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Urdini Lakes, Rila Mtn (Rila Planina), Bulgaria
Emerald occurrence, associated with a desilicified pegmatite vein that follows the contact between biotite gneiss and talc schist. Emeralds are concentrated in plagioclase-rich parts of the pegmatite and in contacts with phlogopite-rich zones.
The occurrence is situated in the area of Urdini lakes in Rila Mts (mountain range in southwestern Bulgaria and the highest mountain range of Bulgaria and the Balkans, with its highest peak being Musala at 2,925 m).
NOTE: This locality is in a National Park and collecting is forbidden.
Mineral List
20 entries listed. 13 valid minerals.
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References
I. Kostov, V. Breskovska, J. Mincheva-Stefanova, G. Kirov (1964): Minerals of Bulgaria. Sofia, Bulgaria, 540 pp. (in Bulgarian).
Groat, L.A., Giuliani, G., Marshall, D.D., and Turner, D. (2008): Emerald deposits and occurrences: A review. Ore Geology Reviews 34, 87-112.
Groat, L.A., Giuliani, G., Marshall, D.D., and Turner, D. (2008): Emerald deposits and occurrences: A review. Ore Geology Reviews 34, 87-112.
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