Pentagonite on Mordenite (Rare Find) Natural Mineral Specimen # B 5673

Features:

Primary Mineral: Pentagonite
Secondary Mineral: Mordenite
Size: 2 x 1.5 inches (5.1 x 3.8 cm)
Size Class: Miniature
Weight: 25 g (0.9 oz)
Locality: Pune, Maharashtra, India

A bright, glossy blue pentagonite cluster crowning a small piece of white mordenite from Pune. The bladed blue crystals radiate in a rosette and are sharp and well preserved for this rare species.

Pentagonite is the rarer dimorph of cavansite: the same calcium vanadium silicate chemistry in a different crystal structure. It typically forms twinned crystals with a five-sided, star-like outline, and nearly all fine examples come from the Pune district.

A light miniature at 25 g, suited to a species collection or a small display case.