pt-Fe alloys were observed in a higher...(usually Pt3Fe) is by far the most abundant PGM and cooperite is a significant component of the assemblage....(RuS2) have also been found in this horizon. Cooperite occurs in a late magmatic, high Ca-amphibole (cannilloite) |  | | Journal (article/letter/editorial) | | almost invariably in the Merensky Reef and in Stillwater, whereas Ru sulfide is abundant in ophiolites...Merensky Reef, Driekop (Tarkian and Stumpfl 1975), Stillwater (Volborth et al. 1986) and the Witwatersrand...t - - P d sulfides from the Merensky Reef and Stillwater (Fig. 6) reveals that members of the braggite...are lacking in the Merensky Reef, whereas in Stillwater the complete solid solution series including...compositions of the P t - - P d sulfides found in Stillwater reflect their different temperatures of formations |  | Johan, Z., Ohnenstetter, M., Slansky, E., Barron, L. M., Suppel, D. (1989) Platinum mineralization in the Alaskan-type intrusive complexes near Fifield, New South Wales, Australia part 1. platinum-group minerals in clinopyroxenites of the Kelvin Grove prospect, owendale intrusion. Mineralogy and Petrology, 40 (4) 289-309 doi:10.1007/bf01164604 | Journal (article/letter/editorial) | | erlichmanite, isoferroplatinum, tetraferroplatinum, cooperite, cuprorhodsite, malanite, geversite, sperrylite...The early PGM (erlichmanite, (Pt-Fe) alloys, cooperite) were deposited from a fluid-rich system slightly...fluid phase. These minerals extensively replace cooperite and locally remobilize the PGE stock. Isoferroplatinum...and cobaltite. They are extensively replacing cooperite, but are in equilibrium with geversite-sperrylite...the most oxidized pyroxenites of the Owendale Complex. Zusammenfassung Platin- Vererzung in intrusiven |  | Li, C., Ripley, E. M., Merino, E., Maier, W. D. (2004) REPLACEMENT OF BASE METAL SULFIDES BY ACTINOLITE, EPIDOTE,CALCITE, AND MAGNETITE IN THE UG2 AND MERENSKY REEF OF THE BUSHVELDCOMPLEX, SOUTH AFRICA. Economic Geology, 99 (1) 173-184 doi:10.2113/gsecongeo.99.1.0173 | Journal (article/letter/editorial) | | MAGNETITE IN THE UG2 AND MERENSKY REEF OF THE BUSHVELD COMPLEX, SOUTH AFRICA CHUSI LI,†EDWARD M. RIPLEY, ENRIQUE...and the Merensky reef in the western Bushveld Complex has produced four common replacements: (1) replacement...Introduction The UG2 and Merensky reef of the Bushveld Complex are the major sources of platinum group elements...UG2 and Merensky reef of the western Bushveld Complex. Replacement reactions are proposed that are directly...and textures. Geologic Background The Bushveld Complex is a layered mafic-ultramafic intrusion with a |  | | Journal (article/letter/editorial) | | encountered in the experimental runs are synthetic cooperite [(Pt,Pd,Ni)S], synthetic braggite [(Pt,Pd,Ni)S]...quenched sulfide liquid, and Ni1–xS. Synthetic cooperite is stable to temperatures above 1200°C, whereas...the system PtS–PdS– NiS, Ni-saturated synthetic cooperite, braggite, and vysotskite coexist with Ni1–xS...synthetic cooperite coexists with Ni1–xS, and synthetic braggite and Pd-bearing synthetic cooperite coexist...temperatures ≥ 1000°C, Ni-saturated synthetic cooperite and braggite coexist with a Pd–Ni–Pt sulfide melt |  | Zaccarini, F., Anikina, E., Pusharev, E., Rusin, I., Garuti, G. (2004) Palladium and gold minerals from the Baronskoe-Kluevsky ore deposit (Volkovsky complex, Central Urals, Russia) Mineralogy and Petrology, 82 (1) 137-156 doi:10.1007/s00710-004-0049-1 | Journal (article/letter/editorial) | | the Baronskoe-Kluevsky ore deposit (Volkovsky complex, Central Urals, Russia) F. Zaccarini1 , E. Anikina2...quantitative analysis of the ore minerals, has revealed a complex Pd–Au mineralogy. The texture of the ore minerals...relationships. Geological background The Volkovsky complex is located in the southern part of the Ural Platinum...intrusion (Fig. 1). The complex pertains to the Tagil-Barancha gabbro–diorite–syenite complex (Ivanov, 1997),...(‘‘kytlyimite’’), to the west (Fig. 2). The Volkovsky complex consists of gabbro and minor ultramafic rocks intruded |  | | Journal (article/letter/editorial) | | (sperrylite); and sulphides and sulpharsenides (cooperite, laurite, braggite and hollingworthite). Platinum...main PGE-bearing phases as being sperrylite, cooperite, braggite and Pt- and Pd-bearing bismuthotellurides...for the observed mineralisation pattern, and a complex multi-stage mechanism is proposed. Geological...Prendergast, 1990). The P1 pyroxenite is the most complex cyclic unit of the layered intrusion, showing both...