Poudrette Quarry, Mont Saint-Hilaire, Rouville RCM, Monteregie, Quebec, Canada

KLi₂Al(Si₄O₁₀)(F,OH)₂

Polylithionite is the lithium rich end member in the Polylitionite-Trilithionite series (which includes Lepidolite as an intermediate member). In this specimen, the Polylithionite forms pale brown rosettes on a section of a large Albite crystal. The Polylitionite has a high luster. There are black Aegerine crystals scattered around the specimen. On the bottom, are some clear unidentified crystals (seen in the last 2 pictures). These are quite nice, but there are so many different species at this location, it is hard to tell what these are. The edges of the Polylitionite have some wear.

6.1 x 3.8 x 2.5 cm

Sold Specimen retained as part of the Minerals Sold But Not Forgotten Galleries