Product Details

Dimensions: 11.28 x 8.5 x 4.77 cm Weight: 13.6 oz (386 g) Locality: Casteel Mine, Missouri, USA Mineral(s): Chalcopyrite (Bornite), Quartz This chalcopyrite and quartz specimen features metallic chalcopyrite associated with quartz crystal growth on matrix. ABOUT The Casteel Mine in Missouri is known for producing sulfide minerals associated with quartz in hydrothermal deposits. Chalcopyrite forms as a copper iron sulfide mineral and commonly develops alongside quartz as mineral-rich fluids move through fractures and open spaces within the host rock. Specimens from this locality are collected for their metallic luster, crystal contrast, and natural mineral associations.