 | OberthĂŒr, Thomas, Melcher, Frank, Fusswinkel, Tobias, van den Kerkhof, Alfons M., Sosa, Graciela M. (2018) The hydrothermal Waterberg platinum deposit, Mookgophong (Naboomspruit), South Africa. Part 1: Geochemistry and ore mineralogy. Mineralogical Magazine, 82 (3) 725-749 doi:10.1180/minmag.2017.081.073 | Journal (article/letter/editorial) | | The Hydrothermal Waterberg Platinum Deposit, Mookgophong (Naboomspruit), South Africa â Part 1 â Geochemistry...mut.oberthuer@yahoo.de Abstract The Waterberg Platinum deposit is an extraordinary example of a vein-type...opaque mineral and the lack of sulfides. The âWaterberg typeâ mineralization is characterized by unique...fluids and formation of Pt-Cu alloys and hongshiite [PtCu]. (iii) Weathering/oxidation of the...still active. 2 Keywords: Hydrothermal Waterberg Platinum Deposit, Bushveld Complex, platinum-group elements |  | Cabral, Alexandre R., SkĂĄla, Roman, VymazalovĂĄ, Anna, Maixner, Jaroslav, Stanley, Chris J., Lehmann, Bernd, Jedwab, Jacques (2019) Orthocuproplatinum, Pt3Cu, a new mineral from the Lubero region, North Kivu, Democratic Republic of the Congo. Mineralogy and Petrology, 113 (4) 527-532 doi:10.1007/s00710-019-00663-1 | Journal (article/letter/editorial) | | The grain of orthocuproplatinum has a rim of hongshiite, PtCu, and abundant inclusions of calcite. Opaque...typically contain hematite at the Waterberg deposit, Naboomspruit, South Africa, where native platinum and Ptâ...et al. 2017). In Minas Gerais, for instance, hongshiite (PtCu) is recorded from quartzâspecular-hematite...The grain of orthocuproplatinum has a rim of hongshiite and abundant inclusions of calcite (Fig. 1; for...inclusions of calcite, and surrounded by a rim of hongshiite. The latter is irregular; it is locally absent |  | | Journal (article/letter/editorial) | | close to unity, corresponding to the mineral hongshiite (PtCu). The core composition is within the compositional...absence of iron in the Pt3Cu core and in the hongshiite rim. Hematite does occur as inclusions in other...calcite-saturated hydrothermal brine. Keywords: Pt3Cu, hongshiite, calcite, North Kivu, Lubero, Democratic Republic...et al. 1995, 1999), for the Waterberg deposit, Naboomspruit, South Africa. Even earlier, in the nineteenth...10 wt.% FeO (i.e., MnO/FeO 4 1). DISCUSSION Hongshiite and Pt3Cu The composition of the rim and its |  | | Journal (article/letter/editorial) | | of a gold nugget from Gongo Soco, an iron ore deposit in Minas Gerais, Brazil. The rosettes consist essentially...virtually Fe-free native platinum in the Waterberg district of South Africa (Wagner 1929, McDonald et al. 1999a)...now been discovered at Gongo Soco, an iron ore deposit situated about 50 km southwest of Itabira, where...precursor to the native platinum in the Waterberg district of South Africa (Wagner 1929, McDonald et al. 1999a)...1999a). As suggested for the Waterberg district, deoxygenation and dewatering at low temperatures could |  | Kwitko, R., Cabral, A. R., Lehmann, B., Laflamme, J.H. G., Cabri, L. J., Criddle, A. J., Galbiatti, H. F. (2002) HONGSHIITE, PtCu, FROM ITABIRITE-HOSTED Au Pd Pt MINERALIZATION (JACUTINGA), ITABIRA DISTRICT, MINAS GERAIS, BRAZIL. The Canadian Mineralogist, 40 (2) 711-723 doi:10.2113/gscanmin.40.2.711 | Journal (article/letter/editorial) | | (2002) HONGSHIITE, PtCu, FROM ITABIRITE-HOSTED AuâPdâPt MINERALIZATION (JACUTINGA), ITABIRA