 | | Report (issue) | | Properties: Hardness = > 6, greater than that of sperrylite. (100 g load). D(meas.) = n.d. D(calc.) = [7...chromatites; in Cu–Ni sulfide ores. Association: Sperrylite, geversite, erlichmanite, irarsite, Pt–Fe alloys...braggite, sperrylite, cobaltite, pyrrhotite, pentlandite, pyrite, chalcopyrite (Stillwater complex, Montana...Montana, USA). Distribution: Increasingly recognized as an economically important platinum-group mineral...In South Africa, in the Merensky Reef, Bushveld complex, Transvaal, from the Driekop [TL], Onverwacht, |  | | 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...merenskyite, cooperite, braggite, vysotskite, sperrylite, pyrite, chalcopyrite, pyrrhotite, chromite,...graphite (Stillwater complex, Montana, USA). Distribution: In the USA, from the Stillwater complex, Montana |  | 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...Rh)-bearing, including Pd-Pb, Pt-Pd tellurides, sperrylite, platarsite, minor laurite, and one grain of...of the PGM within the chromite grains in the Stillwater chromitite layers is not uniform. Upper and lower |  | | Report (issue) | | 10.311 Z=3 X-ray Powder Pattern: Stillwater complex, Montana, USA. 2.115 (100), 2.355 (80), 1.351 (50)...89 Total 100.2 [100.56] 100.00 (1) Stillwater complex, Montana, USA; by electron microprobe; corresponds...bodies. Association: Gold, palladoarsenide, sperrylite, braggite, hollingworthite, chalcopyrite, digenite...zones of the Stillwater complex, Montana, USA [TL]. In the Roby zone, Lac des Iles complex, Ontario, Canada...Karelia, Russia. Name: For the Stillwater mafic complex, Montana, USA. Type Material: Royal Ontario |  | 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 |  | | Journal (article/letter/editorial) | | (PtTe2), atokite (Pd3Sn), kotulskite (PdTe), sperrylite (PtAs2), irarsite (IrAsS), cooperite (PtS), sudburyite...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...activity also affected the rocks of the Sudbury Complex and remobilized base metals and PGE (Marshall et |  | 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) | | mackinawite, chromite, and the PGE minerals sperrylite, michenerite, irarsite, froodite and hollingworthite...minéraux des éléments du groupe du platine (EGP) sperrylite, michenerite, irarsite, froodite et hollingworthite...PGM (platinum-group minerals), consisting of sperrylite (81.1%), michenerite (6.6%), irarsite (1.9%)...described this phase from the Stillwater Complex, Sweetwater County, Montana, and resolved the crystal structure...et al. (1976). This earlier study showed that sperrylite is the only Ptbearing mineral, and that the Pd-bearing |  | | Report (issue) | | Ag0.09 Au0.02 )Σ=1.98 As1.02 . (2) Stillwater complex, Montana, USA; by electron microprobe, corresponding...)Σ=2.03 (As0.94 Te0.03 )Σ=0.97 . (3) Lac des Iles complex, Canada; by electron microprobe, corresponding...concentrates (Stillwater complex, Montana, USA). Association: Chalcopyrite, sperrylite, gold, kotulskite...Finland. In the USA, in the Banded and Upper Zones of the Stillwater complex, Montana. In Canada, at the...the Lac des Iles complex, Ontario. From Kambalda, 56 km south of Kalgoorlie, Western Australia. At the |  | | 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...palladian tulameenite (Stillwater complex, Montana, USA); hongshiite, cooperite, sperrylite, isomertieite, magnetite...the Upper and Banded portions of the Stillwater complex, Montana; from near Moapa, Clark Co., Nevada;...Yuba River, Nevada Co., California, USA. At the Lac des Iles complex, Ontario, Canada. In the Yen deposit |  | | Report (issue) | | Pd0.27 Ni0.14 )Σ=1.01 S1.00 . (2) Stillwater complex, Montana, USA; by electron microprobe, corresponding...at