Cascandite

cascandite

jervisite

scandiobabingtonite

albite

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Formula: CaScSi₃O₈(OH)
Inosilicate (chain silicate), single width chains, wollastonite group, scandium-bearing mineral
Crystal System: Triclinic
Specific gravity: 3.03 calculated
Hardness: 4½ to 5½
Streak: White
Colour: Pale pink
Common impurities: Ti,Al,Mn,Mg,Na
Environments

Plutonic igneous environments
Pegmatites

Cascandite occurs in granite and granite pegmatites. Common associates are albite, jervisite and scandiobabingtonite (Mindat).

Localities

At the type locality, the Giacomini Quarry, Agrano, Omegna, Verbano-Cusio-Ossola Province, Piedmont, Italy, cascandite occurs as light pink crystals up to 0.20 x 0.08 x 0.02 mm³ in size in miarolitic cavities in granite. Associated minerals include quartz, orthoclase, jervisite and albite (AM 67.599-603).

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