Zeolites

 Croft Quarry, Leicestershire Croft quarry on the outskirts of Leicester is well known for its fine Analcime crystals.  This specimen

 Magheramorne Quarry, UK A half nodule of beautiful snow-white Natrolite with a central vug of terminated crystals from Magheramorne

 Rytina souteska (Ritinatal), Bohemia (Böhmen; Boehmen) A single lustrous white-colourless crystal of Chabazite in the twinning habit called Phacolite from the Czech

 Wagholi Quarries, Maharashtra An excellent specimen of rich blue Cavansite crystals clustered and scattered measuring to 1.6cm diameter,