 | | 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...century, when Imperial Spain took over deposits at Chivor, Muzo and Cosquez, through the late 20th century...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...Coscuez Mine Esmeraldas Santa Rosa: Our Wealth is Green Rediscovery and History of the Chivor Emerald...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 (issue) | | staffing arrangements 125 THE CHIVOR EMERALD By PAUL W. C MINE JOHNSON O L O M B I A has five... There are two principal emerald districts in Colombia, M u z o and Ghivor. T h e M u z o district is...new mine has been discovered near Muzo. T h e Ghivor Mine, previously known as the Somondoco Mine, as...nearest town, is the only operating emerald mine in Colombia not controlled by the Colombian Government...situated in the township of Almeida, Department of Boyacâ, Republic of Colombia, South America. Located at approximately |  | | Journal (issue) | | Characteristics of Blue to Yellow Beryl History of the Chivor Mine, Part I EDITORIAL 1 Spring 2020 VOLUME 56...into Corundum and Beryl Color, Jade Artistry, the Chivor Emerald Mine’s History, and Swiss Rhodonite… Duncan...yellow beryl. p. 35 66 History of the Chivor Emerald Mine, Part I (1880–1925): From Rediscovery to...Ortiz Chronicles developments at the Chivor emerald mine in Colombia between 1880 and 1925, based on archival...Ukrainian heliodor found in the Volodarsk-Volynskii mine. The carving weighs 1,754.70 ct and measures 165 |  | | Journal (issue) | | GEMOLOGICAL INSTITUTE OF AMERICA Canada’s Diavik Mine FabergĂ© Imperial Bodyguards Responsible Sourcing...Production of Colored Stones Journey to the Chivor Emerald Mine Summer 2016 VOLUME 52, No. 2 EDITORIAL...EDITORIAL 103 Responsible Mining, a Trek to Chivor, and a Dash of FabergĂ© Duncan Pay FEATURE ARTICLES 104 ...Mining Diamonds in the Canadian Arctic: The Diavik Mine James E. Shigley, Russell Shor, Pedro Padua, Christopher... In Rainier’s Footsteps: Journey to the Chivor Emerald Mine Robert Weldon, Jose Guillermo Ortiz, and |  | | 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...century, when Imperial Spain took over deposits at Chivor, Muzo and Cosquez, through the late 20th century |  | | 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...function of the Gemological Institute of America's Department of Research is the appliA cation of modem, advanced... (1979) Recent activities i n GIA's research department; clarification of composition of Maw-sit-sit... EMERALDS OF COLOMBIA By Peter C. Keller There has been more activity i n emerald mining i n Colombia in the |  | | Journal (issue) | | Luzonite • copper arsenic sulfide • Chinkuashih mine, Keelung, T a iw a n • 4x5 $ 5 0 .0 0 , 2x3 $ 2...from Verespatak, Rumania; copper from the Mohawk mine, Michi gan; cuprite (var. chalcotrichite) from...further slide displays of m /m s of some of the Foote mine, Kings Mtn., N orth Carolina minerals. Yedlin spoke...cussing the geology and mineral ogy of the Grandview mine, Grand Canyon, Arizona. He displayed some of the...locality. The new benstonite was found in the Minerva mine, Cave in Rock, Hardin County, Illinois. It occurs |  | | Book | | Gem Deposits: 35 39 The Emerald Deposits of Colombia 4. Gemstones Formed in Pegmatites: 57 Gem Pegmatites...chapters: hydrothermal deposits, with the emeralds of Colombia as an example; the pegmatites of Minas Gerais...thanks goes to Dr. Art Montana, Chairman of the Department of Earth and Planetary Sciences at UClA for his...photomicrographs of opal. The South Australia Department of Mines and Energy provided the photographs..., was responsible for photographs of the Argyle mine and the spectacular pink diamond. The Smithsonian | | | Book | | Gem Deposits: 35 39 The Emerald Deposits of Colombia 4. Gemstones Formed in Pegmatites: 57 Gem