 | Atencio, D., Filho, R. R. C., Mills, S. J., Coutinho, J. M. V., Honorato, S. B., Ayala, A. P., Ellena, J., de Andrade, M. B. (2011) Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: Crystal chemistry and Rietveld refinement. American Mineralogist, 96 (10) 1455-1460 doi:10.2138/am.2011.3594 | Journal (article/letter/editorial) | | 2011 Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: Crystal chemistry and Rietveld...562, 05508-080 SĂŁo Paulo, SP, Brazil 2 Rua Murici 62, Campinas, SP, Brazil 3 Department of Earth and Ocean...CearĂĄ, Caixa Postal 6030, 60455-900 Fortaleza, CE, Brazil 5 Departamento de FĂsica e InformĂĄtica, Instituto...Carlos, SP, Brazil 1 aBStRact A new occurrence of rankamaite is here described at the Urubu pegmatite...pegmatite, Itinga municipality, Minas Gerais, Brazil. The mineral forms cream-white botryoidal aggregates of acicular |  | | Journal (article/letter/editorial) | | The EBPP is situated mainly in the State of Minas Gerais, but encompasses also parts of the States of...Universidade Federal de Minas Gerais, Av. AntoĂnio Carlos 6277, 31 000 Belo Horizonte MG, Brazil the context of...Argentina, (2) the north-eastern or Borborema in Brazil, and (3) the Eastern Brazilian. A description of...pegmatites of the north-eastern Pegmatite Province of Brazil and their geochemistry have been studied by Beurlen...Province (EBPP) is situated mainly in the State of Minas Gerais but also encompasses the southern part of the |  | | Journal (article/letter/editorial) | | muscovite crystals, to 3 cm, on albite, Galileia, Brazil. T Taxonomy of the Mica Group The mica minerals...about 3 cm; Riacho Genipapo, near AracuaĂ, Minas Gerais, Brazil. All photos by the author of specimens in...crystals forming a 10-cm rosette, Jose Pinto mine, Minas Gerais, Brazil. Table 3. Interlayer-deficient micas...quartz at Riacho Genipapo, near AracuaĂ, Minas Gerais, Brazil (Cassedanne and Cassedanne 1981). A spectacular...spectacular recent find of muscovite was at the Jose Pinto mine, where more than a ton of beautifully crystallized |  | | Journal (article/letter/editorial) | | Separation Lake). The potential for a buried pollucite deposit associated with the SE pegmatite at Pakeagama...K-feldspar and mica, and is also present in a late pollucite-bearing vein. Keywords: tourmaline, granitic pegmatite...hĂŽtes. Le potentiel pour un gisement enfoui de pollucite associĂ© Ă la suite de pegmatites dite SE au lac...mica, remarquĂ©e aussi dans une veine tardive Ă pollucite. (Traduit par la RĂ©daction) Mots-clĂ©s: tourmaline...restricted to brief descriptions of the Urubu pegmatite, Minas Gerais, Brazil (QuĂ©mĂ©neur et al. 1993) and to Canadian |  | | Journal (issue) | | Front cover: Sulfur on Aragonite, 25 cm Cozzodisi mine, Casteltermini, Agrigento, Sicily, Italy. Adalberto...place in the Sardinian mines and the Traversella mine (Piedmont). The second edition of the Catalogue...chalcopyrite and various rare sulfosalts from the Bottino mine in Tuscany. MINERAL COLLECTING FROM THE POST-WAR...exploring the underground workings of an historic gold mine in the Brusson area, Val d' Ayas, western Alps....momentum came from my first visit to the Jeffrey mine in Asbestos, Quebec in 1997. I was fascinated by |  | | Journal (issue) | | ......... 67 by J. P. and J. O. Cassedanne The Urubu pegmatite and vicinity........................................... 93 by A. Falster The Rock Candy mine, British Columbia ................................COVER: ELBAITE on albite, from the Jonas mine, Minas Gerais, Brazil. Keith Proctor specimen; photo by Harold...Rio de Janeiro, Brazil INTRODUCTION Recently, a small pegmatite body in Minas Gerais has produced magnificent...are new to Brazil and very good specimens are still recoverable from the dumps or in the mine work ings |  | | Journal (article/letter/editorial) | | compositions from only one petalite-subtype pegmatite (Urubu, Brazil) have been discussed briefly in the literature...central intermediate zone, (70) quartz zone, (80) pollucite zone and (90) lepidolite zone. In contrast to...used by the Cabot Corporation, which operates the mine at Tanco (cf., Stilling 1998). The Tanco pegmatite...minerals, beryl and hafnian zircon. The quartz, pollucite and lepidolite zones (70), (80) and (90) are monomineralic...is mined for Ta (wodginite and tantalite), Cs (pollucite), Rb (lepidolite) and ceramic-grade spodumene |  | | Journal (article/letter/editorial) | | secondary minerals from the Manono, Maniema, Lutsiro, Urubu and Ungursai granitic pegmatites, the most significant...rare-element granitic pegmatites (Manono, Maniema, Urubu, Ungursai) or alluvial clastic sediments (Lutsiro)...