tveitite

certainty of origin : Donated directly by the Author.

author(s) : Bergstol, Jensen and Neumann

date of publication : 1977

source : Lithos (10) p.81

formula : Ca1-x(Yt,Ln)x F2+x

comments about the origin : Musee d'Oslo 1980

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This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.

(C) BRGM, ENSMP

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