 | | Journal (article/letter/editorial) | | COOK Department of Geosciences Auburn University Auburn, Alabama 36849 cookrob@auburn.edu Euclase La...La Marina Mine, Municipio de Pauna Boyacá, Colombia E uclase is a species whose beauty and rarity make...minerals after beryl and chrysoberyl. Exceptional euclase specimens appeared at the 2016 Tucson Gem and Mineral...selection of this issue’s Connoisseur’s Choice. Euclase, BeAlSiO4(OH), is a chemically simple nesosilicate...Lacking essential chromophores in its formula, euclase is ideally colorless with a white streak, but in |  | | 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...late 20th century, when the Gachalá, Peñas Blancas, La Pita and other deposits were first worked, these...of emerald. In recent times, major specimens of euclase, parisite-(Ce), quartz, pyrite and dolomite have |  | | Journal (issue) | | (a variety of zoisite), 9 cm, from the Merelani mine, located on the slopes of the Lelatema Mountains...Rubaya, North Kivu Province, Democratic Republic of Congo Back cover: Top left: Euclase, 2.2 cm, from the...the La Marina mine, Colombia. Top right: Topaz, 8.4 cm, from Ouro Preto, Minas Gerais, Brazil. Lower left:...left: Phosphophyllite, 2 cm, from the Unificada mine, Potosi, Bolivia. Bottom right: Grossular, 3.5 cm...Fluorapatite on elbaite, 5.5 cm, from the Alto da Cabeca mine, Parelhas, Rio Grande do Norte, Brazil. Will Johnson |  | | Report (issue) | | Tyson-originating examples from, oh, St.-Hilaire and the Jeffrey mine in Quebec; Ontario’s Flamboro quarry and Liscombe...called the “Cobalt Lode mine” (the Quebul specimen is attributed to the “Castle mine”). Stilbite and Chabazite...Safflorite coating silver, 5.2 cm, from the Castle mine, Gowganda area, Timiskaming District, Ontario, Canada...Pau, 50 km north of the Spanish border in the Department of Pyrénées-Atlantiques, France. Even in the...(also rendered “Chah Kharboze”) mine, Anarak district, Esfahan Province, Iran. The brilliantly red-orange |  | | 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) | | Sakura Ishi and Rainbow Garnets JOHN RAKOVAN Department of Geology Miami University Oxford, Ohio 45056...Sokichi Ko, a professor of economic geology in the Department of Mining at Kyushu University from 1911 to 1929...arsenopyrite and quartz (Ko #1508) from the Obira mine, Oita Prefecture. It is a huge matrix piece, measuring...from the Obira mine; chalcopyrites from the Ani mine, Akita Prefecture, and the Ashio mine, Tochigi Prefecture;...matrix specimens of fluorapatite from the Ashio mine, Tochigi Prefecture. Of the several collections |  | Pignatelli, Isabella, Giuliani, Gaston, Morlot, Christophe, Rouer, Olivier, Claiser, Nicolas, Chatagnier, Pierre-Yves, Goubert, David (2017) Recent Advances In Understanding the Similarities and Differences of Colombian Euclases. The Canadian Mineralogist, 55 (4) 799-820 doi:10.3749/canmin.1700011 | Journal (article/letter/editorial) | | Grand Pont, Lausanne, Suisse ABSTRACT Colombian euclase is rare and associated with emerald in medium-temperature...Cretaceous black shales (BS). The original sources of euclase production were the mining districts of Gachalá...2016 euclases were also found at the La Marina mine in the western emerald belt. The present study is centered...and mineralogical examination of zoned Colombian euclase sold on the gem market as ‘‘trapiche’’. Its texture...liquid, and vapor phases are also observed in the euclase, and their volume is identical to that of the inclusions |  | | 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...late 20th century, when the Gachala, Penas Blancas, La Pita and other deposits were first worked, these |  | | Journal (issue) | | the Unificada mine, Potosi, Bolivia. Top right: Benitoite, 2 cm, from the Benitoite Gem mine, California...N‘Chwaning I mine, Kuruman, South Africa. Bottom right: Mimetite, 2.7 cm, from the Tsumeb mine, Namibia....Record: (1) Stephanite, Husky mine, Canada. (2) Wulfenite, Rowley mine, Arizona. (3) Diaspore twin, Pinarcik...Adelaide mine, Tasmania. (5) Andradite, Antetezambato, Madagascar. (6) Calcite, Mashamba