 | | Journal (article/letter/editorial) | | represents the culmination of two expeditions to Colombia and Ecuador in 1853 and 1857, inspired by the...January–February, 2016 The Emerald Mines of Colombia Thomas P. Moore The Mineralogical Record 2709...organics-rich sedimentary rocks in the Department of Boyacá in west-central Colombia. From the early 16th century...when Imperial Spain took over deposits at Chivor, Muzo and Cosquez, through the late 20th century, when...are on the rise and may someday catch up, but Colombia is still the source of 60% of all gem-quality |  | | Journal (issue) | | Appellation 16 The Second World Emerald Symposium in Colombia The Second World Emerald Symposium Focuses on...The Muzo Companies’ 10th Anniversary – A Decade of Change A New Era for the Historic Coscuez Mine Esmeraldas...More Exquisite Emeralds Magnificent Old Mine Emeralds 143 Mine Visit A Visit to Colombia’s “Green” Emerald...Thailand Board of Directors Gabriel Angarita, Colombia Saurabh Bansal, Germany Warren F. Boyd, Canada...Zoysa, Sri Lanka Advisors Jean Claude Michelou, Colombia Ruben Bindra, USA Immediate Past President Benjamin |  | Giuliani, G., France-Lanord, C., Cheilletz, A., Coget, P., Branquet, Y., Laumomnier, B. (2000) Sulfate Reduction by Organic Matter in Colombian EmeraldDeposits: Chemical and Stable Isotope (C, O, H) Evidence. Economic Geology, 95 (5) 1129-1153 doi:10.2113/gsecongeo.95.5.1129 | Journal (article/letter/editorial) | | are contained within two zones, the eastern and western emerald zones, in the Eastern Cordillera. Mineralizing...isotope composition range (δ18O = 17.8 ± 0.3‰). The western emerald zone contains carbonates with relatively...(eastern emerald zone: 7.7 < δ18OFluid < 12.8‰; western emerald zone: 8.2 < δ18O Fluid < 17.8‰) and emerald...(eastern emerald zone: 15.5 < δ18OFluid < 17.1‰; western emerald zone: 17.5 < δ18OFluid < 23.6‰) are typical...the Early Cretaceous evaporite brines. In the western zone, the isotope ratios do not show the covariation |  | | Journal (issue) | | EMERALD UPDATE Highlights of Bogota Symposium Colombia opened its arms to welcome the world’s leading...huge success with more than 300 delegates from Colombia and around the world taking part. More than 42...designers, traders and brand retailers. They visited the Muzo, Cunas, Pita and Chivor mines on the slopes of the...page: Rough emeralds mined by Gemfields at the Kagem mine in Zambia. (Photo courtesy of Gemfields) CONTENTS...Symposium Report and Presentations 42 6 16 17 18 20 Colombia Hosts First High-Level Global Emerald Symposium |  | | Journal (article/letter/editorial) | | S.A. , Calle 32, no. 13-07, Bogotà, A A 17521, Colombia Published online: 06 Jul 2010. To cite this article:...S.A., Calle 32, no. 13-07, A A 17521, Bogotá, Colombia Abstract Quadrupolar mass-spectrometric study...located on the eastern and western margins of the Eastern Cordillera of Colombia. Fluids in channels and...channels are higher by ~ 2 0 % in emeralds from the western group compared to those in the eastern deposits...lower (1.35 < H2O < 1.45 wt%) than in those of the western group (1.63 < H2O < 2.19 wt%), and it corresponds |  | | Journal (article/letter/editorial) | | calle 32, n ~ 1307, Bogotfi, Colombia Abstract. Emerald deposits of Colombia are confined to lower Cretaceous...mainly with pyrite, quartz, parisite, codazzite and fluorite. Emerald mineralization belongs to an epigenetic...constituent les <> fi 6meraude de la mine de Chivor. Ils rdsultent de l'infiltration pr6f6rentielle...districts miniers suivants: Pefias Blancas, Coscuez, Muzo, Yacopi qui sont situ6s dans les formations cr~tac~es...synclinal; 11: localit6; 12: occurrence; 13: mine en activit6; 14: mine abandonn6e; 15: baryum; 16: plomb; 17: |  | | Journal (issue) | | crystal with calcite, 6.5 cm, from the Cosq uez