Catapleiite

Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada

Specimen size: 3 × 2.8 × 1.6 cm = 1.18” × 1.10” × 0.63”
Main crystal size: 0.9 × 0.4 cm = 0.35” × 0.16”