CHEMISTRY Ca(VO)Si14O10.6H2O
CRYSTALLOGRAPHY Orthorhombic
CRYSTAL GROWTH AND HABITS Commonly forms divergent sprays of slender elongated prisms.
COLOR AND OTHER OPTICAL PROPERTIES Bright blue to greenish blue; transparent
HARDNESS 3 - 4
SPECIFIC GRAVITY 2.2 - 2.3
LUSTER Vitreous
STREAK Light blue
BREAKABILITY Brittle with one good cleavage
OCCURRENCE Cavansite forms as a secondary mineral most notably from the andesitic tuffs of the Poona District, India.
ASSOCIATED MINERALS Pentagonite (dimorphous with Cavansite), Calcite, Heulandite, Stilbite, Analcime, Apophyllite, Thomsonite
MINERAL NAME Named for its composition: CAlcium, VANadium, SIlicon