(Thoreau et al., 1950). The Urubu granitic pegmatite (Minas Gerais, Brazil) is a lenticular body in micaschist...microcline, spodumene, lepidolite, amblygonite, pollucite, tantalite-(Mn) and thoreaulite (Barsanov & Ginsburg...(Zn Kα), mimetite (Pb MÎČ), microlite (Na Kα), pollucite (Cs Lα) and apatite (F Kα). The overlap corrections |  | | 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 |  | | Report (issue) | | crystal weighed 455 kilograms. 2m: The Queen Anne mine in Zimbabwe has produced crystals up to 2 meters...from some pegmatites. This specimen, from Minas Gerais, Brazil, is housed in the Deutsches Edelstein Museum...crystals are found in soils and stream gravels in Brazil. On the other hand, at high temperatures and pressures...surprise. In 1997, Gary and Mary Freeman began to mine the Orchard pit, a then insignificant pegmatite... Madagascar, it appears to have formed after pollucite was corroded and released a flood of cesium into |  | | Journal (issue) | | albite and lepidolite, mined recently at the Himalaya mine, Pala, California. William Larson collection; photo...Locality âMinas Gerais, Brazil (by J. S. White) [1970, vol. 1, no. 2, p. 73.] Locality âMinas Gerais, Brazil:... 6, p. 461-474.]* The reopening of the Himalaya mine (by D. Eidahl) [1977, vol. 8, no. 6, p. 475.]* The...301-308.]* New tourmaline discovered in [Itatiaia] Brazil (by A. Lallemant) [1978, vol. 9, no. 5, p. 298-299...298-299.] * More on rubellite from the Itatiaia mine, Brazil (by P. C. Keller) [1979, vol. 10, no. 1, p. |  | | Journal (issue) | | Mineralogical Record Inc. Articles The Bunker Hill mine, Kellogg, Shoshone County, Id a h o 339 by N....by R. S. W. Braithwaite Barite from the Niobec mine, Chicoutimi, Quebec .....................355 by...Kennedy and G. Gagnon Minerals of the Yates uranium mine, Pontiac County, Quebec . 359 by D. L. Leavitt ...QUARTZ with elbaite from Lavra da llha, Minas Gerais Brazil. The specimen, 4 inches tall, is from the...Erica Van Pelt, from a soon-to-bepublished book, Brazil â Paradise o f Gems, by Jules Sauer. back issue |  | | Book | | cm Page 251: Calcite, Irai, Rio Grande do Sul, Brazil * 12.5 x 10 x 10.5 em Page 252: Gypsum rosette...environment. solidified. In some basalts of India and Brazil, these cavities are large enough for a person...before it ABOVE: Imperial topaz, Ouro Preto, Minas Gerais, Brazil ° 3.3 x 2.7 x 1.8 om, 159.10 ct RIGHT: Round...mineral pigments. LEFT: Malachite, Bwana MâKubwa Mine, Ndola, Copperbelt, Zambia * 22 x 26 x 16 cm 22...Namibia * 20 x 18 x 14 cm Bladed stibnite, Ichinokawa Mine, Saijo, Shikoku, Japan * 10 x 1 x 1 om Acicular |  | | 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 |  | | Journal (issue) | | 239 Articles The Jaguaragu pegmatite, Minas Gerais, Brazil ............................. 165 by J....185 by B. M. England Copper roses from the Rose mine, near San Lorenzo, New Mexico ....................white calcite matrix from the Coscuez mine, Muzo, Colombia. This mine is located 12 km north, on the other...other side of the mountain, from the famous Muzo mine (see the article on the Colombian emerald districts...of the site. This process will not only make the mine extremely difficult or impossible to enter, it will |  | | Journal (issue) | | Roberts Victor, Jagersfontein, Sierra Leone, Star mine, Mwadui and Alamasi. Data are used to determine...M.O'D. The origin of diamonds in western Minas Gerais, Brazil. subducted component in the Siberian upper...bimineralic eclogite xenoliths from the Udachnaya mine, Yakutia, Siberia, were investigated to establish...alluvium/colluvium in the Brasilia Orogenic Belt, western Minas Gerais, Brazil. The age of the Belt is estimated at 700-450...discussed with reference to diamonds from Sao Luiz, Brazil. M.O'D. Trace element characteristics of the lower |  | | Journal (issue) | | on p. 79 Articles Native gold from the Jamestown mine, Tuolumne County, California......................collectors interested in visiting the Blanchard mine or other mines in the Hansonburg mining district...signed in at Bingham for entry to the Blanchard mine area for surface collecting. Underground collecting...strictly prohibited due to the hazardous nature of the mine workings, and visitors are required to acknowledge...agreement to collect in the area. The Blanchard mine will be closed to the general public until further |  | | Book (edition) | | MINE