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....
Most Mineral Species
Albite Amethyst Analcime Anatase Anglesite Aragonite Arsenopyrite Azurite Barite Brochantite Calcite Cassiterite Cerussite Chabazite Chalcopyrite Copper Crocoite Cuprite Dolomite Fluorite Galena Goethite Gold Gypsum Hematite Hemimorphite Libethenite Magnetite Malachite Mimetite Natrolite Phillipsite Pyrite Pyromorphite Quartz Siderite Silver Smithsonite Smoky Quartz Sphalerite Stibnite Thomsonite Unidentified Species Wavellite Wulfenite