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0 item @ $0.00  

Fersmanite

#PD33613

Fersmanite

#PD33613
Availability
Sold
Size
4 x 7 x 3 cm - Sm Cabinet 
Formula
Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3 (RRUFF)
Locality
Khibiny Massif, Kola Peninsula, Russia

Glassy golden-brown euhedral Fersmanite crystals to 7mm embedded in matrix along the contact of what looks like a fine grained Schist, but is actaully compact dark green Aegirine, and alkalic rock.

Type Locality

Fersmanite

Formula
Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3 
Crystal System
Monoclinic 
Crystal Habit
Pseudo Tetragonal 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
golden yellow, resin brown, light brown, dark brown 
Streak
brownish white 
Class
Monoclinic - Prismatic 
Fracture
Uneven 
Hardness
5.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
Special Info
Type Locality

Other Sold

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