 | Dekov, V. M., Arnaudov, V., Munnik, F., Boycheva, T. B., Fiore, S. (2009) Native aluminum: Does it exist?. American Mineralogist, 94 (8) 1283-1286 doi:10.2138/am.2009.3236 | Journal (article/letter/editorial) | | of Sofia, 1000 Sofia, Bulgaria 2 Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria...specimen with phlogopite and emerald in a pegmatite vein in the Rila Mountain (Bulgaria). This contribution addresses...apatite, Be-bearing margarite, beryl, chrysoberyl, emerald, native Bi, NbTa oxides, and garnet (Fig. 1c; Arnaudov...the metallic flake. FiGure 1. (a) Inset: map of Bulgaria with the location of the study area in the Rila...amphibole-phlogopite zone; 12 = phlogopite zone; 13 = beryl and emerald occurrences; 14 = plagioclase zone; 15 = alluvial |  | | Journal (article/letter/editorial) | | 1529-1541 (2006) THE EMERALD- AND SPODUMENE-BEARING QUARTZ VEINS OF THE RIST EMERALD MINE, HIDDENITE, NORTH...the paragenesis and mineral compositions of the emerald occurrence at the Rist mine, Hiddenite, North Carolina...and to examine the possible relationship between emerald and spodumene mineralization and granitic pegmatites...are calcite, amethystine quartz, spodumene and emerald. The early stage of vein development is characterized...with granitic pegmatite was observed. Keywords: emerald, chromian spodumene, hydrothermal quartz vein, |  | | Journal (article/letter/editorial) | | i e r. c o m / l o c a t e / o r e g e o r ev Emerald deposits and occurrences: A review L.A. Groat a...Available online 22 April 2008 Keywords: Emerald deposits Emerald occurrences Crystal chemistry Geochemistry...isotopes Classification Exploration A B S T R A C T Emerald, the green gem variety of beryl, is the third most...emeralds. However there is speculation that the emerald mines in Colombia are becoming depleted. Brazil...world emerald production. Emeralds have also been mined in Afghanistan, Australia, Austria, Bulgaria, China |  | Groat, L. A., Marshall, D. D., Giuliani, G., Murphy, D. C., Piercey, S. J., Jambor, J. L., Mortensen, J. K., Ercit, T. S., Gault, R. A., Mattey, D. P., Schwarz, D., Maluski, H., Wise, M. A., Wengzynowski, W., Eaton, D. W. (2002) MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON. The Canadian Mineralogist, 40 (5) 1313-1338 doi:10.2113/gscanmin.40.5.1313 | Journal (article/letter/editorial) | | MINERALOGICAL AND GEOCHEMICAL STUDY OF THE REGAL RIDGE EMERALD SHOWING, SOUTHEASTERN YUKON LEE A. GROAT§ Department...authors (WW) discovered a major occurrence of emerald in the Finlayson Lake district of southeastern...contact with a mid-Cretaceous granitic pluton. The emerald crystals occur where quartz veins cut mica-rich...chromophore. Fluid-inclusion data indicate that the emerald precipitated from a fluid whose maximum salinity...equivalent. The oxygen isotopic composition of the emerald is highly variable (12.3 to 14.8‰), but there is |  | Marshall, D. D., Groat, L. A., Falck, H., Giuliani, G., Neufeld, H. (2004) THE LENED EMERALD PROSPECT, NORTHWEST TERRITORIES, CANADA: INSIGHTS FROM FLUID INCLUSIONS AND STABLE ISOTOPES, WITH IMPLICATONS FOR NORTHERN CORDILLERAN EMERALD. The Canadian Mineralogist, 42 (5) 1523-1539 doi:10.2113/gscanmin.42.5.1523 | Journal (article/letter/editorial) | | Mineralogist Vol. 42, pp. 1523-1539 (2004) THE LENED EMERALD PROSPECT, NORTHWEST TERRITORIES, CANADA: INSIGHTS...ISOTOPES, WITH IMPLICATONS FOR NORTHERN CORDILLERAN EMERALD DANIEL D. MARSHALL§ Department of Earth Sciences...Columbia V6T 1Z4, Canada ABSTRACT Vanadium-rich emerald at the Lened occurrence, Northwest Territories...within a fractured garnet–diopside skarn. The emerald is generally found in quartz–carbonate veins with...distinct fluids, a CO2-bearing fluid related to emerald precipitation and a brine limited to subsequent |  | 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) | | minerals Review Emerald Deposits: A Review and Enhanced Classification Gaston Giuliani 1, *, Lee A....February 2019 Abstract: Although emerald deposits are relatively rare, they can be formed...systems and models currently used to describe emerald precipitation and predict its occurrence are too...mode of formation for some emerald deposits. Generally speaking, emerald is beryl with sufficient concentrations...crystals. The limiting factor in the formation of emerald is geological conditions resulting in an environment |  | | Book | | EMERALD and OTHER BERYLS by JOHN SINKANKAS This is Beryls jewelers, gists, geologists, earth ...sciences, yet eminently facet and widely a Emerald historians, gemological Sinkankas, the permanent...metal beryllium. with Beginning author traces emerald—from its less ite, role of history’s pendix...Unmatched third is knowledge from author one emerald cutting and of exotic composition, physical...mineralogical once events. languages for beryl emerald logical to and part, Sinkankas explores and |  | | Journal (issue) | | FEATURE ARTICLES 464 Geology of Corundum and Emerald Gem Deposits: A Review Gaston Giuliani and Lee...of the geology and genesis of gem corundum and emerald deposits. p. 569 512 A Review of Analytical... 637 614 Geographic Origin Determination of Emerald Sudarat Saeseaw, Nathan D. Renfro, Aaron C. Palke...from sources old and new: A 2.50 ct Colombian emerald ring, courtesy of Ronald Ringsrud; a 7.04 ct Madagascar...PM FEATURE ARTICLES GEOLOGY OF CORUNDUM AND EMERALD GEM DEPOSITS: A REVIEW Gaston Giuliani and lee |  | | Book | | Marshall, Anthony E. Fallick and Yannick Branquet Emerald Deposits: A Review and Enhanced Classification Reprinted...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...pegmatite situated in the Borborema Pegmatitic Province (BPP) from Rio Grande do Norte in Northeast Brazil...review proposed an enhanced classification for emerald deposits based on the geological environment (magmatic |
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Urdini Lakes, Samokov Municipality, Sofia Province, Bulgaria