DISTRICT, MINAS...Doce, 35900-900 Itabira-MG, Brazil ABSTRACT Hongshiite occurs associated with palladian gold, and more...QuadrilĂĄtero FerrĂfero, central Minas Gerais, Brazil. Hongshiite occurs in grains up to about 1.5 mm in cross-section...platinum. The morphological and chemical features of hongshiite are similar to features caused by the weathering...as a local redox barrier to the passage of oxidizing hydrothermal fluids leading to hongshiite precipitation |  | Cabral, A. R., Lehmann, B., Kwitko, R., Jones, R. D. (2002) Palladian gold and palladium arsenideâantimonide minerals from Gongo Soco iron ore mine, QuadrilĂĄtero FerrĂfero, Minas Gerais, Brazil. Applied Earth Science, 111 (1) 74-80 doi:10.1179/aes.2002.111.1.74 | Journal (article/letter/editorial) | | Synopsis The present-day Gongo Soco iron ore deposit was one of the most famous gold mines in Brazil...a brief account is given here. The Gongo Soco deposit is hosted by the Itabira Iron Formation of Harder...a gentle eastward plunge. At its mid-point the deposit is about 1300 m long and 200 m wide. It is enclosed...March 2016 Fig. 1 Location of Gongo Soco iron ore deposit in relation to Itabira Iron Formation (black) of...from the specularite veins of the Waterberg deposit, South Africa. 29,41 The PtâPd alloy of Fig. 3(c) |  | Cabral, A. R., Lehmann, B., Kwitko-Ribeiro, R., Costa, C. H. C. (2002) Palladium and platinum minerals from the Serra Pelada Au-Pd-Pt deposit, Carajas mineral province, northern Brazil. The Canadian Mineralogist, 40 (5) 1451-1463 doi:10.2113/gscanmin.40.5.1451 | Journal (article/letter/editorial) | | PLATINUM MINERALS FROM THE SERRA PELADA AuâPdâPt DEPOSIT, CARAJĂS MINERAL PROVINCE, NORTHERN BRAZIL ALEXANDRE...in 1980 by garimpeiros, the Serra Pelada gold deposit was soon reputed to be an eldorado in the Amazon...documented. GEOLOGICAL SETTING AND THE SERRA PELADA DEPOSIT Serra Pelada is one of the numerous ore deposits...account of the Serra Pelada AuâPdâPt deposit is given here. The deposit is hosted by the Rio Fresco Formation...noted in the tables. PGM FROM THE SERRA PELADA DEPOSIT, BRAZIL PALLADIUM AND PLATINUM MINERALS FROM SERRA |  | | Journal (article/letter/editorial) | | high-level, very oxidizing environment. In the Itabira district, Minas Gerais, Hussak (1906a) found grains of...the iron ore mines of the world-class iron ore district of central Minas Gerais, known as QuadrilaÌtero... who proposed that the platinum from the Waterberg district ``deposited from colloidal solution as a...structure after 459 depositionââ (p. 260). At Waterberg, native platinum is intimately intergrown with...the âjacutingaâ mineralization of the Itabira district, ~50 km NE of Gongo Soco, native palladium was |  | Cabral, A. R., Lehmann, B., Kwitko, R., Costa, C. H. C. (2002) The Serra Pelada Au-Pd-Pt deposit, Carajas mineral province, northern Brazil: reconnaissance mineralogy and chemistry of very high grade palladian gold mineralization. Economic Geology, 97 (5) 1127-1138 doi:10.2113/gsecongeo.97.5.1127 | Journal (article/letter/editorial) | | 2002, pp. 1127â1138 THE SERRA PELADA Au-Pd-Pt DEPOSIT, CARAJĂS MINERAL PROVINCE, NORTHERN BRAZIL: RECONNAISSANCE...enrichment. Introduction The Serra Pelada gold deposit was discovered in 1980 by garimpeiros (artesanal...Olympic Dam in South Australia (Oreskes and Einaudi, 1990), Palabora in South Africa (Groves and Vielreicher...Mineralization of the