Jervisite , Cascandite Locality: Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy Original description: jervisite - some white tufts on cascandite - area 1 mm. Self collected november 2007. Sergio varvello photo and collection — Photo: Sergio Varvello · Public domain
Cascandite
Cascandite is an IMA-recognized mineral species in the silicate class, with the chemical formula CaScSi₃O₈(OH).
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Pectolite structural group.
Key properties: specific gravity 3.03; Vitreous luster.
IMA symbol Cas, IMA status: approved, named in 1980.
Found in miarolitic cavities in granite.
It is found associated with Quartz, orthoclase, albite, jervisite.
The name refers to CAlcium and SCANDium in the composition.