Clinoptilolite-K (FOV 1.5 x 1.3 mm) Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Original description: From the only confirmed find of clinoptilolite-K at MSH. Thanks to Ralph Thomas and Dick Tillett (the original finder) MOB coll. — Photo: Modris Baum · Public domain
Clinoptilolite-K
The potassium-dominant clinoptilolite — a microporous natural zeolite forming white to reddish monoclinic crystals.
Intro adapted from Wikipedia (CC BY-SA).
Clinoptilolite-K is an IMA-recognized mineral species in the silicate class, with the chemical formula K₆(Si₃₀Al₆)O₇₂·20H₂O.
It crystallizes in the monoclinic crystal system (space group C2/m). It is a member of the Heulandite structural group.
IMA symbol Cpt-K, IMA status: approved, named in 1923.