 | | Journal (article/letter/editorial) | | Deepest Exposed Crust of Brazil - Geochemistry of Paleoproterozoic Depleted Santa Maria Chico Granulites Leo...Federal do Rio Grande do Sul, Av. Bento GonCalves, 9500, 91500-000 Porto Alegre - RS, Brazil, e-mail:...processes of Brazil are investigated in the Santa Maria Chico Granulitic Complex of Rio Grande do Sul State...K-granites of the 600 Ma Brasiliano Cycle from southern Brazil. This high-grade rock association is rather comparable...of Scotland. Keywords: Granulites, lower crust, Brazil, geochemistry, geothermobarometry. Introduction |  | | Book | | Federal do Rio de Janeiro For his valuable participation in research - My collaborators, Maria Amélia...1982 Jules Roger Sauer ” Foreword For years Brazil has been the major producer of colored stones in...metamorphic rocks, the variety of gem deposits in Brazil is almost infinite. In addition to the mineral...assemblage one might expect from pegmatite dikes, Brazil also produces a very significant output of diamonds...written in English, and beautifully illustrated. “Brazil, Paradise of Gemstones’, by Jules Roger Sauer, |  | | Journal (issue) | | gem abstracts| Margaritologia pearl newsletter|Santa Fe Symposium proceedings|Fei cui testing in Hong...Myanmar|Pyrite and other sulphides from Peru|Purple spinel from Badakhshan, Afghanistan| Windmill-cut topaz...Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,...pink diamonds (natural, synthetic and treated), spinel, What’s New corundum, alexandrite, tanzanite |  | | Journal (issue) | | C h a r l e s E. Asl7baugh I I I Amethyst from Brazil D a v i d S t a n l e y Epstein NOTES AND NEW...13.8 ct; necklace 18.5 c t ) are from the Queen Mine, San Diego County, CA. In recent years, irradiation... Hays Editor Alice S. Keller 1660 Stewart St. Santa Monica, C A 90404 Telephone: (800)421-7250 x25 1... N] Dennis Foltz Santa Monica, CA Robert E. Kanc Los Angeles, CA Ray Page Santa Monica, CA Emmanuel...Emmanuel Fritsch Santa Monica, CA John I. Koivula Santa Monica, CA George Rossman Pasadena, CA C. W Fryer |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta Yellow Black 1 Delev Ilia Deleff...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW 2004 3 Cyan Magenta Yellow Black...NATIONAL MUSEUM IN SOFIA 66 OTHER COLLECTIONS OF MINE IN BULGARIA 71 COLLECTIONS IN OTHER CITIES AROUND |  | | Journal (article/letter/editorial) | | mineral deposits in the Precambrian of Eastern Minas Gerais, Brazil N. Angeli ~ and A. Choudhuri 2 1 Departamento...13.500 Rio Claro S.P.,Brazil 2 Instituto de Geoci@ncias,UNICAMP, 13.100 Campinas -S.P., Brazil Abstract...their mineral deposits from eastern Minas Gerais in southeastern Brazil are generally outlined to form a...occur at Ipanema, C6rrego Novo, Bela Vista ,de Minas, Rio Pomba and Liberdade. These ultramafic bodies...Introduction Almeida et al. (1981) have subdivided Brazil into various Precambrian provinces according to |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...tourmaline (84 x 26 mm), Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro...(Camara Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo...pedras preciosas do Brasil Bibliography 1. Gemology 2. Geology 3. Minerals - Brazil 4. Minerals- Classification... Mineralogy 6. Mineralogy - Brazil - History 7. Precious stones - Brazil I. Bartorelli, Andrea. II. Title |  | | Book | | Geosciences Institute University of São Paulo São Paulo Brazil Pedro Oyhantçabal Departamento de Geodinámica Interna...recognized similarities in the ‘old granites’ of Brazil and southern Africa. On the other hand, du Toit...‘Brazilian system’ defined by Alcide d’Orbigny 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 Pérez Terrane in Brazil and Uruguay in order to constrain its regional |  | Chaves, Alexandre de Oliveira, Ernst, Richard E., Söderlund, Ulf, Wang, Xinping, Naeraa, Tomas (2019) The 920–900 Ma Bahia-Gangila LIP of the São Francisco and Congo cratons and link with Dashigou-Chulan LIP of North China craton: New insights from U-Pb geochronology and geochemistry. Precambrian Research, 329. 