Berylium mineralization within veins in khibiny massif

摘要

Beryllium mineralization is representedin Khibiny massif by barylite, beryllite, bromellite,chkalovite, epididymite, gadolinite-(Ce), leifite,leucofanite and tugtupite. These minerals occur inveins of two types:1)pegmatite and hydrothermal veinswithin alkaline rocks;2)metasomatic verinlets inxenolites placed within khibinites and foyaites. Thepaper displays description of some occurences ofberyllium minerals, their mineral assemblages,properties and chemical composition.