high magmatic temperatures. Association: Sperrylite, cooperite, laurite, platinum (Potgietersrus...keithconnite, palladian tulameenite (Stillwater complex, Montana, USA). Distribution: One of most common...Reef, Bushveld complex, Transvaal, South Africa. At the Stillwater complex, Montana, USA. From the Lac...Lac des Iles complex, Ontario, Canada. In the Santiago River, Esmeraldas Province, Ecuador. At the Luanga |  | | Journal (article/letter/editorial) | | AND MINERALIZATION IN THE J–M REEF, STILLWATER COMPLEX, MONTANA JOSEPH S. POLOVINA 1254 Wonder Court...the J–M Reef and its footwall in the Stillwater Complex, Montana. We used optical microscopy, scanning...petrography, geochemistry, layered intrusion, Stillwater Complex, Montana. SOMMAIRE Nous avons établi la minéralogie...J–M et les roches du socle du complexe de Stillwater, au Montana. A cette fin, nous avons utilisé la microscopie...complexe de Stillwater, Montana. INTRODUCTION The Stillwater Complex in south-central Montana is the host |  | | Report (issue) | | (Pt0.88 (Te1.72 Bi0.28 )Σ=2.00 . (3) Stillwater complex, Montana, USA; by electron microprobe, corresponding...sobolevskite, michenerite, kotulskite, froodite, sperrylite, cooperite, laurite, braggite, insizwaite, gold...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 |  | | Report (issue) | | Brazil); stillwaterite, braggite, vysotaskite, sperrylite, hollingworthite (Siikakama intrusion, Finland)...mine. In the Stillwater complex, Montana, USA. From the Merensky Reef, Bushveldt complex, Transvaal, South...National Museum of Natural History, Washington, D.C., USA, 142504. References: (1) Clark, A.M., A.J. Criddle...Arsenopalladinite from Itabira, Brazil and from the Stillwater Complex, Montana. Can. Mineral., 15, 70–73. (4) Criddle |  | | Report (issue) | | Pd0.01 Ni0.03 )Σ=1.02 S0.98 . (2) Stillwater complex, Montana, USA; by electron microprobe, corresponding...alluvial placers. Association: Braggite, vysotskite, sperrylite, moncheite, platarsite, laurite, malanite, hollingsworthite...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, |  | | Journal (article/letter/editorial) | | to one of the group’s few collectible species, sperrylite, only small single crystals were occasionally... but virtually never on matrix. So rare were sperrylite matrix pieces that, despite its discovery in...not available represented the only significant sperrylite matrix localities until about ten years ago,...fine Talnakh sperrylite was nominated as this issue’s Connoisseur’s Choice. Sperrylite is a tin-white...identified seventeen crystal forms exhibited by sperrylite, including four different trapezohedra, a trisoctahedron |  | | Journal (article/letter/editorial) | | Mineralization at Romet6Mis, Koillismaa Layered Igneous Complex, Finland R. Piispanen i and M. Tarkian 2 1 Department...Proterozoic (2.44 Ga) Koillismaa layered igneous complex (KLIC) in northern Finland using electron microprobe...the general igneous stratigraphic column of the complex and partly as a fine-grained impregnation in the...penecontemporaneous basic sills and dykes. Among the PGM sperrylite, michenerite and a palladian bismuthian melonite...the deposits ofBushveld, Sudbury, Great Dyke, Stillwater, Norilsk, Pechenga (USSR), Muskox, Kambalda, |  | | Journal (article/letter/editorial) | | Platinum-GroupMinerals in Chromite Seamsof the Stillwater Complex, Montana RAYMOND W. TALKINGTON GeologyDepartment-NAMS...massivechromite,in the ultramaficzone of the Stillwater Complex.They are small,generallylessthan 20 •t...occasional occurrences of cumulus THE Stillwater Complex, Montana, is an Archcan (•2,700 m.y.)layeredi...givenpartof the zoneof the StillwaterComplex. complex,8 