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Microlite Group from
Varuträsk, Skellefteå, Västerbotten, Sweden

Description
Comments:	subhedral crystals up to 20 mm. chemistry appr. (Ca,Na)2(Ta,Nb)2O6(OH,F). Also as metasomatic product, replacing columbite-tantalite. Metasomatic microlite has A-site deficiencies and low F in contrast to primary microlite.
Quality of samples:	not specified / average specimens
Rarity at site:	Rare
Confirmation
Validity:	Believed Valid
References
References:	Cerny et al. (2004) Can. Min. 89, 505-518; Mineralogical Magazine 1963 33 : 458-466
Data
Mineral Data:	Click here to view Microlite Group data
Locality Data:	Click here to view Varuträsk, Skellefteå, Västerbotten, Sweden

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