Haleniusite-(La) Mineral Data

General Haleniusite-(La) Information
Chemical Formula:	(La,Ce)OF
Composition:	Molecular Weight = 174.90 gm
	Lanthanum 36.53 % La 42.84 % La₂O₃
	Cerium 35.25 % Ce 41.29 % Ce₂O₃
	Praeseodymium 1.61 % Pr 1.89 % Pr₂O₃
	Neodymium 6.60 % Nd 7.70 % Nd₂O₃
	Oxygen 9.15 % O
	Fluorine 10.86 % F 10.86 % F
	- % F -4.57 % -O=F₂
	______ ______
	100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:	La_0.46Ce_0.44Nd_0.08Pr_0.02OF
Environment:	Coarsely crystalline bastn�site-(La), now largely replaced by h�leniusite-(La),
IMA Status:	Approved IMA 2004 (Dana # Added)
Locality:	Mine dumps of Bastn�s deposit, Skinnskatteberg District, V�stmanland County, Sweden. Link to MinDat.org Location Data.
Name Origin:	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.
Synonym:	IMA2003-028