Cavansite is a rare mineral found in the Deccan Traps near Pune, India.

Its name is derived from its chemical composition - calcium vanadium silicate.

It is a deep blue hydrous mineral, occurring as a secondary mineral in basaltic rocks,

along with a variety of zeolite minerals. Zeolites are minerals commonly used as commercial adsorbents and catalysts. The name zeolite is derived from the Greek word zéō, meaning "to boil" and líthos, meaning "stone" meaning rapidly heating material producing large amounts of steam from water that had been adsorbed by the material.

Cavansite is polymorphic with the even rarer mineral, pentagonite.  It was named for the unusual twinning which produces an apparent five-fold symmetry. But cavansite is also associated with few other minerals like apophyllite, quarts, calcite, stilbite etc.

Cavansite being less hard is not explored much as ore mineral or gem mineral. However, because of its rich color and relative rarity, cavansite is a sought after collector's mineral.

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