 | | 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, |  | | 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 |  | | Journal (article/letter/editorial) | | expressed the opinion that the "trap" field of southern Brazil and adjacent regions was possibly greater in extent...hydrographic basin (Amazonia) and the eastern part of the Rio Paraguay drainage basin. The drainage basin of the...are northeast-southwest, parallel to the southern Brazil and Uruguay coast line, and to the major axis of...southern Goyaz, twelve miles north of the town of Rio Bonito, the writer found shales lithologically similar...Rocks of South Brazil. In English and Portuguese. Report to the Ministry of Industry, etc. Rio de Janeiro |  | | 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 (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 |  | | Journal (issue) | | gem abstracts| Margaritologia pearl newsletter|Santa Fe Symposium proceedings|Fei cui testing in Hong...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,...blood ruby, royal blue and cornflower sapphire, old mine/ Muzo green emerald, sunrise and sunset padparadscha...margaritologia.de. Santa Fe Symposium Proceedings Papers from 22 presentations delivered at the 2017 Santa Fe Symposium |  | | Journal (volume) | | Paul Cooper, program B. The Bromeliaceae of Brazil. 290 pp., 128 figs. (Publ. 4184.) L. The archeological...^utilications! in JBotanp THE BROMELIACEAE OF BRAZIL By LYMAN B. Department of Botany, U. With S...years of study in the United States, Europe, and Brazil. Much of the paper has been derived from an unpublished...has been limited to that strictly essential in Brazil and descriptions have been eliminated in favor...FIGURES Map Fig. : Distribution of Bromeliaceae in Brazil 7 I. Puya 2. Encholirium bradeanum Encholirium |  | | 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 |  | | Journal (article/letter/editorial) | | X-ray, genesis, density. Introduction Chert and chalcedony are microcrystalline members of the quartz family...often granular whereas chalcedony mainly shows a fibrous structure. Chalcedony is uniform in colour but...Agate nodules are generally completely full of chalcedony therefore any crystallisation process from low...maintain a full amygdale of chalcedony. The direct formation of fibrous chalcedony from the silica source...problematical: initial crystalline deposits of chalcedony would be expected to block incoming silica solutions |  | | Report (volume) | | Deposits in the Municipio de Januaria State of Minas Gerais Brazil GEOLOGICAL a O5 H i i OQ O PH W O O S5...1110-B Geology of the Lead-Zinc in « / State of Minas Gerais By JACQUES F. ROBERTSpN CONTRIBUTIONS TO...Fabiao_-__---_______-______-____-___--____-_____---__Mina Capao do Porco__--__-_.___.-_____-__._______-__--_---_ Alto...area west of Itacarambf, Minas Gerais. Geologic map and section of Mina Grande. Geologic map of Mina Janelao...Looking east along fracture at south edge of Mina Grande mineralized zone___-___--__--__________.___--__-___ |  | | 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...influence on the world amethyst market emerged in Brazil (see page 66), where the discovery of rich deposits |  | | 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 |  | | Book | | a U a < O SCIENTIFIC RESULTS or A JOURNEY IN BRAZIL. ¿T. LOUIS AGASSIZ, ’H I S TRAVELLING COMPANIONS...COMPANIONS. GEOLOGY AND PHYSICAL .OF B y GEOGRAPHY BRAZIL. ÓH. FBED . HARTT, P R O F E S S O R o r Q B...volume on the Physical Geography and Geology of Brazil as a summary of the scieutiftc results of my explorations...is the result of two journeys made by myself in Brazil. The first was undertaken under the direction of...Geology and Physical Geogi’aphy of the coast between Rio and Bahia, going over a very large part of the ground |  | | 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 |  | | 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...the production is mixed with calcite. The spinel mine at Kuh-i-Lal is being operated by a skeleton crew |  | | 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...to be able to deterAlthough it is very important mine if if a gem is natural or synthetic, and treated...gemmologists many gem identifications and appraisers do not have immediate access to diffractometers, testing |  | | 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 |  | Dobrzyński, Dariusz, Duliński, Marek, Birski, Łukasz, Barrett, Jordi (2021) Origin of the chemical composition of São Francisco ultra-fresh thermal water (Itabira region, Minas Gerais, Brazil) Applied Geochemistry, 134. 105090pp. doi:10.1016/j.apgeochem.2021.105090 | Journal (article/letter/editorial) | | ultra-fresh thermal water (Itabira region, Minas Gerais, Brazil) Dariusz Dobrzyński a, *, Marek Duliński...Gonçalves Dias 916, Belo Horizonte, 30140-091, Minas Gerais, Brazil b A R T I C L E I N F O A B S T R A C...in the Fazenda Giráu, near Itabira (Minas Gerais state, Brazil) for the first time. The studied water...modelling Geothermometer Therapeutic water Minas Gerais Brazil 1. Introduction The object of investigations...mountain range in Itabira microregion, Minas Gerais state, Brazil (Fig. 1). The São Francisco thermal |  | | Journal (article/letter/editorial) | | Department of Geology, University of G. WL,~ S&o Paulo. Brazil (Received 22 July MM) Atit-Potassium-argon agea...and 16 diabaeeafrom the ParanB baein of Southern Brazil. Histograms of both basalt and diebase agea exhibit...been found for South Africa. The basaltic rocb of Brazil differ, however, both in age and potassium content...experiments ehow that whole-rock dating of diabaee from Brazil is occaeionallysusceptible to dizcrepancieeof up...KAWASEITA and J. H. REYNOLDS feature of Southern Brazil. Most authors place these rocks in the Jurassic |  | | Journal (issue) | | 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...Pakistan; and pink to red tourmalines from Nigeria and Brazil. Diamond was mined in northern Canada for the first...reference to the country rather than to the specific mine or region. For more on the specific localities, |  | | Journal (article/letter/editorial) | | OF THE SERRA DISTRICT, R. H. DO NAVIO No. 4 MANGANESE BRAZIL • NAGELL CONTENTS PAGE Abstract............................... Origin of the Serra do Navio deposits..................................... ABSTRACT The Serra do Navio district,in the Federal Territory of Amapa,Brazil, is producingmore than...Com•rcio de Min•rios S.A.--ICOMI, Janeiro, Brazil. 481 Rio de 482 R. H. NAGELL distributed alongthe...INTRODUCTION THE Serra do Navio manganese district,in the Federal Territory of Amapa, Brazil(Fig. 1),'is oneof |  | | 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 | | | 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 |  | | Book | | Occurrence: The Americas 63 USA 64 Mexico 72 Panama 75 Brazil 75 Canada 80 7 Occurrence: Rest of the world 81...553 0.009 0.013 2.651 7 2.58-2.64 61/z Chalcedony 1.53-1.54 QUARTZ Varieties Habit Pleochroism...almost all rock types and in most countries. CHALCEDONY Agate (light to dark colours in concentric bands...bloodstone (dark green with red flecks, opaque), chalcedony (grey or blue without banding, translucent; a...fine quartz crystals come from the State of Minas Gerais, Brazil, and occur in vugs or pockets which are |  | | Report (issue) | | crystal weighed 455 kilograms. 2m: The Queen Anne mine in Zimbabwe has produced crystals up to 2 meters...respectable, sometimes exceeding 1 meter, but they do not approach the giant-sized crystals found in the...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 |
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