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ATHENA

MINERALOGY

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Mineral: TRIMOUNSITE-(Y)
Formula: (Y,Dy,Er,Yb,Gd,Ho,Tb,Sm)2Ti2SiO9
Crystal System: Monoclinic
IMA Number: 1989-042
References: EJM 2 (1990), 725; HB2/2 (1995); NM 90-94 (1997)
Type Locality: Trimouns talc deposit, Luzenac, Ariège, France

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