Coarsely crystalline bastn�site-(La), now largely replaced by h�leniusite-(La),
Approved IMA 2004 (Dana # Added)
Mine dumps of Bastn�s deposit, Skinnskatteberg District, V�stmanland County, Sweden. Link to MinDat.org Location Data.
Named for Ulf H�lenius (1951-), head of the Department of Mineralogy of the Swedish Museum of Natural History, for his contributions to the spectroscopy of minerals and the mineral sciences in general.