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essentially
Specimens from this locality are sought after by mineral collectors
From Madagascar
About Prehnite and Apophyllite from India
These specimens feature charming
Green Heulandite (#1135) Chalcedony Stalactite essentiallyApproximate Size: 2. 5 inches Green Heulandite mineral specimen. Location: Aurangabad Maharashtra, India. Facts: Heulandite has a sheet like open framework structure, classified as a tectosilicate, where it's structure is composed of interconnected six membered rings of silicate tetrahedra, creating channels within the crystal that allow it to act as a Zeolite, capable of exchanging cation like sodium, calcium, and potassium within its structure.
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