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Columbite-(Fe) & Franconite & Fluorophlogopite

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CFL809503

Columbite-(Fe) & Franconite & Fluorophlogopite

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 3.5 × 3 cm
Description

Rarely available specimen of columbite-Fe crystals associated with franconite, albite and gemmy colorless to green micaceous crystals which could be fluorophlogopite (or phlogopite).  Collected by Gilles Haineault in 2017.

Mineral Data
What's on the rock

Columbite-(Fe)

Formula: 
FeNb2O6
Strunz: 
4.DB.35
Hardness: 
6.0
Type Locality: 
Green's Well pegmatite (Green's Tank), Pilgangoora, Wallareenya Station, Port Hedland Shire, Western Australia, Australia...

Franconite

Formula: 
Na2Nb4O11·9H2O
Strunz: 
4.FM.15
Crystal System: 
Monoclinic
Hardness: 
4.0
Type Locality: 
Francon quarry, Montréal, Québec, Canada

Fluorophlogopite

Formula: 
KMg3(AlSi3O10)(F,OH)2
Strunz: 
9.EC.20
Hardness: 
2.0 - 3.0
Type Locality: 
Mt Calvario, Biancavilla, Etna Volcanic Complex, Catania Province, Sicily, Italy

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