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Hilairite Ancylite-(Ce) & Donnayite

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SYM681594

Hilairite Ancylite-(Ce) & Donnayite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.6 × 0.7 × 0.5 cm
Description

Brown blocky crystals of hilairite with white ancylite-ce crystals and white donnayite on matrix. 

Mineral Data
What's on the rock

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

Ancylite-(Ce)

Formula: 
SrCe(CO3)2(OH)·H2O
Strunz: 
5.DC.05
Crystal System: 
Orthorhombic
Hardness: 
4.0 - 4.5
Streak: 
White
Type Locality: 
Narsaarsuk pegmatite (Narssârssuk pegmatite), Narsaarsuk Plateau, Igaliku (Igaliko), Narsaq, Kujalleq, Greenland