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Garronite-Na

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CR770091

Garronite-Na

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2 × 2.3 cm
Description

Garronite is a very rare mineral closely related to gobbinsite, which occurs more abundantly at MSH. While most MSH gobbinsites have a very characteristic appearance as aggregates of striated "chevrons", not all MSH gobbinsite looks like that. Some supposed garronite has turned out to be gobbinsite instead.

This specimen comes from the Haineault collection. Gilles Haineault is a  prolific collector and authority on the minerals of Mont Saint-Hilaire.

With Mckelveyite-(Y)

Mineral Data
What's on the rock

Garronite-Na

Formula: 
Na6(Al6Si10O32)·8.5H2O
Crystal System: 
Monoclinic
Type Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada