Carletonite

Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada (±2002)

Specimen size: 5.4 × 5 × 2.1 cm = 2.13” × 1.97” × 0.83”
Main crystal size: 1.5 × 1.3 cm = 0.59” × 0.51”