5665 Mongolite, Dorozhnyi pegmatite, Khan Bogdo Massif, Mongolia
Particles of HOLOTYPE material of Mongolite – extremely rare niobo-silicate known only in two localities worldwide. Sample comes from ex-collection of Dr. E.I. Semenov (Semenovite-(Ce)) obtained by him from the author of the mineral Dr. M.D. Dorfman (Dorfmanite). According to personal communication (2012) of the coauthor of the mineral Dr....