Brilliant chalcopyrite specimen from the renowned Tonglushan Mine in Daye County, Hubei Province, China. This compact 3.5 x 2 x 3.5 cm piece showcases the characteristic brassy-yellow metallic luster and iridescent tarnish that makes chalcopyrite a prized addition to any mineral collection. A fine example of Chinese copper ore mineralization, ideal for collectors seeking authentic geological specimens with documented provenance.
