| | Journal (article/letter/editorial) | altered chromitites of the Campo Formoso layered intrusion (Bahia State, Brazil): control by magmatic and...hydrothermal metasomatism in chromitites of the Campo Formoso layered intrusion produced spectacular chromite...stable at low temperature. The Campo Formoso layered intrusion of Brazil provides a useful example for...chromitite layers from one of the deposits of Campo Formoso (Cascabullhos), and emphasized the similarity...exposed in the mines of Cascabulhos, Pedrinhas, Limoeiro, and Mato Limpo. The principal aim of this investigation | | Lord, R. A., Prichard, H. M., S.SA, J. H., Neary, C. R. (2004) Chromite Geochemistry and PGE Fractionation in the Campo Formoso Complex and Ipueira-Medrado Sill, Bahia State, Brazil. Economic Geology, 99 (2) 339-363 doi:10.2113/gsecongeo.99.2.339 | Journal (article/letter/editorial) | Fractionation in the Campo Formoso Complex and Ipueira-Medrado Sill, Bahia State, Brazil R. A. LORD,â Clean...de GeociĂȘncias, Universidade Federal da Bahia, Salvador, Brazil AND C. R. NEARY Formerly at Natural Environment...retrograde alteration and serpentinization. In Campo Formoso a deeply eroded stratiform complex contains...orthopyroxene relicts in an upper unit at the Cascabulhos mine. Microprobe studies of chromite-rich specimens from...for mineralization elsewhere in the sill. At Campo Formoso the alternation of PGE-enriched chromitite and | | Mota-e-Silva, J., Prichard, H. M., Filho, C. F. Ferreira, Fisher, P. C., McDonald, I. (2015) Platinum-group minerals in the Limoeiro NiâCuâ(PGE) sulfide deposit, Brazil: the effect of magmatic and upper amphibolite to granulite metamorphic processes on PGM formation. Mineralium Deposita, 50 (8) 1007-1029 doi:10.1007/s00126-015-0585-0 | Journal (article/letter/editorial) | Platinum-group minerals in the Limoeiro NiâCuâ(PGE) sulfide deposit, Brazil: the effect of magmatic and...Springer-Verlag Berlin Heidelberg 2015 Abstract The Limoeiro NiâCuâ(platinum-group elements (PGE)) deposit...igneous tubular conduit system in northeastern Brazil. Representative ores from the deposit have been...13212-161, Brazil 2 Instituto de GeociĂȘncias, Universidade de Brasilia, BrasĂlia, DF 70900-970, Brazil 3 ...blebs that formed and were transported within the Limoeiro magma conduit. Keywords Platinum-group-minerals | | | Journal (article/letter/editorial) | Economic Geology, v. 108, pp. 1753â1771 The Limoeiro Deposit: Ni-Cu-PGE Sulfide Mineralization Hosted...Conduit in the Borborema Province, Northeastern Brazil Jonas Mota-e-Silva,1,2,â Cesar Fonseca Ferreira...01037-912, Brazil 2 Instituto de GeociĂȘncias, Universidade de BrasĂlia, BrasĂlia, DF. 70910-900, Brazil Abstract...Abstract The Limoeiro deposit, located in a high-grade mobile belt of the Brasiliano orogenic cycle (650â500...age of the ultramafic intrusion that hosts the Limoeiro deposit is not yet known, but regional geologic | | | Report (issue) | Zimbabwe. âą Eight industrialized countries4 that mine little or no chromite have a significant (an estimated...chromium (in the form of ores, 3 A captive mine is a mine that produces solely for the parent company...profit-motive criteria would normally result in mine closure. Chromite supplies have been disrupted....mined-the platinum-mineral operation (Western Platinum mine) in the UG2 chromitite layer of the western Bushveld...Reef ores were extracted from the Western Platinum mine, yielding 6,656 kg of platinum-group elements, 1 | | Mota-E-Silva, Jonas, Prichard, Hazel M., SuĂĄrez, Saioa, Ferreira Filho, Cesar F., Fisher, Peter C. (2016) Supergene Alteration of Platinum-Group Minerals and the Formation of Pd-Cu-O and Pd-I-O Compounds In the Limoeiro Ni-Cu-(PGE) Deposit, Brazil. The Canadian Mineralogist, 54 (3) 755-778 doi:10.3749/canmin.1500049 | Journal (article/letter/editorial) | Pd-Cu-O AND Pd-I-O COMPOUNDS IN THE LIMOEIRO Ni-Cu-(PGE) DEPOSIT, BRAZIL JONAS MOTA-E-SILVA Votorantim Metais...05423-180, Brazil University of Brasilia, Geosciences Institute, BrasıÌlia/DF, 70900-970, Brazil HAZEL M...Geosciences Institute, BrasıÌlia/DF, 70900-970, Brazil PETER C. FISHER School of Earth and Ocean