Mud volcano on the same name island (4x5 km size) in the Baku archipelago some km SE of Baku city.
Main volcanic activity episodes were observed in 1857, 1859, 1940, 1947, 1959, 1960 and 1963. The strongest eruptions occurred in 1857 and 1940, when volumes of erupted breccias attained some millions of cubic meters and flame pillars were up to a kilometer high.
The most interesting mineralization (native metals, akdalaite) is connected with ejecta of 1947 eruption.
Refs.:
- Novgorodova M.I., Mamedov Yu.G. (1996) Native aluminium from mud volcano of Bulla island (Caspian sea). - Litologiya i poleznye iskopaemye, N4, 339-349 (in Russ.)
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http://www.maik.rssi.ru/cgi-bin/search.pl?type=abstract&name=litmin&number=4&year=96&page=30124 entries listed. 23 valid minerals.
