Green Drusy Heulandite Mineral Specimen (#1051) Marcasite sparkling crystal points across its

sparkling crystal points across its surface

Prehnite with Diamond Apophyllite mineral specimen from Jalgaon Maharashtra

Heulandite has a sheet-like open framework structure and is classified as a tectosilicate

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Green Drusy Heulandite Mineral Specimen (#1051) Marcasite sparkling crystal points across itsApproximate Size: 2 inches Green Drusy 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.