124-137 doi:10.1016/j.precamres.2018.08.023 | Journal (article/letter/editorial) | | of Geosciences – Federal University of Minas Gerais - Brazil. alochaves@yahoo.com.br 2 – Department of...LA-ICPMS analyses on baddeleyite grains) on the Santa Maria de Itabira gabbroic intrusion. These ages suggest...Francisco (SF) and Congo cratons, spanning eastern Brazil and formerly adjacent central Africa. The SF/Congo...craton and nearby cratons (Amazon, West Africa, Rio de la Plata, and Kalahari) are surrounded by latest...Paleomagnetic data from coastal Bahia mafic dykes in Brazil places the SF/Congo craton in moderate to high |  | | Journal (issue) | | Pearl Testing 36 Emeralds from South America – Brazil and Colombia 48 Clinohumite – The Mountain Fire...Passionate Conflict 30 Book Report 58 Terra Spinel, Terra Firma 62 66 69 72 76 80 54 4 InColor |...rise of new economies such as China, India, and Brazil. The challenges have been numerous as these new...every ICA member, I would like to thank the IBGM in Brazil along with every company, individual, and government...Congress in the magnificent and beautiful city of Rio de Janeiro. I am convinced that it will be a very |  | | Journal (issue) | | (op. cit.). However, many treated cultured pearls do not show any distinctive features. Furthermore, when...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 |  | | Report (issue) | | Quartz variety amethyst, 3.5 cm tall Kakamunurle Mine, Kar0r, Tamil Nadu, India Bill Larson collection...Bottom: Quartz variety amethyst, 6.7 cm tall Wattika Mine, Murzinka, Sverdlovskaya Oblast', Russia Peter Lyckberg...kind of jewelry and stones were favored by well-to-do customers four centuries ago. Sir Robert Eric Mortimer...lapidary amethyst during that period. The first mine was opened at Valz-sous-Chateauneuf in the middle...ruby, amethyst, sapphire, garnet, peridot, zircon, spinel, and aquamarine. Royal Collection Trust © 2012 |  | | Journal (issue) | | 28 ct blue spinel, (6) 1.17 ct benitoite, (7) 2.14 ct blue sapphire, (8) 23.18 ct blue spinel, (9) 4.82...8.04 ct orange sapphire, and (18) 3.48 ct pink spinel. The necklace contains 25.85 ct of radiant-cut...Karl Schmetzer Petershausen, Germany C. W. Fryer Santa Monica, California John I. Koivula Carlsbad, California...marketed, and merchandized. In diamonds especially, the mine-to-market process has been severely tested. Vertical...Namibia, as well as Madagascar), South America (Brazil and Colombia), central and southern Asia (Sri Lanka |  | | Journal (issue) | | ........................................... 13 Brazil .................................................Lapidary, Hong Kong; CMP Asia, Hong Kong; GEA, Brazil; Emmanuel Piat, France; Israel Emerald Cutters...Sri Lanka Jacqui Grande, USA DIRECTORS Andrew Cody, Australia Sergio Martins, Brazil Emmanuel Piat, France...to improve the color. Some kunzite buyers from Brazil also discovered that rough crystals they purchased...of the production is mixed with calcite. The spinel mine at Kuh-i-Lal is being operated by a skeleton |  | | Book | | o<:- <•••••• , o' · -, 1 '•• 'O ~, o M eo do C•l -1t.:in M,E,~~o,....·:--,. noXc.ol J .... ·...appointed the renowned Spanish scientist Andres del Rio (1764-1849) to teach the first course in Mineralogy...Pefloles, Compania Minera Fresnillo, and Compaii.ia Santa Rosalia, who aJlowed me to photograph, gather samples...specimens from such places as the La Fe Mine in the state of Chiapas and Santa Rosalia in the state of Baja California...places as Mapimi in the state of Durango; Naica and Santa Eulalia in the state of Chihuahua; and Zacatecas |  | | Journal (issue) | | SIX APRIL 1993 Cover Picture The Hematita mine in Minas Gérais in 1987 - probably the richest alexandrite...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil' pp. 333-54) ISSN: 0022-1252 F.G.A. your key...Institute of America Gem Trade Laboratory, Inc., Santa Monica, California, USA Abstract A method for obtaining...obtained by this method from an inclusion in a pink spinel octahedron from Sti Sri Lanka. Photomicrograph...to be able to deterAlthough it is very important mine if if a gem is natural or synthetic, and treated |  | | Journal (issue) | | row, from left: Euclase, 2.3 cm, from the Gachalá mine, Guavió-Guatéque mining district, Boyacá Department...Budd photo. Tanzanite, 7.6 cm, from the Merelani mine near Arusha, Tanzania. Barry & Beth Kitt collection;...Fluorite on quartz, 13 cm, from the Yaogangxian mine, Chenzhou Prefecture, Hunan Province, China. The...kunzite), 9 cm, from the Urucum mine, Galiléia, Minas Gerais, Brazil. Gus & Jane Eifler collection; Holly...Eisemann Rick & Sharrie Ely Kevin Englet Doug & Maria Fiske Zach Goodman Cynthia & Mark Hoffmann Mark | | | Book | | appointed the renowned Spanish scientist Andrés del Rio (1764-1849) to teach the first course in Mineralogy...Pefioles, Compafiia Minera Fresnillo, and Compania Santa Rosalia, who allowed me to photograph, gather samples...specimens from such places as the La Fé Mine in the state of Chiapas and Santa Rosalia in the state of Baja California...