 | | Journal (article/letter/editorial) | | data, a general description of platinum-bearing placers of the Siberian Platform is given. Typomorphic...Siberian Platform, the following types of PGM placers have been recognizedârhodian ferroan platinum (Vilyuyan)...part of the Siberian Platform (Lena Pt-bearing province), placer occurrences consisting of a unique association...(rhodian ferroan platinum type) are widespread. These placers are located mainly in channels that drain Mesozoic...platinum alloys (sperrylite-platinum type). These placers are widespread in regions where Proterozoic stratiformly |  | Stepanov, Sergey, Palamarchuk, Roman, Kozlov, Aleksandr, Khanin, Dmitry, Varlamov, Dmitry, Kiseleva, Daria (2019) Platinum-Group Minerals of Pt-Placer Deposits Associated with the Svetloborsky Ural-Alaskan Type Massif, Middle Urals, Russia. Minerals, 9 (2) 77 doi:10.3390/min9020077 | Journal (article/letter/editorial) | | minerals (PGM) of eluval, proximal, and distal placers associated with the Ural-Alaskan type clinopyroxenite-dunite...different distances from the lode source. Eluvial placers are situated directly above the ore zones, and...proximal placer is considered as an example of alluvial ravine placer with the PGM transport distance...isoferroplatinum prevail in the lode ores and placers with different PGM transport distance. In some...the significant PGM transport distance in the placers is the absence of rims composed of the tetraferroplatinum |  | Tolstykh, N. D., Foley, J. Y., Sidorov, E. G., Laajoki, K. V.O. (2002) COMPOSITION OF THE PLATINUM-GROUP MINERALS IN THE SALMON RIVER PLACER DEPOSIT, GOODNEWS BAY, ALASKA. The Canadian Mineralogist, 40 (2) 463-471 doi:10.2113/gscanmin.40.2.463 | Journal (article/letter/editorial) | | COMPOSITION OF THE PLATINUM-GROUP MINERALS IN THE SALMON RIVER PLACER DEPOSIT, GOODNEWS BAY, ALASKA NADEZHDA D...of platinum-group minerals from the Salmon River placers, Goodnews Bay, Alaska, are compared with those...Pt2CuFeâPtFe series and also contains up to 2.64 wt.% Ni. Iridium and osmium occur as inclusions in the isoferroplatinum...proportion of Os in iridium varies from 12 to 20 at.%. The concentration of Pt in iridium reaches 21.79 wt...platinum-group minerals, Alaskan-type complex, placers, Goodnews Bay, Alaska. SOMMAIRE Nous dĂ©crivons |  | | Journal (article/letter/editorial) | | Alpine-type ultramafic intrusions and the associated placers in Borneo KE1KO HATTORI Ottawa-Carleton Geoscience...platinumgroup minerals (PGM) in the associated alluvial placers in Borneo, Indonesia/Malaysia. The Osisotope...1870S/186Os ratios was detected among PGM from placers, but no variation was found within individual grains...are consistent with a detrital origin of PGM in placers: the placer PGM originated in the ultramafic section...grains from igneous rocks and their deposition in placers was almost entirely by mechanical processes. KEYWOROS: |  | | Journal (article/letter/editorial) | | XXâXX SCIENTIFIC COMMUNICATIONS PLATINUM-BEARING PLACERS: MINERAL ASSOCIATIONS AND THEIR 190Pt-4He AND Re-Os...platinum-group mineral (PGM) placers of large areal extent in the river basins of Siberia (Vilyui, Lena...isotope dating of PGMs, and applied to Pt-bearing placers of Siberia. Correlations between the 190Pt-4He...show that the potential sources for some of the placers are likely buried Precambrian mafic-ultramafic...paper can be applied to other cratonic areas with alluvial PGMs of unknown origin. Introduction face (Vysotskiy |  | | Journal (article/letter/editorial) | | data from Os-rich minerals from chromitites and placers closely associated to the Kondyor and Inagli massifs...mechanical transport of liberated PGM formed the placers. Os-isotope model ages in the range of 340 to 355...of the Kondyor and Inagli massifs of the Aldan Province at the southeastern part of the Siberian Craton...the Guli massif (370 Ma) of the MaimechaâKotui Province at the northern part of the Siberian Craton. Keywords:...dans les minĂ©raux provenant de chromitites et de placers Ă©troitement associĂ©s aux complexes de Kondyor et |  | | Journal (issue) | | Canada, K2G fX l Panning for platinum, Tapitangan River, Banggi Island, North Borneo, Malaysia Explor...analyses) and Os-Ir-Ru-Pt alloys (976 analyses) in the placers. The platinum-group element (PGE) alloys, as well...lation at about 16-17 and 25 at.