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Hilairite

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MCH883391

Hilairite

Rare Mineral

Description Tabs

Description
Locality: 
Bratthagen Quarries, Lågendalen, Hedrum, Larvik, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.1 × 1 cm
Description

An approx. 1 cm zone with several cream-coloured concentric coatings that are consisting of many microcrystals of hilairite, set on feldspar with aegirine. Hilairite is one of the rarest minerals in the Langesundsfjord/Larvikite Region in Southern Norway.

Label of Norsk Steinsenter (Torgeir Garmo), Lom, 1988.

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

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