Explanation

Also known as türkiye jade. A phosphate mineral with an aqueous framework structure with additional anions. Triclinal crystal system. Occasionally, short columnar crystals are observed, often appearing as cryptocrystalline blocks or crusty aggregates. Fresh green, light green, or blue-green. Stripes light green to white. Wax like luster. The cleavage {010} is complete, {001} is moderate. Mohs hardness 5-6, density 2.60-2.8g/cm3. Under dry and hot climate conditions, it is formed by the action of copper bearing solution on clay and phosphorus bearing rock, and is often associated with limonite, kaolinite, chalcedony, etc. Seyan block can be used as gems and craft carving materials; Loose debris can be processed as pigment.

Classification