% (Fe, Cu, Ni). Iridium, osmium, and rhodium occur in trace quan tities...DEPOSITS......... 78 ORIGIN OF PGM IN ELUVIALAND ALLUVIAL PLACER DEPOSITS............ ...................................82 Northwest Territories, Liard River................................................ |  | Barkov, Andrei Y., Tolstykh, Nadezhda D., Shvedov, Gennadiy I., Martin, Robert F. (2018) Ophiolite-related associations of platinum-group minerals at Rudnaya, western Sayans and Miass, southern Urals, Russia. Mineralogical Magazine, 82 (3) 515-530 doi:10.1180/mgm.2018.82 | Journal (article/letter/editorial) | | describe similar assemblages of minerals found in two placers in Russia, both derived likely from an ophiolitic...The first is located along the River Rudnaya in the Western Sayan province, Krasnoyarskiy kray, and the...the order of occurrence osmium, ruthenium, and iridium. The remainder consists of Ptâ Fe alloys and species...first of these occurrences is located along the River Rudnaya in the Ermakovskiy district, near Shushenskoye...Priyeniseiskiy territory of the western Sayan province, Krasnoyarskiy kray (Fig. 1). This placer is associated |  | | Book | | and Gold in the Ophiolite-Related Placer of the River Bolshoy Khailyk, Western Sayans, Russia Reprinted...EnvironmentâFrom SulïŹde Ores via Oxidized Ores into Placers: Case Studies Bushveld Complex, South Africa, and...various Cr-Ni-Cu-PGE deposits and PGE-Au-bearing placers. Federica Zaccarini from Modena, Italy obtained...six platinum-group elements (PGE): osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), platinum (Pt)...genetical evolution from their lode deposits to the placers. According to this author, the ïŹnal PGM suite which |  | | Journal (article/letter/editorial) | | six platinum-group elements (PGE): osmium (Os), iridium (Ir), ruthenium (Ru), rhodium (Rh), platinum (Pt)...genetical evolution from their lode deposits to the placers. According to this author, the final PGM suite...alteration from sulfide ores via oxidized ores into placers results from the continuous elimination of unstable...PGM and the dispersion of soluble PGE. The final alluvial PGM assemblage consists of a great number of residual...demonstrated that the degree of alteration of PGM in placers associated with the Ural-Alaskan type Svetloborsky |  | Airiyants, Evgenia V., Kiseleva, Olga N., Zhmodik, Sergey M., Belyanin, Dmitriy K., Ochirov, Yuriy C. (2021) Platinum-Group Minerals in the Placer of the Kitoy River, East Sayan, Russia. Minerals, 12 (1) 21 doi:10.3390/min12010021 | Journal (article/letter/editorial) | | Platinum-Group Minerals in the Placer of the Kitoy River, East Sayan, Russia Evgenia V. Airiyants *, Olga...Platinum-Group Minerals in the Placer of the Kitoy River, East Sayan, Russia. Minerals 2022, 12, 21. https://doi...mineralization found in the upper reaches of the Kitoy River (the southeastern part of the Eastern Sayan (SEPES))...source of the platinum-group minerals from the Kitoy River placer is the rocks of the Southern ophiolite branch...are only a few records of PGE mineralization in alluvial sediments in the Eastern Sayan [30], and there |  | | Journal (article/letter/editorial) | | individual platinum-group minerals (PGM) from placers, which are associated with ultramafic intrusions...locations Most of PGM used in the study came from placers associated with ultramafic intrusions. Exceptions...spatial association of the occurrences of the placers and ultramafic intrusions suggests the derivation...mechanical derivation from the ultramafic rocks to the placers [10,11,12]. In this paper, we classify the ultramafic...osmium, ruthenium and rutheniridosmine or cubic iridium). The nomenclature of PGM is after Harris and Cabri |  | | Journal (article/letter/editorial) | | deposits, the main original source of platinum placers. Downloaded by [University of California, San...modified by L.1/. Razin). 