 | | Journal (article/letter/editorial) | | Springer-Verlag 1990 Les gisements d'rmeraude de la Cordillrre Orientale de la Colombie: NouveHes donnres mrtallogrniques...Universidade de Brasilia, Instituto de Geocirncias, 70140 Brasilia, Brasil 2 Centre de Recherches P~trographiques...Colombiana de Minas, calle 32, n ~ 1307, Bogotfi, Colombia Abstract. Emerald deposits of Colombia are confined...stratabound mineralizations. Emerald occurs in calcite veins, veinlets, pockets and brecciated zones associated...discussed in the paper. solides micacres permet de les discriminer des 6meraudes associres aux schistes |  | | Journal (issue) | | Faizah Bhatti Robert Weldon Kevin Schumacher Juan Zanahuria Video Production Lynn Nguyen Image...Timothy Adams E. Alan Jobbins George R. Rossman San Diego, California Caterham, UK Pasadena, California...Johnson Kenneth Scarratt Chattanooga, Tennessee San Diego, California Bangkok, Thailand James E. Butler...mine, which sits on a small island on pristine Lac de Gras in Canada’s Northwest Territories. Replete with...most of that output coming from one area near Lac de Gras in the Northwest Territories. The discovery |  | | Journal (issue) | | Chronicles developments at the Chivor emerald mine in Colombia between 1880 and 1925, based on archival records...(760) 603-4502 gandg@gia.edu Production Staff Juan Zanahuria gia.edu/gems-gemology Robert Weldon...California Timothy Adams Dorrit Jacob Andy Shen San Diego, California Sydney, Australia Wuhan, China...Mary L. Johnson James E. Shigley Washington, DC San Diego, California Carlsbad, California Alan T....spectra, E⊥c and E||c (figure B-5, bottom row). A calcite dichroscope is simply an instrument that splits |
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