to 21 cyclicunitsmaybe found.The chroSamplingand... •uoz ag•m•r•ll'l PGMIN CHROMITESEAMS, STILLWATER COMPLEX View, West Fork, and Benbow areas(seeFig |  | | Journal (article/letter/editorial) | | Au-rich, PGE-poor magnetite ores which host a complex assemblage of inclusions consisting mainly of graphite...graphite, C u - F e - and pure Cu sulphides, sperrylite and tetraauricupride. Their accompanying hydrous...contrast the magnetite ores show a distinct and more complex sulphide assemblage consisting of pent- Platinum-Group...Cu sulphides, graphite, tetraauricupride and sperrylite. The serpentinized silicate matrix is abundant...tetraauricupride, less frequent also small grains of sperrylite were found. Chromite The chromites show little |  | | Journal (article/letter/editorial) | | 1352-1363 PlatinumMetalsin theStillwaterComplex, Montana NOUA J PAGE,J. J. ROWE,ANDJOSEPH HAFFTY Abstract...zonesof the stratiform mafic and ultramafic Stillwater Complex, southwesternMontana. Reported values range...vysotskite,moncheite,kotulskite,merenskyite, sperrylite, and stibiopalladinitehas been confirmedby various...Introduction and Geologic Setting of the Stillwater Complex composedo[ olivine, ,chromite, olivine+...olivine+ bronzite, and ThE Stillwater Complex,a large tabular massof internallyconformable layeredmaficand ultramafic |  | | Report (issue) | | Sperrylite PtAs2 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Cubic. Point Group: 2/m... 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. |  | | Journal (article/letter/editorial) | | michenerite, kotulskite and polarite); arsenides (sperrylite); and sulphides and sulpharsenides (cooperite...identified the 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. |  | | Journal (article/letter/editorial) | | whereas the PGM identified are represented by sperrylite (PtAs2), kotulskite (PdTe), merenskyite (PdTe2)...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...sulphides. The PGM identified are represented by sperrylite (PtAs2), kotulskite (Pd(Te, Bi)), isomertieite...various platinum-group minerals of the PV Reef. A) Sperrylite (SPY) inclusions in chalcopyrite (CP); B) euhedral |  | | 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 |  | Yakovlev, Yu. N., Mitrofanov, F. P., Razhev, S. A., Veselovsky, N. N., Distler, V. V., Grokhovskaya, T. L. (1991) Mineralogy of PGE in the mafic-ultramafic massifs of the Kola region. Mineralogy and Petrology, 43 (3) 181-192 doi:10.1007/bf01166890 | Journal (article/letter/editorial) | | (after Yakovlev et al., 1981). 1 Rifes terrigenous complex (sandstones, conglomerates, schists); 2-4 Karelian...Belomorian amphibolite-gneiss crystalline schist complex (5 Keivy schist series; 6 Lebyazhka, Voronyetundra...Olenegorsk, Annam series, and their analogs); 8 Oldest complex of primary sialic crust (plagiogranites, tonalites...Telargpalite Stillwaterite* Palladoarsenide* Majakite* Sperrylite Omeiite Osarsite Irarsite Hollingworthite (unnamed)*...are characterized by idiomorphic individuals (sperrylite, sulfarsenides, etc.). Monornineralic segregations |  | | Journal (article/letter/editorial) | | accompanied by As-bearing platinum group minerals (PGM) sperrylite (PtAs2), and irarsite ([RhIrPt]AsS). These As-bearing...been omitted as the stratigraphy is slightly more complex. These plots demonstrate that S-poor dunite samples...Te)2 minerals and Asbearing PGM, predominately sperrylite (PtAs2) and members of the hollingworthite-irarsite-platarsite...host both PGE-bearing tellurides (Fig. 9E-F) and sperrylite (Fig. 10D-E). These stringers connect to interstitial...increase in As-bearing PGM observed at the margins. Sperrylite crystals are relatively abundant, with 69 identified |
|