Pegmatites...chapters: hydrothermal deposits, with the emeralds of Colombia as an example; the pegmatites of Minas Gerais...thanks goes to Dr. Art Montana, Chairman of the Department of Earth and Planetary Sciences at UClA for his...photomicrographs of opal. The South Australia Department of Mines and Energy provided the photographs..., was responsible for photographs of the Argyle mine and the spectacular pink diamond. The Smithsonian |  | | 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...1991,22, 6 334 Gem thaumasite from the Black Rock Mine, South South Mrica Africa Ulrich Henn, Markus...in South Africa. The locality is the Black Rock Mine in the Kalahari Manganese Field (Figure 1). That |  | | Journal (article/letter/editorial) | | Medal (gold) and gold-and-quartz specimen, Paymaster mine, Timmins, Ontario, Canada. Royal Ontario Museum...Brookite, Anatase, & Rutile from the Silver Link Mine, Ouray County, Ouray, Colorado, T. Rosemeyer, 327-30...R.B. Cook: Beryl, Variety Emerald, Chivor Mine, Chivor, Colombia, 332-34; Demantoid, Val Malenco, Sondrio...the world from PATACONIA ARGENTINA CONDOR AGATE] MINE OWNED See our article in Rock & Gem, issueMarch...Donovan 115- 19 Elpasolite, Virginia, 238 Emerald, Colombia, 332 Enargite, Colorado, 330; Utah, 378, 409 Equus |  | | Catalog/List | | Greenside Mine, Patterdale, Cumbria, pinkish grey xls. 50x30x20mm. ÂŁ9. 6. BARYTOCALCITE. Blagill Mine, Alston...12x10x8mm. 80x80x40mm. ÂŁ375. 11. CALCITE. Carrock Mine, Carrock Fells, Cumbria. a quartz/calcite veinstone...level". 80x70x15mm. ÂŁ18. 12. CALCITE. Cambokeels Mine, Weardale, Cumbria. A sharp lustrous hexagonal xl...60x60x2Ontn. â– max. ÂŁ285. 14. CALCITE. New Glencrieff Mine, Wanlockhead, Scotland, A small group of three colourless...30x20x20mm. ÂŁ6. 15. CALCITE ON NATIVE COPPER. Caledonia Mine, Michigan, USA. Several sharp calcite xls to 10mm |  | | 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 |  | | Report (issue) | | i UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY PROJECT REPORT Colombia Investigations (IR)...ADJOINING AREA, j- ; % -:. :'..-' ":. .DEPARTMENT OF CUNDINAMARCA, COLOMBIA - ; _ r .' Donald H. MeLaughlin...(k^vernment of^ Colombia, and the, ,^~ Agency for International Development, ,O U."S» "Department-of State ... UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY PROJECT REPORT Colombia Investigations (IR)...ZIPAQUIRA QUADRANGLE AND ADJOINING AREA, DEPARTMENT OF CUDINAMARCA, COLOMBIA by Donald H. McLaughlin I. S. Geological |  | | Book | | CHEMICAL AND PHYSICAL PROPERTIES 90 Emerald Lore in Colombia and Peru, 5. 93 Crystal Structure Chemical...Proportions, Chile, 407 335 Polishing 359 361 Colombia, Laps and Agents, 336 407 Czechoslovakia, 13...by the noted were emerald made from green Department of Antiquities more extremely certain that... worked to were satisfy a the gems from Colombia only known source gained of emeralds. vigorous...north of Thebes. No emeralds exist the emerald mine through stones. Qift as as other mineral, |  | | 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 ...of emeralds____________________^______________ Chivor mines.__________________----_--_--------_------------Gold...mine________________________________-_______ Guayaquil mine ___________________________________________ Cau...ILLUSTRATIONS Page PLATE 5. Index map of part of Colombia, South America _______ In pocket 6. Map showing |  | | 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...the emerald gastropods extracted from the Matecaña mine in GachalĂ (Vuillet et al., 2002) and the famous...time to the genetic model of Colombian emeralds. Colombia offers a unique case because other gem trapiches |  | | Journal (article/letter/editorial) | | Photographs January/February: Gold and quartz, Eagle's est mine, Placer County, California. Tana Daugharthy specimen...JeffScovil photo. May/June: Emerald with apatite, Chivor, Colombia. Melvin S. Hindin specimen, Harold and Erica...Papers in Specimen Mineralogy Acanthite, SilverKing Mine, Park City, Utah, R. B. Cook. 112-16 Afghanite...Q. Wight, 13S China, quartz. 