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Weloganite Dachiardite-Na Calcite Quartz & Siderite

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CFL909679

Weloganite Dachiardite-Na Calcite Quartz & Siderite

Type Locality

Description Tabs

Description
Locality: 
Francon Quarry, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4 × 3.5 cm
Description

Rich type locality specimen of weloganite crystals associated with dachiardite-Na (rich specimen), quartz and calcite and siderite.  Notice the fluorescence of this specimen.

Mineral Data
What's on the rock

Weloganite

Formula: 
Na2Sr3Zr(CO3)6·3H2O
Strunz: 
5.CC.05
Hardness: 
3.5
Streak: 
white
Type Locality: 
Francon quarry, Montréal, Québec, Canada

Dachiardite-Na

Formula: 
(Na2,Ca,K2)5Al10Si38O96·25H2O
Strunz: 
9.GD.40
Crystal System: 
Monoclinic
Hardness: 
4.0 - 4.5
Type Locality: 
La Palaccia (Auf der Schneid), Duron Valley, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Quartz

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

Siderite

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

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