1 - alluvial deposits 2 - platiniferous alluvial placer 3 4 5 6 vvv albitite...II Primary ferroplatinum Platiniridium Native iridium Native platinum I _I Foresterite 11 III Magnetite...sources of alluvial, deluvial and residual platinum placers. The productivity of the alluvial placers is particularly...particularly high. iridium and rhodium content frequently noted in segregations of hysteromagmatic chromespinel |  | Shcheka, G. G., Lehmann, B., Gierth, E., Gomann, K., Wallianos, A. (2004) MACROCRYSTALS OF Pt Fe ALLOY FROM THE KONDYOR PGE PLACER DEPOSIT, KHABAROVSKIY KRAY, RUSSIA: TRACE-ELEMENT CONTENT, MINERAL INCLUSIONS AND REACTION ASSEMBLAGES. The Canadian Mineralogist, 42 (2) 601-617 doi:10.2113/gscanmin.42.2.601 | Journal (article/letter/editorial) | | The coarse crystals occur in eluvial and alluvial placers within the Kondyor massif, a zoned clinopyroxeniteâdunite...macrocristaux idiomorphes dâalliage PtâFe, prĂ©levĂ©s de placers Ă Ă©lĂ©ments du groupe du platine (EGP) de Kondyor...com 602 THE CANADIAN MINERALOGIST dans les placers Ă©luvionnaires et alluvionnaires dĂ©veloppĂ©s dans...47 Ma for gabbro pegmatite, respectively. Alluvial PGM placers developed inside the intrusion in areas...morphology, along the northern valley of the Kondyor River and its tributaries (Sushkin 1995). The main metal |  | | Journal (article/letter/editorial) | | minerals Article Gems and PlacersâA Genetic Relationship Par Excellence Harald G. Dill Mineralogical...absence of heavy metals), can also appear in some placers and won for a profit (agate, amethyst, citrine...trap-site of gemstones (residual, eluvial, colluvial, alluvial, deltaic, aeolian, and marine shelf deposits)...that matter during accumulation of gemstones in placers are their intrinsic value controlled by the size...accumulation. The present study on gems and gemstone placers is a reference example of fine-tuning the âChessboard |  | Gordienko, I. V., Gorokhovsky, D. V., Smirnova, O. K., Lantseva, V. S., Badmatsyrenova, R. A., Orsoev, D. A. (2018) Dzhida Ore District: Geology, Structural and Metallogenic Regionalization, Genetic Types of Ore Deposits, Geodynamic Conditions of Their Formation, Forecast, and Outlook for Development. Geology of Ore Deposits, 60 (1) 1-32 doi:10.1134/s1075701518010038 | Journal (article/letter/editorial) | | 1134/S1075701518010038 sten vein deposit and tungsten placers in Gudzhirka, Inkur, and Maly Kholtoson creeks...same year, tungsten placers in the right tributaries at headwaters of the Dzhida River and a bedrock tungsten...volcanicâsedimentary rocks at the headwaters of the Dzhida River (Belichenko, 1969). Later, this zone was traced...with granitoids of the Caledonian Central Asian Province (Kovalenko et al., 2006). CambrianâOrdovician...in the basin of the upper reaches of the Dzhida River, extends from the southeast to the northwestern |  | | Journal (article/letter/editorial) | | INTRODUCTION Platinum alloys are major constituents of alluvial nuggets found in a number of platinum-group-mineral...platinum in alluvial sediments south of Ekaterinburg, in the central Urals, several platinum placers were located...of its distinctive metallogenic signature, this province became known among Russian geologists as the âUral...the nineteenth century, it has been known that alluvial platinum in the Urals was mostly contributed by...The mineralogy and composition of Pt alloys in alluvial nuggets from the Platinum-bearing Belt have recently |  | | Journal (article/letter/editorial) | | INTRODUCTION Platinum alloys are major constituents of alluvial nuggets found in a number of platinum-group-mineral...platinum in alluvial sediments south of Ekaterinburg, in the central Urals, several platinum placers were located...of its distinctive metallogenic signature, this province became known among Russian geologists as the âUral...the nineteenth century, it has been known that alluvial platinum in the Urals was mostly contributed by...The mineralogy and composition of Pt alloys in alluvial nuggets from the Platinum-bearing Belt have recently |  | | Journal (article/letter/editorial) | | ultramafite plati noids concerned the platiniferous placers asso ciated with them. Substantial