Monteregianite-(Y) (type locality) with Pectolite on Albite
Monteregian intrusive, Poudrette quarry, Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada
Miniature, 4.5 x 3.0 x 2.0 cm
Ex. Paulo Matioli
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A rare specimen from the type and only locality! White, flattened prismatic crystals of monteregianite-(Y) to 1.5 mm with colorless, prismatic pectolite (to 1.5 mm) on white albite. Monteregianite-(Y) is a rare sodium potassium yttrium calcium silicate hydrate found in miarolitic cavities and other occurrences in nepheline syenite intrusive at Mont Sainte-Hilaire in the Monteregian Hills of Quebec. Ex. Paulo Matioli collection.