andtheir LOCALITIES JAN H. BERNARD AND JAROSLAV HYRSL INERALS DESCRIBED SINCE 2004 MINERALS...dist., China Fluomatromicrolite, x 25111111, Naipa mine, Mozambique Daliranite, 5111111, Zarshouran Au-As...Domafov, Czech Rep. Juangodoyite, 60111111, Santa Rosa mine, Chile Back cover photo: Ho/fertile on hematite...piment pseudomo,phs after realga,; 75 mm, Palomo mine, Pen, Page 3: Stepite on arsenic, 45 111111,Jachymov...2(4) - 4.0(6) - 2.58(10) - 2.04(5). At the Kiura mine, Saiki City, Oita pref., Japan. IMA 2012-101. Adolfpateraite |  | | Book | | Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals...Montijos quarry, Monte Redondo, Leiria Estremadura. The Montijos gabbro quarry at Monte Redondo, near the...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous |  | | Journal (issue) | | 1aquamarine, Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct kunzite, Brazil; (4) 8.14-ct grossular...tourmaline, Queen Mine, Pala, California; (6) 15.18-ct tourmaline, Paraiba, Brazil; (7) 10.42-ct tanzanite...38-ct ruby, Burma; (17) 3.08ct tourmaline, Paraiba, Brazil; (18) 1.85-ct fancy purple-pink diamond, Argyle...number of new localities. Fine alexandrites from Brazil, sapphires from Southeast Asia and Australia, emeralds...pegmatite gemstones (tourmaline, aquamarine, etc.) from Brazil, Pakistan, Afghanistan, and several countries in |  | | Book | | stone came from â someÂŹ times down to the actual mine. Today it is commonplace to see in sale catalogues...indicating a carbonaceous material. Emeralds from Brazil are usually full of thin liquid films and there...noticed in a goshenite (colourless beryl) from Brazil and in the same crystal a manganese apatite and...always twinned according to two different laws: the Brazil twin in which left- and righthanded crystals interpenetrate...to 1.70 are very likely to be glass since only pollucite and rhodizite among natural transparent crystalline |  | | Book | | Kyanite (blue) and Staurolite (brown) in Mica Schist. Monte Campione, Switzerland. 6 x 8 cm. Becausethey form...P L AT E 8 Chalcopyrite and Calcite. Groundhog mine, Vanadium, New Mexico. 4 x 5 cm. Thesecrystals formed...(The diamond deposits around Diamantina, Minas Gerais, Brazil, near the Orange River in South Africa,...sequence âą P L AT E 1 6 Euclase. Minas Novas. Minas Gerais. Brazil. 3x c m . Because beryllium atoms...Columbite and Albite. Governador Valadares, Minas Gerais, Brazil. . ; x 2 cm crystal. Like so many minerals |  | Melcher, Frank, Graupner, Torsten, GĂ€bler, Hans-Eike, Sitnikova, Maria, Henjes-Kunst, Friedhelm, OberthĂŒr, Thomas, Gerdes, Axel, Dewaele, Stijn (2015) Tantalumâ(niobiumâtin) mineralisation in African pegmatites and rare metal granites: Constraints from TaâNb oxide mineralogy, geochemistry and UâPb geochronology. Ore Geology Reviews, 64. 667-719 doi:10.1016/j.oregeorev.2013.09.003 | Journal (article/letter/editorial) | | 1998; rare-element pegmatites of the Serido Belt, Brazil, Baumgartner et al., 2006), little is known about... 3. Methods Concentrate samples from different mine sites in many African countries have been investigated... spodumene, eucryptite, amblygonite) and Cs (pollucite) resources (Martin, 1964). Sn-Ta ore occurs in...taken place in the north-east of Zimbabwe, at Benson Mine, Sutswe, Rusambo and Shamva. T Archean ages were...93 % concordant; sample 056, Fig. 4a) and Benson mine pegmatites (2587 ± 4 Ma; on average 97 % concordant; |  | | Book | | Deviations 371 Bolivia, 377 332 Proportions Brazil, 378 Angles of Faceted Bulgaria, 399 333 Burma... Cajon, Schmetzer, Heidelberg, De Janeiro, Brazil; Geological ton, VA; seum, Marie and Germany;...north of Thebes. No emeralds exist the emerald mine through stones. Qift as as other mineral, ...date of 1000 of Brazil. by the aborigines 40 Kunz inch (25 Indians of Brazil. these minerals In...pre-Columbian sites of Code, grave tematically of Brazil. labret made from a Colombian emeralds countries |  | | Book | | minerals were densely con- centrated. This type of mine was very at- tractive, since it avoided the need...materials Quartz crystals from Corinto, Minas Gerais, Brazil. Height: 15 cm. Sorbonne collection using...crys- Washing diamond-bearing gravel in Minas Gerais, Brazil. Photo: tals of such minerals as quartz...phrase ââgem qualityâ to de- from Salinas, Minas Gerais, well as an ââornamental stone.â Amethyst...and a jeweler might then speak of a ârootâ as Brazil Length: 9 cm. K. Proctor collection, United States |
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