advances in...two commonest types occurring in platiniferous placers, which show contrasts in mineral and chemical compoÂ...cubic structure; 1 and 2) the platinum (1) and iridium (2) trends in compositional evolution within a...osmium series (Os, Ru, Ir) â (Os, Ir) â Os, 3) the iridium series (Pt, Ru, Ir, Os) â 468 Downloaded by [New...represent mainly the end-members of the osmium and iridium series above [ 2 8 ] . Fe-Pt solid solutions: These |  | | Journal (article/letter/editorial) | | Alloys: Ruthenium (Ru,Os,Ir) Osmium (Os,Ir), Os Iridium (Ir,Os) Pt-Fe alloy Pt3 Fe Pd-bearing Pt-Fe alloy...142). LR laurite; LR-ERL Os-laurite; Ir-Os osmian iridium; Pt-Fe Pt-Fe alloy; B bowieite; Cu-Ir-T cuproiridsite;...minerals from Kraubath by 8 PGM, namely osmian iridium, Pd-bearing Pt-Fe alloy, braggite, an unnamed Ir-rich...ultramaÂźc massifs, as well as in nuggets from alluvial placers in Madagascar (AugeĂ and Legendre, 1992),...presence was conÂźrmed in Pt-Fe nuggets from alluvial placers in Madagascar (AugeĂ and Legendre, 1992) and |  | | Book | | rhodium, ruthenium, (PGE) include platinum, iridium and osmium. palladium, They are currently receiving...consist of just one element, but also palladium, iridium and osmium. platinum rhodium, Once these had...heavy triad: osmium, ruthenium, rhodium and iridium and platinum. physical and chemical properties...hardness. however, it does to work. impart Iridium retains its strength and corrosion resistance at...Australia and Zimbabwe. Alluvial a n d Eluvial D e p o s i t s The alluvial deposits of PGE along rivers |  | | Report (issue) | | Lode gold deposits Continental gold placers Marine gold placers Residual gold deposits Metals other than...McGrath area. -Quartzite conglomerates west of Big River, southeast of McGrath, were examined as possible...I creeks in the Seventy Mile area of the Yukon River in eastern Alaska appears to be derived frorr. veinlets...are all us~ful in prospecting for gold lodes and placers. Upper Pleistocene features in the Bering Strait...the range, some placer deposits in Quaternary alluvial fans are being mined on a small scale. Potential |  | | Book | | Zimbabwe T. OberthĂŒr, F. Melcher 75-96 97-111 6. Placers Associated with Ural-Alaska-type Complexes N.D...106 106 108 108 109 6. PLATINUM-GROUP ELEMENT PLACERS ASSOCIATED WITH URAL-ALASKA TYPE COMPLEXES N.D...P. Krivenko INTRODUCTION CLASSIFICATION OF PGM PLACERS AND THEIR LODE SOURCES URAL-ALASKA TYPE COMPLEXES...of the Ural-Alaska type complexes PGE-BEARING PLACERS CONNECTED WITH URAL-ALASKA TYPE COMPLEXES The commercial...commercial significance of the platinum placers Features of PGM Placer Deposits Morphology of PGM grains |  | | Book | | in general.) The riches of Croesus came from a river in his realm named the Pactolus. The origin of the...river's plentiful and easily recovered store of alluvial gold was explained allegorically in the legend... him to bathe in the waters of the River Pactolus. The river then sandy bottom became for centuries...controlled every major source of gold from the Indus River to the Nile. Tribute in gold flowed into Susa, the...establish a colony on Haiti, having from the river found there, he wrote, "such good will and such |  | Prichard, Hazel M., SuĂĄrez, Saioa, Fisher, Peter C., Knight, Robert D., Watson, John S. (2018) Placer platinum-group minerals in the Shetland ophiolite complex derived from anomalously enriched podiform chromitites. Mineralogical Magazine, 82 (3) 491-514 doi:10.1180/minmag.2017.081.099 | Journal (article/letter/editorial) | | documented previously. The focus of this study is alluvial platinum-group minerals (PGM) located in small...alloys, and laurite. Gold also occurs with the PGM. Alluvial PGM have average sizes of 20 x 60 ”m, with sperrylite...the rocks are absent. At Harold's Grave only 3 alluvial PGM (laurite, Ir, Os) and Au were recovered reflecting...Shetland ophiolite complex, Cliff, Harold's Grave, alluvial concentrates, platinum-group minerals, platinum-group...increasing 6 knowledge base regarding whether alluvial PGM are mechanically eroded from their source |
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