Science...weathering of platinum-group minerals (PGM) in the Limoeiro nickel-copper and platinum-group element [Ni-Cu-(PGE)]...over the base metal sulfide-rich parts of the Limoeiro primary ore. The mobility of Pt is very dependent | | | Book | born hills appear parallel to Mahagiri range due to mine-waste dumping. Unpaved roads serve the movement...The sky is gloomy throughout the day due to the mine and road dust. Social evils, crime, alcoholism,...education, counseling, and training. Making stringent mine-safety rules is not the solutionâit has to be implemented...Ore Group Orissa Mining Corporation Limited Run of Mine Reconnaissance Permit tonnes tonnes per annum/day...significant in Canada, United States, Australia, Africa, Brazil, New Caledonia, Philippines, Indonesia, and the | | | Report (issue) | Costa Rica Guatemala Puerto Rico United States Brazil Colombia .. Tndo-China Japan Manchuria Netherlands...account of the shattered nature of the ore-bodies, the mine having been previously developed by means of rises...being up to 60 ft. thick and up to 450 ft. long. The mine is reached by a II- mile extension of the main railway...Chrome Corporation (S.A.) Ltd., Elandsdrift Chrome Mine, International Base Metals (Pty.) Ltd., and others...Corporation and the other companies supply runof-mine ores containing from 40 to 48 per cent. Cr2O3. The | | | Journal (issue) | from Brazil shows chatoyancy caused by flat hollow channels. Four-rayed star aquamarine from Brazil has...the c-axis. A tourmaline-quartz combination from Brazil has an iridescent chatoyancy Grey orthoclase moonstone...cat's-eye from Brazil A very unusual example of a cat's-eye was purchased in Brazil by the author in...measuring Figure 1: Chatoyant pale blue topaz from Brazil weighing 152.15 ct. Photo by J. Hyrsl. 32.94 x...described two topaz cat'seyes, one blue of 7.98 ct from Brazil and another colourless of 12.20 ct from Sri Lanka | | | Book | On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE...Allgood, C. Williams: Ramsdellite from the Mistake mine [Arizona] 14:333-335 ALLGOOD, ROBERT W. -with G...the Mistake mine [Arizona] 14:333-335 ALMA Famous mineral localities: the Home Sweet Home mine, [near Alma | | | Journal (issue) | where found in large deposits, such as in the copper mine at Rio Tinto in south-western Spain, it is still...Well-formed crystals also occur in Peru, Bolivia, Chile, Brazil, Japan and Mexico. 'Sand dollars' are particularly...was the rose cut. The discovery of diamonds in Brazil in the early decades of the eighteenth century...diamond-cutting industry based on rough being imported from Brazil. Bauer39 also quotes Geneva as the source of cut...back facets. Five diamonds from the Kelsey lake Mine , Colorado, and a 'Star of David' twinned macle | | | Book (edition) | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]âą6HzO...Harding Co .. South Dakota. and at the Fuemrole No2 mine, Emery co .. Utah. Also at Menzenschwand Scbwarzwald | | | Book (volume) | Lavrion, Greece (6) and Cu-poor adamite from Ojuela mine, Mexico (7) IR spectra of acid salts (silicates...Arsenato-Borates Sussexite 29 Mn2+BO2(OH) Locality: Gonzen mine, Sargans, St. Gallen, Switzerland. Description:...Veatchite Sr2[B5O8(OH)]2B(OH)3·H2O Locality: Billie mine, Death Valley, California, USA. Description: White...CaMgB6O8(OH)6·3H2O Locality: District # 99, underground mine, Inder boron deposit, Atyrau region, Kazakhstan...Ca4Mn2+3O3(BO3)3(CO3) Locality: Tachgagalt manganese mine, near Ouarzazate, Morocco (type locality). Description: | | | Book | 41)(Si3.86Al0.10 Fe0.04O10)(OH)2 from Mikhailovskii mine, Zheleznogorsk, Russia (Chukanov 2014a). IR spectra...magnesium serpentines is located at 3673â3685 cmâ1 (antigorite), 3687â 3697 cmâ1 (chrysotile) or 3685â3693 cmâ1...Fe3+-bearing Mg-poor schorl from the Limoeiro mine, Murta, Minas Gerais, Brazil, the band of OH groups in the...area), olmiite CaMn(HSiO4)(OH) from NâChwaning II mine, Kalahari manganese ïŹelds, South Africa (c), and...brandtite Ca2Mn(AsO4)2·2H2O from skarn (Harstigen mine, Sweden) (b), and roselite Ca2Co(AsO4)2·2H2O from |
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