SC482 - Sodalite var Hackmanite
Locality: Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada (MINDAT)
Size: 6 x 5.5 x 3 cm - Miniature (3-6 cm)
Weight: 103.1 g
minID: 32V-7K3
Vein of tenebrescent or photochromic sodalite (hackmanite) in matrix. Under longwave UV light the sodalite fluoresces the typical bright orange; under shortwave the fluorescence is a much dimmer red. Normally white, the sodalite becomes purple upon exposure to UV light, shortwave being more effective. White light will bleach back the sodalite to white.
