Green Heulandite (#1135) Chalcedony Stalactite crystal size

crystal size

From Madagascar

Specimens from this locality are sought after by mineral collectors

essentially

The Tonglushan Copper Mine in Hubei Province is one of China's most historically significant copper deposits

Green Heulandite (#1135) Chalcedony Stalactite crystal sizeApproximate 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.