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Siderite Quartz Ferroceladonite & Gaidonnayite

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CFL866562

Siderite Quartz Ferroceladonite & Gaidonnayite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.8 × 3 cm
Description

Nice specimen of siderite crystals pseudomorph/epimorph after aegirine, associated with smokey quartz, a green mineral possibly ferroceladonite, and type locality fluorescent gaidonnayite.  Collected by Gilles Haineault.

Mineral Data
What's on the rock

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Ferroceladonite

Formula: 
K(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2
Strunz: 
9.EC.15
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Type Locality: 
Hokonui Hills, South Island, New Zealand

Gaidonnayite

Formula: 
Na2Zr(Si3O9)·2H2O
Strunz: 
9.DM.15
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 0.0
Streak: 
White
Type Locality: 
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

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