118-23; Yaogangxian mine, 258 Chips from the Quarry, M. E. Huizing, 5, 85-87...New Find of Large Paramelaconite Crystals,A1gomah Mine, Ontonagon County, Michigan, S. M. Carlson, M. J |  | | Journal (issue) | | emeralds ; also brassy yellow pyrite crystals in both Chivor emerald (Plate B, 7) and fluorite (Plate B, 8)...Well-developed crystals of pyrite in emerald from Chivor {Colombia). 8. Euhedral pyrite in fluorspar. 9. Well-defined...1). O n e of its scarce occurrences being Muzo, Colombia, its presence in emerald may well be considered...Slender prisms of parisite in emerald from Muzo {Colombia). 2. Idiomorphous prisms of apatite in mauve spinel...and the area of circulating waters. Thus, like limonite, it shows an affinity for the oxydisation zones |  | | Catalog/List | | label40x30x25mn. U6. 4. 5. ~u,_,. Panasqueira Mine, Beira-Beixa, Portugalxl without matrix. 65x45x20mm...60x40x3Cmn. f.12. .u.._ xls æ ~- CALCIT! ~'"'€vor Mine,. St Just, Cornwall. Three transluænt tel'ldnated...si das. U. 80x30x28nm. t2L1. CAI.CITE. Geevor Mine, St Just, xls to lOmn intergrown 50x45x3Cmn. t12...shape with a little chlorite. CALCITE.Cambokeels Mine, Co Durharn, Wcardale. 13. about ,half covered...hexagonal xls of calcite to CASSITERITE. Polberro Mine, St Agn2s, Cornwall. A 70.xSOnm arca of h2matite |  | | Journal (article/letter/editorial) | | February 1974. A field trip was to near Clemson for limonite and tourmaline. The Wateree Valley Rock and Mineral...So ciety enjoyed a productive trip to the Mica Mine Farm. Mrs. George Bruce, a geologist and former...Joe Tenhagen told of his trip to the Cosquez and Chivor Emerald Mines in Co lombia in S. A The Central...workshop leaders, Wyn and Don Guthrie, Chemistry Department, spoke to the Club asks participants to bring...ulations Prof. Robert Darling of the Geology Department of East Ten DELAWARE nessee State University |  | | Journal (issue) | | material known as " M a x i x e Beryl" from the Maxixe Mine (Minas GĂ©rais, Brazil). This particular specimen...claimed it as a new mineral in 1933. T h e Maxixe Mine was then a recent discovery. T h e figures regarding...Recently, because of statements by scientists and mine-owners, we are wording our reports in a m a n n...Beryl mine also told me that no one (presumably in Brazil) knew the whereabouts of the Maxixe Mine. Following...INTRODUCTION About 1917 blue beryl was found in the Maxixe mine in Minas Gerais, Brazil, which h a d the following |  | | Catalog/List | | Ward Minera! on QUARTZ RHODOCHROSITE District Mine. Climax Climax olTolg-Yole Lake. County. ncredibly...years to find a specimen rhombs rhombs Climax Mine, ot rhodochrosite $50 OOU 60.000 Ex The ... 8 nn ae from the \ slight ¢ « nax 1g Mine : The Kevin Ward Mineral Exceptional German...silver was found in the late 1970s at the Dukat Mine measures which is mainly known by 6 cm Ex: Helmut... initely a unique opportunity. From the Dukat Mine, Dukat Gold-Silver Ore Field, Magadan Oblast’, East |  | | Book | | lower than the temperature required to form the host mine ral. I n this instance it would only he when the...ďż˝lontana deposits. 13.5 CHAPTER XII E M E RALD COLOMBIA, BRAZIL, RUSSIA, INDIA, AND SOUTH AFRICA (0f...present, these are the Muzo and El Chivor localities in Colombia; Brazil; Si beria (Tokowaya, 50 miles... which designates a stone as having come from Colombia, is the cubic crystal shape of the included forÂ...between the local peculiarities of the typical El Chivor emeralds and l-'38 E J'\ l EllALD those from |
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