 | | Journal (article/letter/editorial) | | (WVe_Mn ~' 300 cal/mole). For the join spessartine-pyrope, Ganguly and Saxena (1984) and Dahl (1980) adopted...0.001 2.085 6 700 680 682 772 942 Buritirama, Brazil Peters et al. (1977) B-5-22-64-6 0.020 0...Mn-rich bulk compositions (Karnataka, Garbham, Buritirama, Tatehira and Ruby Range) where X~ t varies between...the Ganguly and Saxena (1984) model overestimates pyrope activity in garnet. This may rather be related...of synthetic almandine-grossular and almandine-pyrope garnets from high-temperature solution calorimetry |  | | Journal (article/letter/editorial) | | mol.% ample Spessartine Almandine Grossular Pyrope Andradite 88 ___ 2 75 -I- 4 0.6 __. 0.6 13.1...5O 5o Fe+Mg Ca Mn NangodiBelt ~kxBuritirama,Brazil ~WabushIronFm. 4\ 5~ / 0 Rang/~.l~~l e .......Literature data obtained from Peters et al. (1977, Buritirama), Jaffe et al. (1961, Nsuta), Dasgupta et al...Belt, Ghana: Mn-Actinolite Dannemorite [] Buritirama, Brazil: 9 Nangodi Belt, Ghana: Tirodite, Actinolite...Literature data obtained from Peters e t al. (1977, Buritirama), and Dasgupta et aI. (1988, Sausar Fm.). gondites |  | | Journal (article/letter/editorial) | | to rim. Sps: Spessartine, Alm: Almandine, Prp: Pyrope, Grs: Grossular, Adr: Andradite, Cal: Caldredite...components plotted in (spessartine + almandine + pyrope) – grossular – andradite space. Cores and rims...1259–1278. Ohmoto, H. & Rye, R. O. (1970): The Bluebell Mine, British Columbia .I. Mineralogy, parageneses, fluid... V. (1977): The manganese deposits of Buritirama (Para, Brazil). Sch. Min. Petrol. Mitt., 57,: 313–327 |  | Dasgupta, Somnath, Banerjee, H., Fukuoka, M., Bhattacharya, P.K., Roy, Supriya (1990) Petrogenesis of metemorphosed manganese deposits and the nature of the precursor sediments. Ore Geology Reviews, 5 (4) 359-384 doi:10.1016/0169-1368(90)90039-p | Journal (article/letter/editorial) | | with variable andradite (2.5-9 mole% ) and low pyrope content. In assemblage (x), the garnets contain...(Huebner, 1967), Alps (Peters et al., 1973, 1978) and Brazil (Peters et al., 1977). The problem on the stabilities...several natural occurrences (Balmat, USA; Buritirama, Brazil; Labrador, Canada; Tatehira, Japan), but...carbonate- 382 silicate protores (queluzites) from Brazil and their weathering products. Abstr. Symp. 104...of the Quelez district, State of Minas Gerais, Brazil. Am. J. Sci., 18. Devaraju, T.C. and Laajoki, K |  | | Report (issue) | | analyses of 5 hornblendes, 2 cummingtonites from Frood mine, Sudbury, Ont. Distribution of Al between IV and...Cienc. bU, 197-202 (1978). Analyses from Parana Brazil. AMPHIBOLE. Glassley and Sorensen, J. Petrol. 21...(1977)(English). Probe analyses (4) from Buritirama, Brazil, of series MnC03 - CaC03 - MgC03 (MnO 5.83...Abstr. 30, 168 (1979). Occurrence at Carl in gold mine, Nev., spectrographic analysis, G 8.9. AWARUITE...barbosalite (av. of 2) (H20 by difference) from Brazil. BARBOSALITE. Gevorkyan and Povarrenykh, Konst |  | | Report (issue) | | Average composition from various types of ore, Thierry mine, Ont. ACANTHITE. Sakharova and Bryzgalov, Mineral...87M/2325 (1987) Analyses (not in abs.) from'Koryu mine, Hokkaido, Japan AIKINITE. Boldyreva (Zap. Vses...Programs with Abstr. 8, 21 (1983). New occurrences, Brazil and Bikita, Zimbabwe, a 4.473, b 11.308, c 4.775A...(1984) (English). Microprobe analyses (3) from pyrope peridotites, Bohemia. AMPHIBOLE. Dobrokhotova,... 281-294) (1986) (Eng) Analyses (3) from Buritirama, Brazil - Phase relations in system CaO-MnO-MgO-K20-Al |  | | Journal (article/letter/editorial) | | signi®cant amounts of grossular (around 8 mol%) and pyrope (around 5 mol%). The piemontite of these associations...of the braunite nodules described in the Buckeye Mine (California) by Huebner and Flohr (1990) and Mn...described by Huebner and Flohr (1990) in Buckeye Mine. The alkali contents (Na2O K2O) are high in the...tephroite-bearing rocks from the Hoskins manganese mine, New South Wales, Australia. N Jb Mineral Abh 161:...NJ, de Villiers JPR (1986) The Mamatwan manganese mine of the Kalahari manganese ®eld. In: Annaeusser CR |  | Santos, Felipe Holanda dos, Amaral, Wagner da Silva, Konhauser, Kurt, Martins, Douglas Teixeira, Castro, Marco Paulo de, Queiroga, Glaucia Nascimento, Chi Fru, Ernest, Andersen, Morten B. (2021) Unraveling sedimentary precursors and metal enrichment of high-grade metamorphosed manganese-rich rocks from the Borborema Province, northeastern Brazil. Ore Geology Reviews, 137. 