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Ancylite & Hilairite

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SYM569866

Ancylite & Hilairite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2 × 2.5 cm
Description

Blanket of dark brown cystals of hilarite with hundreds of interesting white double terminated crystals of ancylite (group). This specimen has been analyzed by eds. It is the only specimen I have of this quality available for sale. 

Mineral Data
What's on the rock

Ancylite

Synonym Of: 

Ancylite-(Ce)

Formula: 
SrCe(CO3)2(OH)·H2O
Strunz: 
5.DC.05
Hardness: 
4.0 - 4.5

Ancylite-(La)

Formula: 
Sr(La,Ce)(CO3)2(OH)·H2O
Strunz: 
5.DC.05
Hardness: 
4.0 - 4.5

Hilairite

Formula: 
Na2Zr[SiO3]3·3H2O
Strunz: 
9.DM.10
Hardness: 
4.5
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