Serra Pelada Deposit The Serra Pelada Au-Pd-Pt deposit is hosted in a folded, low-grade...few samples were taken from several drill cores south of the open pit (Fig. 2, Table 1). This mineralization |  | | Journal (article/letter/editorial) | | and Ir, rutheniridosmine, platinum, laurite, hongshiite, irarsite, cuprorhodsite, iridsite, prassoite...quantities of ores, important since earlier studies on South American platinum ores (Colombia and Brazil) had...hematite. Other species such as tulameenite and hongshiite (rare) (Fig. 4f) were observed, also an unusual...65 mm. (c) Border of the particle, showing the local development of larger ïŹbrous/tabular Ir-oxide crystals...Particle of Os-Pt-Ruiridium (white) containing hongshiite inclusions (grey), surrounded by a thick alteration |  | Zhmodik, S.M., Nesterenko, G.V., Airiyants, E.V., Belyanin, D.K., Kolpakov, V.V., Podlipsky, M.Yu., Karmanov, N.S. (2016) Alluvial platinum-group minerals as indicators of primary PGE mineralization (placers of southern Siberia) Russian Geology and Geophysics, 57 (10) 1437-1464 doi:10.1016/j.rgg.2016.09.002 | Journal (article/letter/editorial) | | platinum-bearing placer deposits have been worked in South Siberia since they were first discovered in the...Zhmodik) primary sources of the placer PGM, based on local analysis of individual PGM grains. The study provides...isoferroplatinum, Pt3(Fe0.6â
Cu0.4)âPt3(Fe0.4Cu0.6), and hongshiite, Pt1.1Cu0.9âPt1.2Cu0.8. Four groups of Pt(Fe-Cu)...%; (3) PtâFeâCuâCu 7â15 at.%; (4) Ptâ Cu(âFe) (hongshiite)âCu 40â50 at.%. The Cu-rich varieties of PtâFe...represented by Cu-rich varieties of platinum (up to hongshiite) are observed in the rim zones. Rims on PGM grains |  | | Journal (article/letter/editorial) | | Eastern Chrome Mine, Eastern Bushveld Complex, South Africa: A descriptive study with comparison of EPMA...Free State, P.O. Box 339, Bloemfontein 9300, South Africa Institut fĂŒr Mineralogie, Leibniz UniversitĂ€t...Free State, P.O. Box 339, Bloemfontein 9300, South Africa Dezernat fĂŒr Angewandte Geologie und Georisiken...sachsen-anhalt.de © 2020 Geological Society of South Africa. All rights reserved. Abstract A descriptive...compared to the sulphides of the chromitite layers. SOUTH AFRICAN JOURNAL OF GEOLOGY 2020 doi:10.25131/ sajg |  | | Report (issue) | | Platinum Symposium in Rustenburg, Republic of South Africa. The abstract volume for this meeting contained...mineralization, in countries like the Republic of South Africa, Canada, and Finland. Over the last five or...platinum-group minerals (PGM) beginning with a South African publication (Cabri, 1972) and culminating...of PGE deposits, ranging from the very important South African deposits to less well-developed PGE mineralization...of South Africa Lyndon, Washington College Park, Maryland Johannesburg, Republic of South Africa Kansas |  | | Book | | Hanley DESCRIPTIVE PLATINUM-GROUP ELEMENT ORE DEPOSIT MODELS â PRECIOUS-METALDOMINANT 3. Stratiform PGE...Sidorov, A.P. Krivenko 113-143 7. Descriptive Ore Deposit Models: Hydrothermal and Supergene Pt & Pd Deposits...145-161 DESCRIPTIVE PLATINUM-GROUP ELEMENT ORE DEPOSIT MODELS â BASE-METALDOMINANT 8. Sudbury Cu-(Ni)-PGE...Discovery and Characterization of the Nickel Rim South Deposit; Sudbury Ontario S.A. McLean, K.H. Straub, K...Polymetallic PGE-Au Mineralization of the Sukhoi Log Deposit, Russia V.V. Distler, M.A. Yudovskaya 457-485 |
|