mine, Colombia; found in 1998. Scott Rudolph collection, ex............................................... 22 Mine Exploitation (or not) Today ......................represents the culmination of two expeditions to Colombia and Ecuador in 1853 and 1857, inspired by the...organics-rich sedimentary rocks in the Department of Boyaca in west-central Colombia. From the early 16th century...when Imperial Spain took over deposits at Chivor, Muzo and Cosquez, through the late 20th century, when |  | | Journal (issue) | | HPHT-Grown Synthetic Diamonds Diamonds from the Letšeng Mine Fall 2015 VOLUME 51, No. 3 EDITORIAL 221 Trapiche...this method. Meanwhile, Lesotho’s Letšeng-la-Terae mine is currently enjoying a renaissance. Rising prices...Mathieu, Christophe Morlot, and Yannick Branquet Colombia is the traditional source of the world’s finest...exclusively in the black shales of the country’s western emerald zone, is linked to the peculiar structural...the emerald gastropods extracted from the Matecaña mine in Gachalà (Vuillet et al., 2002) and the famous |  | Giuliani, Gaston, Dubessy, Jean, Ohnenstetter, Daniel, Banks, David, Branquet, Yannick, Feneyrol, Julien, Fallick, Anthony E., Martelat, Jean-Emmanuel (2018) The role of evaporites in the formation of gems during metamorphism of carbonate platforms: a review. Mineralium Deposita, 53 (1) 1-20 doi:10.1007/s00126-017-0738-4 | Journal (article/letter/editorial) | | and Macanal, and the western belt including the mining districts of Yacopi, Muzo, Coscuez, La Pita and...different between the western and eastern belts (Branquet et al. 1999a). The Muzo and Coscuez deposits...belt, Colombia, 3.9 × 2.6 cm. Collection MultiAxes. b Association of emerald and quartz, Muzo mines,... western emerald belt, Colombia. c Emerald crystals on quartz and adularia, Panjshir Valley, Afghanistan...flakes of phlogopite in a marble matrix, Minh Tien mine, Luc Yen mining district, Vietnam, 2 × 1 cm. e Nodule |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | Pauvres, BP 20, 54501 Vandœuvre cedex, France Department of Earth, Ocean and Atmospheric Sciences, University...Vancouver, BC V6T 1Z4, Canada; groat@mail.ubc.ca Department of Earth Sciences, Simon Fraser University, Burnaby...Austria); (IIB) Sedimentary rocks-black shale (Colombia, Canada, USA); (IIC) Metamorphic rocks (China...ct. Insufu rough emerald extracted from the Kagem mine in 2015. Lastly, on the 2th of October, the remarkable...extracted from the same mine [3]. Other giant crystals have been discovered in Colombia, such as el Monstro |  | | Journal (article/letter/editorial) | | Yardley A. Cheilletz Emerald mineralisation in Colombia: ¯uid chemistry and the role of brine mixing ...March 2000 Abstract Emerald mineralisation in Colombia is located in two distinct zones along the borders...Cordillera, some 80 km apart. Mineralisation in the western zone has been dated at ca. 35 Ma whereas in the...Because the same two ¯uids occur in both eastern and western zones, despite the dierence in space and time...Sinkankas and Read 1981), and the deposits in Colombia, which are the principal source of the world's |  | | Journal (issue) | | 296 Photoluminescence Spectra of Emeralds from Colombia, Afghanistan, and Zambia D. Brian Thompson, Christian...cluster in sapphire • Quarterly crystal: Barite in fluorite 373 Gem News International Blue-green pyrope-spessartine...synthetic star corundum, and the Colombian emerald mine-to-market industry. In our lead article, Drs. Sally...investigate the PL spectra of 48 samples from Colombia, Afghanistan, and Zambia. Their research strongly...CUBAGUA ISLA DE COCHE Costa Rica Panama Venezuela Colombia Brazil Ecuador El Amparo Chacopata Taguapire |  | | Report (issue) | | emerald crystals from La Pita at Maripi, BoyacColombia valued at up to 1,000.00 US dollars per carat;...emerald