 | 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) | | MINERALIZATION (JACUTINGA), ITABIRA DISTRICT, MINAS GERAIS, BRAZIL ROGERIO KWITKO§ Centro de Desenvolvimento...Doce, BR 262/ km 296, 33030-970 Santa Luzia â MG, Brazil ALEXANDRE R. CABRAL§ AND BERND LEHMANN Institut...Companhia Vale do Rio Doce, 35900-900 Itabira-MG, Brazil ABSTRACT Hongshiite occurs associated with palladian...mineralization of the QuadrilĂĄtero FerrĂfero, central Minas Gerais, Brazil. Hongshiite occurs in grains up to about...hydrothermal fluids leading to hongshiite precipitation. Sperrylite, isomertieite, atheneite, sudovikovite, a âguangliniteâ-like |  | | Journal (article/letter/editorial) | | central zone are represented by troilite, cubanite, iron-rich pentlandite and talnakhite. The outer zones...the composition (Pd,Ni)2(As,Sb) associated with sperrylite PtAs2 and a mineral with the composition Pd2...Komsomolsky Mine. c Native Au in an association with sperrylite PtAs2, hollingworthite RhAsS and Pd-bearing Ni-cobaltite...mineral with the composition Pd5As2 associated with sperrylite surrounded by silicates. Pyrrhotiteâchalcopyrite...rim around PGM intergrowth which consists of sperrylite (PtAs2), atokite (Pd,Pt)3Sn, stannopalladinite |  | | Book (edition) | | sometimes red tinges, cobalt shows pink shades, while iron displays pronounced tones of red, brown, and occasionally...pore-fillings of gold (yellow). Right: Finely laminated iron oolith with a relatively coarse core of oolite fragment...form from magnetic precursors, such as greigite (iron-thiospinel; Fe3S4) which, during mild pore water...bluish isotropic Wairauite yes Pararammelsbergite Iron, native Rammelsbergite pure white; 56.8 weak, yellow...brown and orange Plumbopalladinite isotropic Sperrylite pronounced blue, orange-brown, and red 48 |  | | Catalog/List | | at a minimum. The specimen was collected in the Iron mines on the Island of Elba, possibly around 1790...stunning and pristine condition for a chunk of lowly Iron ore and comes with a custom acrylic base. Overall...listing a specimen as being from âNevadaâ or âMinas Gerais.â The situation has not markedly improved with...find in spite of the fact that many, very large, Iron ore bodies are crawling with the stuff. Even more...Surprisingly, this mine was operated for Talc, not Iron ore. Besides the overall cubic form there are tetrahexahedral |  | | Journal (issue) | | kunzite), 9 cm, from the Urucum mine, GalilĂ©ia, Minas Gerais, Brazil. Gus & Jane Eifler collection; Holly Smith...Topaz, 15 cm, from Hematita, Antonio Dias, Minas Gerais, Brazil. Tom Spann photo. (below right) Spinel...Aquamarine, 9 cm, from Corrego SĂŁo Francisco, Minas Gerais, Brazil. Tom Spann photo. Rhodochrosite on manganite...Almandine-spessartine on albite, 4.9 mm, Poaia pegmatite, Minas Gerais, Brazil. Beth Van Allen photo. 24 Elbaite tourmaline...cm, Pederneira mine, SĂŁo JosĂ© da Safira, Minas Gerais, Brazil. Supplement to The Mineralogical Record |  | | Catalog/List | | Styrian Erzberg, Styria, Austria The âFlowers of Ironâ as the old name âFlos Ferriâ translates, refers...refers to the âflowersâ growing from the walls of an Iron mine in Austria that has been worked for centuries... This fine example is notable for the role that iron minerals played in giving it a lovely golden color...spheres of some unidentified mineral, presumably an iron or manganese oxide. The usual fracturing around... 53021 MANGANITE Penokee Group, Ironwood, Gogebic Iron Range, Gogebic Co., Michigan, USA Very, very rarely |  | | Catalog/List | | 7 Meteorites 72004 Gebel Kamil Meteorite Slice Iron (ungrouped) East Uweinat Desert, Egypt The Gebel...Starting Bid: $250 72005 Odessa Meteorite End Cut Iron, IAB-MG Odessa, Ector County, Texas, USA Another...Bid: $2,500 72006 Campo del Cielo Meteorite Slice Iron, IAB-MG Chaco, Argentina Found: 1576 This small...are also called, are elongated crystals of nickel-iron consisting of interwoven ribbons of Taenite and...material only found in meteorites and not on Earth. The iron composition of this Campo del Cielo showcases the |  | | Conference Proceedings (Volume) | | Irene Mutti Integrated 3D mineral systems maps for iron oxide copper gold (IOCG) Deposits, Eastern Gawler...and petrophysical investigation of the Dannemora iron ore bodies, central Sweden .......................isotope chemistry of iron oxides â a vector for the exploration of concealed BIF-hosted iron ore bodies? .....and magnetite chemistry of the Malmberget apatite iron ore, Northern Norrbotten, Sweden .................analysis of the Nkout (Cameroon) and Putu (Liberia) iron ore deposits .................................. |  | | Report (issue) | | vanadium 50.94 chromium 52.00 manganese 54.94 iron 55.85 cobalt 58.93 nickel 58.69 copper 63.55...contain strong permanent magnets composed of neodymium-iron-boron. Photograph courtesy of Iberdrola Renewables...rare-earth elements, and antimony in China; niobium in Brazil; and platinum-group elements in South Africa and...sedimentary manganese deposits that are not enriched in iron...................................................chart showing niobium resources and reserves in Brazil, Canada, and the United States................ |  | | Book | | 4.3 Vila Nova and Serra do Navio belts, Amapa, Brazil 17.4.4 Rio Itapicuru greenstone belt Early Precambrian...Rock types Minerals BIF CAB IAT HMB MORB_ banded iron-formation calc-alkali basalt island are tholetite...25 99.41 â 42.5 28.1 29.4 = 29.1 41.3 295 Total iron expressed as FeO. ol: olivine; chr: chromite; cpx:...Volcaniclastic sediments (incl. greywackes) Chert and banded iron-formation (BIF) 0-1 neh Carbonate Quartzite, arkose...denser aluminous phase and preferential extraction of iron. However, density profiles modelled for possible |  | | Book | | Australia Ying Gu 8th 2004 Aguas de Lindoia, Brazil Henrique Kahn 7th 2000 Göttingen/Hannover,...BjĂžrn Eske SĂžrensen Norway Dr. Carina Ulsen Brazil Prof.Dr. Rolf Arne Kleiv Dr. Prof.Dr. Rune B...Comparing the mineralogical characterisation of iron ore by using QEMSCAN and PTA Oghazi, P, and PĂ„lsson...diffraction (XRD) and cluster analysis to grade control of iron ores Paine, M, König, U, and Staples, E 495 60...Ca2(Fe2âXAlX)O5 Raab, B and Pöllmann, H 67 Mineralization of iron deposits from Dehbid Area, Fars Province, South |  | | Book | | metallurgist were investigations on the history of iron and steel as well as that of copper. Prof. Dr. Marc... . 2.3.4 Industrial Phase: Developed Bronze and Iron Age and Later . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . 3.4.12 Iron . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . . . . . . . . 3.6.6 Iron Placers . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . 5.4.12 Iron Working Slags . . . . . . . . . . . . . . . . . |
|
