Analcime from Poudrette Quarry - image 1

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Analcime from Poudrette Quarry

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A glassy mostly gemmy yellowish green crystal of leucophanite measuring 0.5 cm on edge on top of a white crude crystal of analcime with minor serandite. Very slight damage present to one quarter of the crystal, this is still a good reference quality example for the species. The specimen comes with a previous label from the collection of Ray DeMark, he collected the piece on July 15, 1986.The Poudrette Quarry is situated within the Cretaceous-aged Mont Saint-Hilaire alkaline intrusive complex in Quebec, Canada, formed by rare magma intrusions that concentrated high levels of incompatible elements. Operating primarily as a commercial stone quarry, it became world-famous among mineralogists and collectors due to its complex pegmatite pockets and xenoliths, which have yielded hundreds of unique and rare mineral species found nowhere else on Earth. Intensive commercial quarrying operations over the decades exposed these rich cavity systems, allowing researchers and hobbyists to salvage an extraordinary diversity of pristine specimens before active extraction wound down.