specimen with calcite from Coscuez, Boyaca, Colombia. Bill Larson collection; Jeff Scovil photo Bottom:...Wilson Whether from ancient India, Greece, Rome or Colombia, emeralds have always been a highly prized gemstone...CRPGICNRS in Vandoeuvre, France Colombia: Gonzalo Jara of Bogota, Colombia Africa: Federico Pezzotta from...Treatments: Ron Ringsrud of Saratoga, California 2 Colombia: The World's Top Producer .....36 Eastern Cordillera |  | | Journal (issue) | | Picture A crystal of emerald on calcite from Muzo, Colombia, from The Mineral Collection, Federal Institute...Keeper of Minerals in 1953 he ensured that his department was well equipped for the rapid analysis of...Stevenson. This was a veritable mine of of inif one can have a mine for pearls. When formation - if I...was a slave. He killed his master and escaped to Western Europe and returned to England in 1604. Here he...1991,22, 6 334 Gem thaumasite from the Black Rock Mine, South South Mrica Africa Ulrich Henn, Markus |  | Giuliani, G., France-Lanord, C., Zimmermann, J. L., Cheilletz, A., Arboleda, C., Charoy, B., Coget, P., Fontan, F., Giard, D. (1997) Fluid Composition, δD of Channel H2O, and δ18O of Lattice Oxygen in Beryls: Genetic Implications for Brazilian, Colombian, and Afghanistani Emerald Deposits. International Geology Review, 39 (5) 400-424 doi:10.1080/00206819709465280 | Journal (article/letter/editorial) | | S.A. , Calle 32, no. 13-07, Bogotá, AA 17521, Colombia e Ecole Nationale Superieure de Geologie—Institut...MINERALCO S.A., Calle 32, no. 13-07, AA 17521, Bogotá, Colombia B. CHAROY,3 Ecole Nationale Supérieure de Géologie—Institut...pegmatites and greisens and emerald from Brazil, Colombia, a n d Afghanistan. An i m p o r t a n t c o n...number of occurrences and deposits in Brazil, Colombia, and Afghanistan. In Brazil, the deposits are...Zimmerman et al., 1994), Capoeirana and Belmont mine (Minas Gerais state), Tauá and Coqui (Ceará state) |  | | Book | | of the Stone in Myth and in Rock 9 3 From Mine to “Mine”: The Emerald Business 21 4 Emeralds in World...John) is one of the most mysterious figures in Western myth. His ancestry is uncertain, but some claim...could identify the country and sometimes the actual mine a particular stone came from. However, vaporizing...said came from Alexander the Great, hailed from Colombia in the sixteenth century. The researchers have...emeralds seem to be most plentiful in places like Colombia, Russia, Zambia, Zimbabwe, Pakistan, and Afghanistan |  | | Journal (issue) | | Stockton and D. Vincent Manson 80 Emeralds of Colombia Peter C. Keller NOTES AND NEW TECHNIQUES REGULAR...description of mining and marketing activities in Colombia, are discussed in Dr. Keller's article i n this...by X-rays or by the more energetic gamma rays. Fluorite is frequently colored by natural irradiation....cerium, samarium, and europium are often present in fluorite and respond to irradiation by producing specific...Hassan, 1972).The Color in Gems "'"I Figure 18. Fluorite before (colorless) and after irradiation. mechanism |  | | Report (volume) | | Mineral Resources of Colombia (other than Petroleum) By QUENTIN D. SINGEWALD GEOLOGIC INVESTIGATIONS...PRINTING OFFICE, WASHINGTON i 1950 UNITED STATES DEPARTMENT OF THE INTERIOR Oscar L. Chapman, Secretary ...Emeralds...