Catapleiite with Aegirine and Analcime - image 1

Catapleiite with Aegirine and Analcime

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Catapleiite is a well known mineral from Mont Saint-Hilaire but very rarely does it occur in specimens of this remarkable size. The overall dimensions of this Catapleiite crystal are 4.8 x 4.7 cm, forming a modified hexagonal plate with overgrowths of black Aegirine and milky white Analcime. Catapleiite is a hydrated sodium-zirconium silicate commonly found throughout the complex Mont Saint-Hilaire pluton which is now classified as an alkaline gabbro-peralkaline syenite. This remarkable quarry, officially still referred to as the Poudrette quarry among mineralogists, now has 437 valid recorded mineral species and is type locality to 71 of these! Although Catapleiite is commonly distributed throughout the quarry, it typically ranges from micro-crystals up to about 1 cm, hence this specimen is exceptional.

Product details

SizeMiniature
Dimensions4.9 x 4.7 x 1.2 cm
Added on12/02/2024
Current owner
Unknown Owner
Acquired
Jul 2026
Price paid
$7,500.00
Previous owners
DateCollectorAcquisition price
—Crystal ClassicsNot disclosed

Learn more

Catapleiite
Mineral guide
Learn about Catapleiite
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Catapleiite
Regional guide
Catapleiite from Mont Saint-Hilaire
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Locality guide
Mont Saint-Hilaire
Mont Saint-Hilaire, Canada — a premier collector locality famed for extreme species diversity and display specimens, from serandite blades to carletonite.