‘S oiedod ee 00P coyaone®S niveree® By xe 28, @Rio gence Bi Menanene 7A Onn pc ot ole? a ao ©...>, OJose Colomo ,1 eas a — @50N Criatdbot 2, do toe Cosos Figure 1. The mineral provinces of Tehuantepec |  | | Journal (issue) | | Alice S. Keller FEAW ARTICLES The Anahi Ametrine Mine, Bolivia Paulo M. Vasconcelos, Hans-Rudolf Wenk...Rossman The Indaia Sapphire Deposits of Minas Gerais, Brazil David S. Epstein, Warren Brennan, and Tulio...Gemological Library and Infornlation Center, GIA, Santa Monica. A prolific author and fornlerly a diamond...identification services in the GIA Gem Trade Laboratory, Santa Monica. Mr. McClure has 16 years of experience in...and research at the GIA Gem Trade Laboratory in Santa Monica, Robert C. Kammerling is an associate editor |  | | Journal (issue) | | moving products from mine to consumer. The main cover image was taken at the AnahÌ mine in Bolivia, a major...(3) a 1.53 pink diamond from Argyle, courtesy of Rio Tinto; (4) an 11.16 ct sapphire from Madagascar,...market was down to 42% by value and 29% by volume (Rio Tinto Diamonds, 2008). It had unloaded its diamond...of the company (Even-Zohar, 2007). Because of the mine closures, De Beers’s market share by volume fell...pink diamonds (0.51 and 0.55 ct) from the Argyle mine in Australia were part of the 2007 Argyle pink diamonds |  | | Journal (issue) | | manager Famous mineral localities: the Broken Hill mine, Zam bia..............................................351 Famous mineral localities: the Cruzeiro mine, past and present ................................Warren A new find of crystallized rose quartz in Minas G e ra is ........................................B-2120 Schoten COVER: ELBAITE on quartz from Minas Gerais, Brazil. The crystal is 8.5 mm in width. Photo by...Kitwe, Zambia HISTORY The Broken Hill lead-zinc mine is located near the town of Kabwe, 140 km north |  | | Journal (issue) | | 1aquamarine, Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct kunzite, Brazil; (4) 8.14-ct...tourmaline, Queen Mine, Pala, California; (6) 15.18-ct tourmaline, Paraiba, Brazil; (7) 10.42-ct tanzanite...31-ct pink sapphire, Sri Lanka; (12) 5.79-ct pink spinel, Pamir Mountains, USSR; (13) 10.15-ct pink topciz...38-ct ruby, Burma; (17) 3.08ct tourmaline, Paraiba, Brazil; (18) 1.85-ct fancy purple-pink diamond, Argyle...Sinlzanlzas Editor Alice S. Keller 1660 Stewart St. Santa Monica, C A 90404 Telephone: (800) 421-7250 x25 |  | | Book | | Clopton, and the Authorffitle Index by myself. We do not intend to publish future indexes which are cumulative...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...gysinite-(Nd) and other rare minerals from [the Santa Lucia and Sa Duchessa mines,] Sardinia [Italy] (by...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 |  | | Book (edition) | | Square, half Dutch rose, and briolette — to what do these words refer? 5. Where is the world’s largest...Aquamarine 110 Precious Beryl 112 ~ 114 Chrysoberyl 116 Spinel 118 Topaz Amethyst ay yst Q 140 Hawk’s-Eye 140...Ruby.” Once thought to be a ruby, itis, in fact, a spinel, uncut, only polished, 2in (65cm) high. The State...belong—strictly speaking—also those synthetic stones that do not have a counterpart in nature (for instance, fabulite...gemstone trade for those synthetic stones which do not have a counterpart in nature (for instance, fabulite |  | | Book (edition) | | source ofgood advice); this book is as much yours as mine. 000001030626 TINT CONTENTS Contents Foreword...please use the index on page 312. =, FOREWORD Why do people buy gemstones? As an early student of gemmology...reading this book you'll love gemstones as much as |do. Apart from personal experience and published sources...them in locations not immediately visible. Please do not underestimate the importance of a gemstone’s...brilliance, scintillation (sparkle) and fire of a gem, do not affect its value. However, please be aware |
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