Cavansite with Heulandite

Cavansite with Heulandite from Wagholi Quarry, Wagholi, Maharashtra, India, measuring 62 × 52 × 31 mm and weighing 75 grams. The specimen shows vivid blue Cavansite concentrated against a paler mineral surface. That strong contrast gives the piece an immediate visual appeal, while the recorded Heulandite association adds another mineralogical dimension.

Cavansite is a hydrated calcium vanadium silicate, with vanadium contributing to its distinctive identity. Heulandite belongs to the zeolite family, so the association brings together related secondary silicate subjects without making them members of the same mineral group. It is an engaging pairing for a collection that follows the mineral growth associated with volcanic-rock cavities and alteration.

Wagholi Quarry is retained as the specific source within Maharashtra. The 62 mm span provides room to appreciate the blue mineral areas together with their paler surroundings, and the closer photographs reveal the contrast at a smaller scale. The specimen offers both an overall display subject and a reason to examine the association in more detail. This example comes from the David Vince Collection. It combines a named Indian quarry locality with a visually memorable mineral and an accompanying zeolite. That makes it an inviting piece for a collector exploring Indian secondary silicates, where colour may draw the eye first but the association, locality and collecting history provide a fuller and more lasting interest.