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Horned natrolite?

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

Obviously this natrolite contains some uranyl, which makes it light up green under SW.

The crystals are about 30 mm high.

Elongated natrolite crystals fluorescing due to uranyl
Nicely terminated natrolite crystas

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