Green Heulandite (#1141) Barite making it an essential addition

making it an essential addition to any collection

Weight: Varies naturally

with mining activity dating back thousands of years

Trancas geodes formed inside volcanic rock as mineral rich groundwater slowly deposited layers of silica into hollow cavities

Chalcedony

Green Heulandite (#1141) Barite making it an essential additionApproximate Size: 5. 25 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.