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Pentagonite, Calcite, and Heulandite

While in Tucson in early 2020, Jonathan Stone of Studio Mineralia had the opportunity to photograph this remarkable specimen of a small cluster of pentagonite crystals that had supported the growth of cubic calcite crystals. It sits atop miniature heulandite on a basalt matrix. The specimen was discovered in 2012 at the notable Wagholi Quarries, in Pune, Maharashtra, India, and is featured on Mindat.

JONATHAN STONE, WWW.STUDIOMINERALIA.COM

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Rock&Gem Magazine
Oct 2020
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