 | | 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...and brand retailers. They visited the Muzo, Cunas, Pita and Chivor mines on the slopes of the Andean...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 (issue) | | Appellation 16 The Second World Emerald Symposium in Colombia The Second World Emerald Symposium Focuses on...Decade of Change A New Era for the Historic Coscuez Mine Esmeraldas Santa Rosa: Our Wealth is Green Rediscovery...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 |  | | 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...20th century, when the Gachalá, Peñas Blancas, La Pita and other deposits were first worked, these mines...major specimens of euclase, parisite-(Ce), quartz, pyrite and dolomite have also emerged. Episodes of bloody |  | | Journal (issue) | | 296 Photoluminescence Spectra of Emeralds from Colombia, Afghanistan, and Zambia D. Brian Thompson, Christian...Blue-green pyrope-spessartine with high vanadium • “La Lechuga” monstrance • “Montana Queen” sapphire •...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...gemologist at Centro de Desarrollo Tecnológico de la Esmeralda Colombiana (CDTEC), and his GIA coauthors |  | 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... UK; fallickt@gmail.com Institut des Sciences de la Terre d’Orléans (ISTO), UMR 7327-CNRS/Université...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 |  | | 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...20th century, when the Gachala, Penas Blancas, La Pita and other deposits were first worked, these mines |  | | Report (issue) | | top-quality emerald crystals from La Pita at Maripi, BoyacColombia valued at up to 1,000.00 US dollars...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) | | Spectrometer In late 2021, Gemetrix Pty Ltd (Perth, Western Australia) released the Inspectrum, an instrument...January 2021, the Government of South Australia’s Department for Energy and Mining issued a 36-page report...prospecting permit and ‘requirements to prospect and mine for opal both within and outside’ a field. Also...Diamonds In March 2022, Gemetrix Pty Ltd (Perth, Western Australia) updated its reference poster that displays...Rayner), diamonds from South Africa’s Koffiefontein mine and their inclusions (by Dr Nicole Meyer), and historical |  | | Journal (issue) | | Gemstone Mining and Supply by Damien Cody 42 Colombia – New Realities in the Emerald Industry by Guillermo...(54%) among all gemstones. unches FMC Fura Gems La t, stone marke colored gem e a th ), f C o M ze...dealer in Ratnapura, indicated that it came from a mine in the area. "I have never seen such a large specimen...Congress and got better acquainted during the following mine tour in East Africa. I had been invited to go on...Dominican Republic for business and, on a trip to Colombia, he met and fell in love with a Colombian woman |  | | Journal (issue) | | back cover shows emeralds from the Chivor mine in Colombia (3.90 ct faceted stone and 2.35 cm crystal)...ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS), where continual calibration with wellknown...difficult to be certain the stones came from the mine where they were collected. Careful documentation...database. GIA has a permanent field gemology department whose job it is to collect these samples as close...deposits of the western emerald zone (Yacopi, Coscuez, Muzo, Peñas Blancas, Cunas, and La Pita mines) and |  | González-Menéndez, L., Gómez-Fernández, F., Cunningham, J. K., Menéndez, S., Caldevilla, P., Gallastegui, G., Cuesta, A. (2021) Ordovician volcanic rocks record rifting, Variscan metamorphism and gold mineralization processes (Truchas Syncline, NW Iberia, Spain) Journal of Iberian Geology, 47 (1) 387-409 doi:10.1007/s41513-020-00147-8 | Journal (article/letter/editorial) | | Crustal contamination is absent given the elevated Nb/La ratio (1–1.5). These features indicate low melting...Ordovícicas afloran en el Macizo Varisco del noroeste de la Península Ibérica. Su composición es basáltica (con...y se realiza un modelo termodinámico para revisar la petrogénesis de * L. González‑Menéndez l.gonzalez@igme...contaminación cortical, dadas las elevadas relaciones de Nb/La observadas (1–1.5). Esta geoquímica indica bajos...superior y un ambiente tectónico de rifting continental. La presencia de restos de braquiópodos órtidos del Ordovícico |  | | 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) | | Shown here is the recovery plant at the Jwaneng mine in Botswana. Photo courtesy of Debswana. another...for a total value of about US$3.5 billion. The province of Saskatchewan will likely be an important player...wealth and income, and the growing awareness of western lifestyles promise a bright future for the diamond...for mining companies, their large clients, and western women. The dream must be shared with African diggers...ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS; figure 1), and laserinduced breakdown spectroscopy |  | | Journal (volume) | | determine the isotherms of the diagram and to deter- mine whether or not the five typical "clinkers" possess...temperatures give mixtures of marcasite and pyrite. methods give pyrite, which, under certain conditions, may...marcasite may be formed by method (4). Marcasite and pyrite were identified in the above products: (1) by microscopic...mixtures of the two minerals. Marcasite changes to pyrite with evolution of heat. The change proceeds very...000 atmospheres. Marcasite is monotropic toward pyrite. This is in accord with the greater inclination |  | | Journal (issue) | | on Petra Diamonds by Jim Davidson, (3) the Karowe mine by John Armstrong of Lucara Diamond Corp., (4) the...ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) as a tool for origin determination, but it...U-Pb ages were determined quasi-non-destructively by LA-ICP-MS for two high-value blue sapphires weighing...contain zircon inclusions that were age dated using LA-ICP-MS. Photos by Janine Meyer. Figure 15: The zircon...Hardy P., 2013. Blue sapphires from the Baw Mar mine in Mogok. Gems & Gemology, 49(4), 223–232, http://dx |  | | Book | | for the use of data photograph of the from mine their maps in at Qutdligssat The following companies...East Kilbride; The Exeter University Geological Department University of Liverpool Greenland research team...Palaeovertebrate faunas of Greenland, and Tertiary volcanic province of West Greenland which are drawn by H. Egelund...Survey of Greenland J. S. Myers J. R. Andrews Department of Geology B. Leth Nielsen The Geological Survey...The Geological Survey of Greenland D. B. Clarke Department of Geology Dalhousie University Scotia, Canada |  | | Book (edition) | | installed in a large underground copper mine where it breaks run-of-mine ore with compressive strengths up...Bogota Mexico City Lima San Juan Caracas Santiago La Paz Europe-Mideast- Africa Rotterdam Hants, England...de surface. au iour. carreau (d'une mine) au-dessus du n1veau de la mer au-dessus oe I'eau use abrasion...pu1ts absorbant, pu1sard absorption res1stenc1a a la abras16n roca abras1va absorbenie carb6n absorbente...puIts abyss1nien. puIts mstantene acceleration de la pesameur accelerateur comrole de reception essaI |  | | Book | | Chapter 4. Tomás’s First Mine: Ayoteco Chapter 5. Tomás de Fonseca’s Pachuca Mine and the Mining Revolution...Revolution 43 Chapter 6. Tomás’s Mine in Tlalpujahua Chapter 7. Tomás de Fonseca Reconnects 77 Chapter...Train of pack mules 40 Figure 4. Old Tlalpujahua mine entrance Figure 5. Mining tools Figure 6. Stamping...and client-friendly staff of the Archivo General de la Nación in Mexico City; To Rodrigo Espino Hernández...the admiral’s three small boats left the shelter of La Rábida’s estuary, they likely sailed past other boats |  | | Book | | Hfe Rojas, Bolivian tin miner / mina. Enghsh] la mines in the : the story of Juan June Nash ... 8 19 the Countryside to the in the in the Mine 19 Mines 95 Camp 1 ' Bury Myself Alive Every... BOLIVIA boundary Department boundary International National capitals Department capitals Town, village...Opportunities, a brochure prepared by the United Nations Department of Technical Cooperation for Development under...the major highway connecting La Paz and the oil that, large rich province of Santa Cruz in order to |  | | Journal (issue) | | Wood-Grained Chert and Its Significance in the Western Interior United States ..................... Peter...submitted to the editor, Dr. Norman D. Smith, Department of Geological Sciences, University of Lllinois...to Larry Doyle, University of South Florida, Department of Marine Science, l~0 Seventh Avenue South,...D. SMITH EDITORIAL ASSOCIATE: MARY ANN DIEHL Department of Geological Sciences, University of ILiinois...MIRIAM KASTNER Scripps Institution of Oceanography, La Jolla, California JEAN LAJOIE Universitt de Mon~al |  | | Book | | ve- A % latum $* V lyfsis Aldrouandi iusfem~ la tu a Phifofophis fub fcquenti a?n igmate V]/7taUs...diferifunt pura , vt aurum , & argentum , vel impura , mine conftituta , vei funt duriora , vt dis , & Ferrum...artificibus proie&umobferuauir Tertia fpecies paratur ex pyrite aerofo cremato,donec colorem Rubrica contraxerit...repertus Galenus fcriptum reliquit cadmiam ex lapide pyrite interdum fieri, ^ Huius quatuor fpecies commcaabat...corticibus arborum fub nol . o ^ » * : . mine Tutia? Alexandrina? affertur , quod fignum eft haftis |  | | Book | | quum terram folum foccundant. marga. manimarga & la- 1 cinatione Idem a- pidi*. FERRANDI IMPERATI...vitri tranfit. trita, & & parum funt pag. if. C. la: Agricola re- prehenfits inu. ta ceElione cupri...conveni- non Melior quoque habeat ligaturam. la Vidruvius nobis aliisque Quoniam autem hoc in...ab omni fere abfimilis,ideoque ■oneri ferendo la, qua: confolidationem Quapropter in adfaatret...feu marmora fub nucleis folum ex erant, feda,la- tegulis affabre compadis. . Partes Tedorii |  | | Book | | have nothing to fear from cenfure i but * not all mine; the world has alfo its lhare in it, face yours...texture, and remarkable weigm; while in the ftratum it la of a dulky blueilh colour, not vifcid or rfinf mg...that it is to be found genuine in, is the great mine of Goflelaer in Saxony, from whence I received my...difagreeable tafte, and when in the fire burns as all the Pyrite do, and like them calcines to a red matter like...France, but no where in fuch plenty as in the great Mine at Goffelaer in Saxony. It is a good Aftringent |
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