 | 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...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...the conversion of Fe2+ in silicates to Fe3+ in magnetite during serpentinization, leads to the production |  | | 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...China The Dyakou emerald occurrence is in Yunnan Province in southern China. The occurrence is hosted by |  | 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...from chromite and V is sourced from V-bearing magnetite or coulsonite (Fe2+ V3+ 2 O4 ). Nevertheless,...lizardite veins (V1) and olivine (Ol). Fine-grained magnetite (Mag) is present in the centre of V1; V2 boundaries...Types IIB and IIC Canada (Tsa da Gliza, Taylor 2) Bulgaria (Rila) Urals (Malysheva, etc.) Pakistan (Khaltaro) |  | | 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... aquamarine Brazil 42 Magnetite Crystals Lonedo, Italy 34 Magnetite In Brazil 40 Mica Plates...Colombia calcite, quartz, calc- scheelite, magnetite, fluorite, garnet Some Fe. Na; rarely some |  | | Journal (issue) | | magmatic and metamorphic origins. Within a single gem province in Australia, variations in color observed for...pyrochlore, fersmite, samarskite, hercynite, magnetite, zircon, and iron oxides. “Metamorphic” corundum...basalt deposits in Madagascar. In Antsiranana Province, the paleoplacer is composed of a carbonate-karst...000 to 4,000 ppmw) talc-chlorite ± actinolite ± magnetite metabasic rocks of the Muva Supergroup, which...Bonfim, Pirenópolis Canada: Tsa da Gliza, Taylor 2 Bulgaria: Rila Urals (e.g., malysheva) Norway: eidsvoll |  | | 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 |
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