Nr. 102621081

Nr. 102621081

Pentagonite is a rare, vibrant blue, brittle calcium vanadium silicate mineral
often found as radiating, acicular crystal sprays within basalt cavities. As a dimorph of cavansite, it has the same chemistry but forms long, slender, orthorhombic prisms that are often high-temperature twins. The most prized specimens originate in Wagholi, India.
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