West mine, Congo...Afghanistan. (8) Scorodite, Tsumeb mine, Namibia. (9) Shigaite, N’Chwaning II mine, South Africa. v This special |  | | Journal (issue) | | BARITE 13 cm, from Jebel Ouichane, Sagangane, Nador Province, Oriental Region, Morocco. Doug Fiske collection;...left: Euclase, 2.3 cm, from the Gachalá mine, Guavió-Guatéque mining district, Boyacá Department, Colombia...photo. Fluorite with quartz, 11 cm, from Fujian Province, China. Keith & Diane Brownlee collection; Joe...from Katlang, Mardan Dist., Khyber Pakhtunkhwa Province, Pakistan. Jeff Starr collection; Joe Budd photo...photo. Tanzanite, 7.6 cm, from the Merelani mine near Arusha, Tanzania. Barry & Beth Kitt collection; James |  | | Journal (issue) | | cover Vanadinite 3.4 cm, from the North Geronimo mine, La Paz County, Arizona. Dick Morris collection; Jeff...Mineralogy newsletter. After joining the Geoscience Department at the University of Arizona I was surprised...custom jewelry. Wulfenite, 5.4 cm, from the Defiance mine near Gleeson, Cochise County, Arizona. Ken Donn...photo. Wulfenite (hot-pink), 3.7 cm, from the Glove mine, Tyndall district, Santa Cruz County, Arizona. Collected...pseudomorph after azurite, 4 cm, from the Inspiration mine, Globe-Miami district, Gila County, Arizona. Ken |  | | Journal (article/letter/editorial) | | southwood@bigpond.com Reinerite Tsumeb, Namibia T he Tsumeb mine in northern Namibia is renowned for its wide assortment...what is known as the first oxidation zone. As the mine workings deepened in the late 1920s and 1930s the...gem-quality 6.7-cm reinerite crystal from the Tsumeb mine” in the collection of Desmond Sacco (Johannesburg)...Reinerit, Zn3(AsO3)2, ein neues Mineral der Tsumeb Mine Südwestafrika. Neues Jahrbuch für Mineralogie, Monatshefte...Birmingham] at 02:01 26 June 2016 Euclase, La Marina Mine, Colombia, 8 cm Photo: Malte Sickinger MARCUS |  | | Journal (article/letter/editorial) | | GEMSTONES OPALS, B R I L L I A N T COLORS—Direct f r o m mine, 15 for $ 5 . 0 0 . 10 ringsize cabochons (opal...0 D . W . T . Money orders only. Better price on mine run unsorted gold in q u a n tities. Snowshoe Trout...Permission t o w o r k or prospect your claim or mine on percentage basis. Have equipment. Fantasia, P...sapphire, ruby, zircon, chrysoberyl, brazilianite, euclase, sphalerite, periclase, cassiterite, danburite...tourmaline, danburite, brazilianite, enstatite, euclase, and many others. FOR T H E GEM CUTTER A K D FACETER |  | | Journal (issue) | | says University of Arizona Mining Engineering department chairman Mary Poulton. “There are three times...in the pools that formed. The Star of the Congo mine near Lubumbashi, in particular, (famous among mineralogists...rosette of deep yellow shabaite from the Kamoto East mine. This beautiful matrix specimen was pictured in...locality, the mineralogically complex Kipushi mine. He wrote “La collection des . . . chantillons minéralogiques...Katanga minerals. Joseph also wrote “The Mashamba West mine, Shaba, Zaire” (with coauthors G. Gauthier and V |  | 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 |  | | Report (issue) | | Werner's apatite samples originated in the tin mine in the town ofEhrenfriedersdorfin the Erzgebirge...Mimetite; San Francisco Mine, Magdalena, Sonora, Mexico Pyromorphite; Les Farges Mine, Correze, France Fluorapatite...Fluorapatite, 3 cm tall; Golconda Mine, Minas Gerais, Brazil Fluorapatite in Calcite; Liscombe Property...Minerals specimens (ex Wendy and Frank Melanson) Jesse La Plante photo A B accommodates the inclusionof...Fi(OH)5 Belovite-(Ce) • NaCeSri (PO4)3 F Belovite-(La) • NaLaSri (PO4 )3 F Kuannersuite-(Ce) • NaCeBai |  | | Journal (issue) | | COVER: EUCLASE with Albite, 11.2 cm, from the La Marina mine, Muzo District, Boyaca Department, Colombia...Fort Victor ia, SonthArn Rhorl,,st'l. Bogota, Colombia. LAWRENCE H. CONKLIN 2 WEST 46th STREET , NEW...ROOMJ53 BARITE 20.3 CM XIEFANG MINE , GANZHOU PREFECTURE , JIANGXI PROVINCE , CHINA TOM SPANN PHOTO ■ ...Comenius University, Faculty of Natural Sciences Department of Mineralogy and Petrology Ilkovifova 