--------__ ____ ___________ __ ------Muzo mines__________________________-_____-----_---_-----_-Geography...mine________________________________-_______ Guayaquil mine ___________________________________________ Cau...ILLUSTRATIONS Page PLATE 5. Index map of part of Colombia, South America _______ In pocket 6. Map showing |  | | Journal (issue) | | ARTICLES An Update on Imperial Topaz from the Capio Mine, Minas Gerais, Brazil Daniel A. Sauer, Alice S....centuries. Today, the Capiio mine is one of the most productive in the region. This mine and the superb topazes...single copies or back issues to the Subscriptions Department. T o obtain a Japanese translation of Gems &)...Shane F. McClure-on Brazil's Cap50 Imperial topaz mine-is the type of locality project he would have pursued...Alice S. Keller, and Shane F. McClure T h e Capiio mine is one of the oldest and most productive fully mechanized |  | | Journal (issue) | | single copies or back issues to the Subscriptions Department. To obtain a Japanese translation of Gems & Gemology...marketed, and merchandized. In diamonds especially, the mine-to-market process has been severely tested. Vertical...well as Madagascar), South America (Brazil and Colombia), central and southern Asia (Sri Lanka, India...the areas omitted (e.g., Russia, North America, western Africa, and China), they were less significant—in...reference to the country rather than to the specific mine or region. For more on the specific localities, |  | | Book | | Alluvial Sapphires from the Orosmayo Region, Jujuy Province, Northwest Argentina: Insights into Their Origin...Cenozoic Alkaline Basalts of the Ratanakiri Volcanic Province (Cambodia), Southeast Asia—Trace Element Geochemistry...Panagiotis Voudouris is Professor of Mineralogy at the Department of Geology and Geoenvironment, National and Kapodistrian...Professor in Economic Geology-Geochemistry, at the Department of Mineralogy, Petrology, Economic Geology, School...pegmatite situated in the Borborema Pegmatitic Province (BPP) from Rio Grande do Norte in Northeast Brazil |  | | Journal (issue) | | net/news/post/2014/09/11/ Garnet-from-Red-Embers-Mine-Erving-MA.aspx). The garnets were mined from an...(Flemington, New Jersey). Currently named the Red Embers mine, Baskin has been secretly working the deposit with...suit (Tyvek; see Figure Figure 1: At the Red Embers mine, Jason Baskin wears a Tyvek suit while digging for...graphite schist (10 × 8 cm) from the Red Embers mine contains several almandine crystals and dravite...largest almandine cut to date from the Red Embers mine is this 4.74 ct round brilliant. The other cut stone |  | | Report (volume) | | Adularia-sericite gold deposits of Marmato (Caldas, Colombia): field and petrographical data BRANQUET, Y.,...troughs in Archaean volcanic rocks, Kambalda, Western Australia: indicators of early extension CLOKE...1984 having been appointed as a lecturer in the Department of Geology. In the intervening years, Dave carried...Distribution. MIRO, Lichfield. mineralization in Western Australia. Irish AssociaFITZGERALD, G., FEELY,... 12, 47-63. Compiled by P. N. Wyse Jackson, Department of Geology, Trinity College, Dublin 2. Fractures |  | | Book | | Consulting Geologist Department of Geology University EAFIT Medellín, Colombia Robert Peter Shaw Consulting...Tectonics Colombia 1938–1946 “Unique – a dream” Highlights • Key geological realms in Colombia were the...The Ganssers had four daughters (Ursula, born in Colombia, 1941; Manuela, 1949; Francesca, 1956; and Rosanna...and two sons (Mario, born in Colombia, 1943; Luca, also born in Colombia, 1945). In 2000, Gansser’s dear...the Escuela de Minas (Medellín, 1887) and the Department of Geology and Geophysics at the Unversidad Nacional |  | | Journal (volume) | | percentage of manganese in a sample from the W. T. Gray mine of which an analysis is given on page 4 is 70.76...miles apart. Sam.ple No. I was from the W. T. Gray mine, 4V 2 miles north-northwest of the village of Pfeiffer...HAUSMANNITE 4 and Sample No. 2 was from the Club House mine, one-half mile north of the town of Cushman on another.... 4-778 Sample from W. T. Gray mine. Sample from Club House mine. Includes a trace of iron. for the...Grenada: Belmont, St. Georges, 1905, Broadivay. Colombia: Vicinity of Santa Marta, 1 898-1901, Herbert |
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