Cavansite Var. Pentagonite – Wagholi, Poona, India
 A particularly aesthetically pleasing cavansite specimen. The cavansite crystal consists of numerous radially grown pentagonites up to approximately 1.4 cm long. Freestanding pentagonite needles of this length are extremely rare!
 Pentagonite from the Wagholi Quarry near Poona, Maharashtra, India. Pentagonite, a rare orthorhombic variety of cavansite, is certainly one of the most spectacular mineral discoveries of recent years.
 The mineral was named in 1973 by the Americans Lloyd W. Staples, T. Evans, and James R. Lindsay. They named it after its pentagonal crystal twins. Pentagonite occurs in the cavities of volcanic rocks and is often found together with zeolites such as heulandite, but never with stilbite. The best-known localities are in the Indian state of Maharashtra.