A 10 mm tall size, yellowish colored crystal of niocalite, a rare silicate of niobium, is in good evidence over the matrix, with some others minor and black perovskite in association..Ex Francesco Bedognè coll. #2168
Formula :
Ca7Nb[O3/F/(Si2O7)2]
System: monoclinic Hardness:6 Rarity:very rare
Strunz id:VIII/C.11-40 -
SILICATES
Name origin: -
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 Specimen weight:30 gr.
 Crystal size:Up to 10 mm
 Overall size: 48mm x 32 mm x 15 mm
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