Federation, Krasnyi pr. 67, Novosibirsk, 630091 Russia b Sobolev Institute of Geology and Mineralogy,... pr. Akademika Koptyuga 3, Novosibirsk, 630090 Russia Received April 1, 2009 Abstract—The first data...source of hydrothermal metasomatic ore. The elevated Mn content in magmatic melts of the Early Devonian ...by assimilation of Riphean and Lower Cambrian high-Mn carbonate sequences in crustal magma chambers. In...actinolite, piemontite, and okhotskite, a Mn-pumpellyite identified in Russia for the first time and studied in |