104283pp. doi:10.1016/j.oregeorev.2021.104283 | Journal (article/letter/editorial) | | rocks from the Borborema Province, northeastern Brazil Felipe Holanda dos Santos a, b, *, Wagner da Silva...Universidade Federal do Oeste do Pará, Santarém, PA, Brazil Departamento de Geologia e Recursos Naturais, Instituto...Universidade Estadual de Campinas, Campinas, SP, Brazil c Department of Earth & Atmospheric Sciences, University...Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil e Centre for Geobiology and Geochemistry, School...Simplified map of the Borborema Province (northeastern Brazil) and Birimian succession from West Africa for the |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite...Landmann. CDD-549 Indexes for systematic catalog: 1. Brazil: Minerals and precious stones: Mineralogy and gemology |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | deposits of such minerals in adjacent areas of Brazil and Venezuela suggest that eastern Colombia may...deposits, based on analogy with adjacent areas in Brazil and Venezuela. An initial reconnaissance should...is continental or transitional Skarn Cu (2.6) Mine Vlejs Los Guayabas (Tollma) Cranates (Hulla) Also...Cty, CA Santa Helena, Antioquia, Colombia Co to Mine, Luzan, P.I. References Wells, F. G. et al 1946...mafic volcanic Homestake, South Dakota Passagem, Brazil Kirkland Lake, Canada 29 References Rye and Rye |  | | Report (volume) | | based on considerations that extend far beyond the mine itself, in some instances relating to the overall...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...government believed might someday be economic ta mine. Stratiform deposits of large areal extent, such...EXAMPLES High Plateau, Del Norte Cty, USCA Coto Mine, Luzon, PLPN (Wells and others, 1946) (LeBlanc...DEPOSITS Name Ace of Spades Adobe Canyon Gp. Ajax Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue |  | | Book (edition) | | communities to be plunged into unemployment because a mine or mines have become unprofitable, a need to earn...for, and hence the price of, the mine product, well in advance of mine development. A useful recent discussion...market in the 1980s from a non-member of the Council-Brazil. Brazilian production rose from 6000 t in 1981...producers have spent vast sums of money on exploration, mine development and production but have paid too little...minerals (based on Noetstaller 1988). Prices are ex-mine or processing plant The role of the firm Average |  | | Book (volume) | | quartz-hematite-anthophyllite schist, Smallwood mine, Upper Wabush Iron Formation, S. W. Labrador (Klein...Mn) = 0.34, accompanied by garnet (almandine 80%, pyrope 12%) was described by Vejnar (1974) occurring in...the Coronation mine and surrounding area. In Symposium on the gedrite of Coronation mine, Saskatchewan...rock and associated ore minerals from the Yanahara mine, Okayama Prefecture, Western Japan. — Studies in...en cavities in quartz—biotite gneiss, Hiddenite mine, Alexander County, South Carolina (Palache et al |  | | Book | | base of the Complex (Vermaak, 1976). At the Atok mine, platinoid minerals tend to occur at the boundaries...common in youn¬ ger conglomerates in Minas Gerais, Brazil, and West¬ ern Australia (Robertson et al., 1978)...belt of southern Africa and in similar rocks in Brazil, and there are scattered minor occurrences in the...Rye, D. M., and Rye, R. O., 1974, Homestake gold mine; I. Stable isotope studies: Econ. Geol., v. 69,...E., 1976, The Merensky Reef at the Atok platinum mine and its environs: Econ. Geol., v. 71, p. 249-260 |
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