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Niocalite Perovskite & Magnetite

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CFL879992

Niocalite Perovskite & Magnetite

Type Locality

Description Tabs

Description
Locality: 
Bond Zone, Oka, Laurentides, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.5 × 0.5 cm
Description

Classic type locality specimen of niocalite crystals, some of which are pointed by an arrow, associated with black cubic perovskite and magnetite crystals in matrix.  Ex-Ecole Polytechnique (University of Montreal) specimen.

Mineral Data
What's on the rock

Niocalite

Formula: 
(Ca,Nb)4(Si2O7)(O,OH,F)2
Strunz: 
9.BE.17
Hardness: 
6.0
Type Locality: 
Bond zone (Quebec Columbium Ltd. and Columbium Mining Products properties), Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada

Perovskite

Formula: 
CaTiO3
Strunz: 
4.CC.30
Hardness: 
5.5
Type Locality: 
Akhmatovskaya Kop' (Achmatovsk Mine), Nazyamskie Mts, Zlatoust, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

Magnetite

Formula: 
Fe2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Black

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