A group of very well defined crystals, one of them clearly dominant, with parallel growths on the faces, very bright and with a very vivid blue color. There are also small Feldspar and Calcite crystals and aggregates of small, black, acicular, Arfvedsonite crystals. The sample is with a label of a Canadian collection.
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec Canada (2013)
Specimen size: 4.6 × 3.3 × 4.3 cm = 1.81” × 1.30” × 1.69”
Main crystal size: 1.7 × 0.9 cm = 0.67” × 0.35”
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