Britholite

Formula: (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) Mohs scale hardness: 5.5Specific gravity: 4.2 - 4.7 g/cm³Rare earth elements: La, Ce, Pr, Nd, Y^{Rare earth content, %:}^REOmax^{= %}Other constituents, %: TiO2; ThO2, UO2 ^{Mineralklasse:}^Silicate^{(Germanates)U}^ses:

References

https://en.wikipedia.org
http://webmineral.com/data/Britholite-(Ce).shtml#.V6IzS6I8vYg
http://www.handbookofmineralogy.org/pdfs/britholite-(Ce).pdf
http://www.mindat.org/min-775.html

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