Aluminocerite-(Ce), Chevkinite-(Ce)

Aluminocerite-(Ce) : (Ce,La,Ca)₉(Al,Fe³⁺)(SiO₄)₃[SiO₃(OH)]₄(OH)₃, Chevkinite-(Ce) : (Ce,La,Ca,Th)₄(Fe²⁺,Mg)(Fe²⁺,Ti,Fe³⁺)₂(Ti,Fe³⁺)₂[O₄|Si₂O₇]₂

Locality: Tsakhirin Khuduk Y-Zr-Nb deposit, Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia

Pink triangular tabular crystals of aluminocerite (IMA2007-060) into cavities of black niobian chevkinite large crystal. FOV ~4x3 mm. Selfcollected in the trench #2 of Western ore zone of the deposit in July 1990. Pavel M. Kartashov collection and photo.

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Aluminocerite-(Ce), Chevkinite-(Ce)

Aluminocerite-(Ce) : (Ce,La,Ca)9(Al,Fe3+)(SiO4)3[SiO3(OH)]4(OH)3, Chevkinite-(Ce) : (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2[O4|Si2O7]2

Aluminocerite-(Ce) : (Ce,La,Ca)₉(Al,Fe³⁺)(SiO₄)₃[SiO₃(OH)]₄(OH)₃, Chevkinite-(Ce) : (Ce,La,Ca,Th)₄(Fe²⁺,Mg)(Fe²⁺,Ti,Fe³⁺)₂(Ti,Fe³⁺)₂[O₄|Si₂O₇]₂