Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Monteregie, Quebec, Canada
Thumbnail, 1.3 x 1.0 x 0.25 cm
A superb, unusually euhedral single crystal of catapleite, complete all around (although the bottom edge is stuck into putty here). Most cata's are thin parallel growth jobbies but this pocket/habit is pretty much acknowledged to represent the best stereotypic crystals for the species to date (and hence, they cost more, as well). Small crystals of siderite attached. Thickness = 2.5 mm 1.3 x 1 cm