 | | 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 |  | | Journal (article/letter/editorial) | | com/loi/tigr20 Geology and Mineral Resources of Brazil: A Review a a Inacio De Medeiros Delgado , Augusto...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil b US. Geological Survey, Denver, CO, 80225 Version...Thorman (1994): Geology and Mineral Resources of Brazil: A Review, International Geology Review, 36:6,...rights reserved. Geology and Mineral Resources of Brazil: A Review INACIO DE MEDEIROS DELGADO, AUGUSTO J...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil AND CHARLES H. THORMAN US. Geological Survey, Denver |  | | 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 |  | | Journal (issue) | | Morro da Mina mine, Conselheiro Lafaiete, Minas Gerais, Brazil . . . . . . . . . . . . . . . . . . . ....of mines, wrote an article for the mining journal Iron Age in June 1876, extolling its virtues. âSince...collector Albert E. Foote (1846 1895), probably via the Iron Age article. Foote, who soon thereafter became one...Cove in Arkansas (in 1875), and from the Minnesota iron range, ostensibly for teaching purposes but he built...his father, Frederick Canfield became involved in iron mining, primarily in New Jersey, Virginia and North |  | | 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 |  | | 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...brownish grey; 12.00 Internal Twinning Reflect. Tantalite-(Fe) Melanovanadite yellow to yes orange near...bluish isotropic Wairauite yes Pararammelsbergite Iron, native Rammelsbergite pure white; 56.8 weak, yellow |  | | Journal (issue) | | iridescence observed in ârainbowâ hematite from Minas Gerais, Brazil. 40 DNA Techniques Applied to the Identification...iridescence in metamorphic ârainbowâ hematite from Brazil. The authors use electron microscopy, atomic force...colored by GR1 defects have been alluvial deposits in Brazil, Guyana, Venezuela, Zimbabwe, the Central African...never graded by GIA), and the 5.03 ct Aurora Green (Brazil), which sold at auction in 2016 for more than US...America has yielded a number of green diamonds from Brazil and Guyana (figure 7). Most show extensive surficial |  | | 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...................................................centimeter-size pyrochlore crystals from Uganda, and a tantalite crystal...................................... |  | | Book | | American Craton 2.7.1 Guiana Shield 2.7.2 Central Brazil Shield 2.8 African Craton: Southern Africa 2.8...3.7.2 Goias Massif, Tocantins Province, Central Brazil Shield 3.7.3 Sao Francisco Craton, Atlantic Shield...Craton 4.7.1 Amazonian Craton: Guiana and Central Brazil Shields (less Tocantins Province) 4.7.2 S5o Francisco...Francisco Craton 4.7.3 Tocantins Province (Central Brazil Shield) 4.8 African Craton: Southern Africa 4.8...composition 6.3.2 Uraniferous conglomerates 6.3.3 Banded iron formation (BIF) 6.3.4 Redbeds and paleosols 6.3 |  | | Book | | American Craton 2.7.1 Guiana Shield 2.7.2 Central Brazil Shield 2.8 African Craton: Southern Africa 2.8...3.7.2 Goias Massif, Tocantins Province, Central Brazil Shield 3.7.3 Sao Francisco Craton, Atlantic Shield...Craton 4.7.1 Amazonian Craton: Guiana and Central Brazil Shields (less Tocantins Province) 4.7.2 S5o Francisco...Francisco Craton 4.7.3 Tocantins Province (Central Brazil Shield) 4.8 African Craton: Southern Africa 4.8...composition 6.3.2 Uraniferous conglomerates 6.3.3 Banded iron formation (BIF) 6.3.4 Redbeds and paleosols 6.3 |  | | Book | | Geosciences Institute University of SĂŁo Paulo SĂŁo Paulo Brazil Pedro Oyhantçabal Departamento de GeodinĂĄmica Interna...recognized similarities in the âold granitesâ of Brazil and southern Africa. On the other hand, du Toit...âBrazilian systemâ deïŹned by Alcide dâOrbigny in Brazil (Beaumont 1844), arguably corresponding to the...geochronological data of the Precambrian basement of southern Brazil, Uruguay and Argentina were reported by Hart (1966)...and geochemical data of the Nico PĂ©rez Terrane in Brazil and Uruguay in order to constrain its regional |  | | 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 .................................. |  | | 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 . . . . . . . . . . . . . . . . . |  | | Book (volume) | | and Ediacaran, Russia, Sedimentary Rocks: Banded Iron Formations. Shields. Terranes, Overview. ii. To...and Ediacdran. Russia. Sedimentary Rocks: Banded Iron Formations. Shields. Terranes, Overview. GUIDE...and Ediacaran. Russia. Sedimentary Rocks: Banded Iron Formations. Shields. Terranes, Overview. 3. Index...Universidade Federal de Ouro Preto, Ouro Preto, Brazil Allen, P M Bingham, Nottingham, UK Allwood, A C...Universidade Federal de Ouro Preto, Ouro Preto, Brazil Marvin, U B Harvard-Smithsonian Center for Astrophysics |
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