6, 842...1751 was funded mainly by donations from wealthy mine owners and from simple mining families. Modem times |  | | 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 |  | | Book (edition) | | scales or was persuaded that he had found a silver mine, and spangles, ruined himself in attempts to obtain...experiment, however, with polarized light, will deter- mine the Light by point. may be polarized by several...we have chroamong the and, the most active or mine- silicates of the earths, alkalies, and metals...would be encroaching too much on tible the province of Chemistry ; or, at least, would be incompa-...constituent into rals), of the so-called earthy mine- only in very thin beds called veins , which traverse |  | | Journal (issue) | | NO. 4 • APRIL 2021 10 ARIZONA’S PERIDOT MESA GEM MINE A Green Gem Born in Volcanic Lava By Bob Jones ...Northwest Steve Schultz Mine Owners * Specializes in and mines Lava Cap Thunderegg, Mine Shaft Thunderegg,...silverstreams.com T&J Rocks Plus Tom & Jessa Pearson Mine Owners *Specializes in Pink Lady Plume Agate and...Arkenstone Gallery of Fine Minerals, Royal Peacock Opal Mine, Kingsley North, Joseph Stachura, Best In Gems,...yourself a little time to search. The Unificada Mine in Bolivia was the place where a striking specimen |  | | Book (edition) | | Phenacite, Nordenskiöld, 21. Diaspore, Haüy, 22. Euclase, 23. Beryl, 24. Chrysoberyl, Werner, 25. Topaz...of natural history, that general science, whose province it is to discriminate all the va es of matter...kinds of information relating to minerals. Its province as a science has already been assigned in the...minerals. Their investigation constitutes the department of crystallography. 6 CRYSTAL LOGRAPHY. SECTION...Cryolite , Fluor , Gypsum , Common salt, Quartz, Euclase , Calcite , Arragonite , Strontianite, Boracite |  | | Book (edition) | | BY JAMES DWIGHT DANA , A. M. ASSISTANT IN THE DEPARTMENT OF CHEMISTRY , MINERALOGY , AND GEOLOGY, IN YALE...of ROBERT ALLAN . The recent copious “ System of Mine. ralogy and Geology ,” by Thomas Thomson, has also...describe the individual qualities of the several mine ral species, while Geology treats of them only as...angle edges rens above , t1 parts oi The law's , mine uni ex ! 1 il 11 ! O AIT T DODE CATTEDRANS...re es ; the lat the object of d variou Le several mine adividu associated in the reats of w pied only |  | | Book | | obscure without a due acquaintance with this department in the History of Nature. In preparing this...been his wish to treat of of some particular department. each portion with that fulness which its importance... ; A light is reflected. The word crystal in mine Faces, edges, angles, axes of Crystals. ralogy designates...complete change of colour takes place, as in the Western Isles, which, on exposure for a few hours, These...axinite, prelmite, boracite, tourmaline, cala- mine, topaz, titanite, calc-spar, beryl, barytes, fluor |  | | Book | | Davidsonite. Goshenite. sartine. Melinite. Euclase. Somervillite. Zurlite. Hydrotis Silicate of...(Kalium) K ' . . . . Potash La . . . . Lanthanium La . . . . Protoxide of Lan- Lime... H. 6. S.G. Alumina . Iu-i^olo, to Adulaire, La Metherie ; Adular, WerHaidinger; Adularia, Jameson...Paraguay, brought down from the interior by the Rio de la Plata, they are in such abundance as to be shipped...in concentric curvilinear bands. Agathe cornaltne, La Metherie. See A Carnelian. Agnesite: an earthy |  | | Book (edition) | | Mo 42 Tc y ·n,,....-n 88�9 5d 22 VA 57 La l...lnt/"IJt\u(TI 138� -Ii 00 IB IIB 27 Cu...44. c 1 3 .50 A. A natural occurrence at a coal mine in the (TL) Lvov-Volynsk basin, USSR. Achates. syn...near Laurion. Greece. See Agargite-(La). 20.4 . 1 4 Agardite-(La), (La,Ca)C�(AsO,h(OH)6.3H�O. Mixitc group...(TL) Kamariza. near Laurion. G reece. Named as the La analogue of agardite-(Y). 20.4. I 3 Agardite-(Y)...earth analogue of mixite. q. v.: see also Agardite-(La) and Goudcyitc. Hexagonal, a 1 3 .55. c 5.87 A. Z=2 |
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La Marina Mine, Pauna, Western Boyacá Province, Boyacá Department, Colombia