Chalcopyrite specimen from the Tonglushan Mine in Daye County, Huangshi, Hubei Province, China. This brassy-yellow copper iron sulfide mineral displays the characteristic metallic luster and tarnish that makes chalcopyrite a prized addition to any mineral collection. Measuring 3.5 x 2 x 2.5 cm, this hand specimen offers excellent detail and vibrant color saturation typical of premium Chinese material. A beautiful example for collectors seeking authentic, well-documented mineral samples with strong geological provenance.
