 | 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...emerald in a pegmatite vein in the Rila Mountain (Bulgaria). This contribution addresses the composition...plagioclase, phlogopite, Cr-bearing muscovite, apatite, Be-bearing margarite, beryl, chrysoberyl, emerald...the metallic flake. FiGure 1. (a) Inset: map of Bulgaria with the location of the study area in the Rila...= alluvial deposits; 16 = Al0 occurrence; 17 = lakes. resuLts The metallic flake is quite large (~2 |  | | Journal (article/letter/editorial) | | wide contains rare magnesian schorl, garnet and apatite, zircon, and trace sulfides. Plagioclase–ferrosilite...encountered, and no emerald has been observed. Apatite is extremely rare and thus far found only in one...(Ta), ScTiO5 (Sc), and SnO2 (Sn), gahnite (Zn), apatite (P, F), synthetic glasses (Cr, V, Pb, Th), zircon...pegmatite from the Urdini Lakes, Rila Mountains. Annuaire de l’Université de Sofia, Faculté de Géologie |  | | Journal (article/letter/editorial) | | been mined in Afghanistan, Australia, Austria, Bulgaria, China, India, Madagascar, Namibia, Nigeria, Pakistan...Terezinha (Gavrilenko et al., 2006). 30. Bulgaria, Urdini Lakes, Rila Mountains (Petrusenko et al., 1966)...1966). Includes 0.002 wt.% Rb2O. 31. Bulgaria, Rila (Alexandrov et al., 2001). Average of 10 analyses....Terezinha parental fluids. 5.5. Bulgaria The Rila emerald occurrence in SW Bulgaria is associated with a desilicified...in a matrix of plagioclase, quartz, phlogopite, apatite, and tourmaline crystals (Garland, 2004). Whole-rock |  | 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) | | younger volcano-sedimentary series or ophiolites in Bulgaria, Canada, China, India, Pakistan, Russia, and Spain...42. Urals (Malyshevo). Ukraine: 43. Wolodarsk. Bulgaria: 44. Rila. Austria: 45. Habachtal. Norway: 46...Types IIB and IIC Canada (Tsa da Gliza, Taylor 2) Bulgaria (Rila) Urals (Malysheva, etc.) Pakistan (Khaltaro)...an albite-rich plagioclasite. Emerald (Em) and apatite (Ap) precipitates in the rocks affected by the...Coarse-grained F-phlogopite + apatite + emerald + quartz; Fine-grained F-phlogopite + apatite + emerald; F-phlogopite |  | | Book | | Proportions Brazil, 378 Angles of Faceted Bulgaria, 399 333 Burma, 400 from Recommended Canada...Laet’s issued an work remarks on more the Province and the Laet, illustration Some information...discussed below. The are Cape St. Helena in the Province of 1783 contained time several However, confusion...muscovite. Machatschki Pisek left bertrandite, and apatite, 61 noted were cavities hexagonal in while...albite, “hollow” crystals region Mathur et apatite. In one are common faces but crystal include |  | | 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...pegmatite situated in the Borborema Pegmatitic Province (BPP) from Rio Grande do Norte in Northeast Brazil...alluvial sapphires from the Orosmayo region (Jujuy Province, NW Argentina) and importantly shows that there...zircon xenocrysts from alkali basalts in Ratanakiri Province (Cambodia) suggest that their genesis involved |  | | Journal (issue) | | magmatic and metamorphic origins. Within a single gem province in Australia, variations in color observed for...pargasite ± plagioclase ± corundum ± spinel ± apatite. Metamorphic conditions estimated from the gar...basalt deposits in Madagascar. In Antsiranana Province, the paleoplacer is composed of a carbonate-karst...Bonfim, Pirenópolis Canada: Tsa da Gliza, Taylor 2 Bulgaria: Rila Urals (e.g., malysheva) Norway: eidsvoll...into an albite-rich plagioclasite. Emerald and apatite can precipitate in the pegmatite, aplite, plagioclasite |
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