(Prendergast and Wilson, 1989). This comprises a complex series of subzones of sulphide mineralisation. |  | | Report (issue) | | United States The Stillwater Complex* southwestern Montana ....... 8 The Duluth Complex, Minnesota .................. 9 Crillion-La Perouse Complex, Alaska ............ 10 Goodnews Bay, Alaska .........in the Stillwater Complex, Mont.; Duluth Gabbro Complex, Minn.; and CrillionLa Perouse Complex, Alaska...base and precious metals but that also contain complex telluride and bismutho-telluride mineralization...Deposits in South Africa The Bushveld Igneous Complex, a stratiform intrusion, covers an area of 260 |  | | Journal (article/letter/editorial) | | from a study of five Jaska, and from the Stillwater Complex, Mon_ ric, and hard, probably having [001]...from the identified by Bannister and Bushveld Complex, u, Po'gi"'"'srust, was detective story in Hey...1964;Kingston, 1966b,P' 818, "corr but within the Bushveld ComPlex, occurs at DriekoP (StumPfl, 1961, P wacht (Ramdohr...chromitites of reported.by.Page and the Stillwater Complex, Montana, was recently and Desborough has found...is briefly deThe occurrenceof Gooinews Bay and stillwater chemical composition and ore scribed in this |  | | Journal (article/letter/editorial) | | isomertieite (Pd 11Sb2As2), stibiopalladinite (PdsSb 2), cooperite (PtS) and braggite ((Pt, Pd, Ni)S). It is suggested...Isomertieit (PdllSbzAs2), Stibiopalladinit (PdsSb2), Cooperite (PtS) und Braggit ((Pt, Pd, Ni)S). Es wird angeregt...anorthosite and mixed rock of the J-M Reef of the Stillwater Complex (cf. Bow et al., 1982; Campbell et al., 1983;...et al., 1985; Barnes and Naldrett, 1986). The Stillwater rocks contain cumulus olivine, however, which...(PdsSb2) (Fig. 5). Braggite ((Pt, Pd, Ni)S) and cooperite (PtS) have also been encountered in previous investigations |  | Prichard, Hazel M., Barnes, Sarah-Jane, Fisher, Peter C., Pagé, Philippi, Zientek, Michael L. (2017) Laurite and Associated PGM In the Stillwater Chromitites: Implications For Processes of Formation, and Comparisons With Laurite In the Bushveld and Ophiolitic Chromitites. The Canadian Mineralogist, 55 (1) 121-144 doi:10.3749/canmin.1600006 | Journal (article/letter/editorial) | | 3749/canmin.1600006 LAURITE AND ASSOCIATED PGM IN THE STILLWATER CHROMITITES: IMPLICATIONS FOR PROCESSES OF FORMATION...nine chromite layers (A to K) in the Stillwater Complex, Montana and then extend the study to examine...laurites from the Bushveld Complex and ophiolites. The most common PGM in the Stillwater chromitites is laurite...of the PGM within the chromite grains in the Stillwater chromitite layers is not uniform. Upper and lower...Comparison of the shape of Stillwater laurites with those in the Bushveld Complex chromitites reveals similarities |  | | Report (issue) | | material; Os by difference. (2) Goodnews Bay, Alaska, USA; by electron microprobe. (3) Rio Pilpe, Colombia;...in placer deposits. Association: chromite. Cooperite, braggite, sperrylite, other minerals of the platinum-group...Africa, from the Merensky Reef of the Bushveld complex, at Potgietersrus; in the Rustenburg and Union...Driekop and Onverwacht mines. In the USA, in the Stillwater complex, Montana; on the Yuba River, Nevada Co....American chemist, Columbia University, New York City, USA. Type Material: University of Göttingen, Göttingen |  | | Report (issue) | | merenskyite, kotulskite (Shiaonanshan, China); also cooperite, laurite. Distribution: In Canada, at the Vermilion... Algoma district, near Sudbury, Ontario. In the USA, at the New Rambler Cu–Ni mine, Medicine Bow Mountains...Co., Nevada; and from the Stillwater complex, Montana. In the Bushveld complex, on the Merensky reef, Transvaal...Finland, at Rometölväs Hill, in the Koillismaa complex; from the Hitura Cu–Ni deposit; and in the Siikakama...Canada; Yale University, New Haven, Connecticut, USA, 1.2950, 1.5895. References: (1) Palache, C., H. |
|
Minneapolis adit, J-M Reef, Stillwater County, Montana, USA