Chalcopyrite

This vibrant chalcopyrite specimen from the Sweetwater Mine, Reynolds County, Missouri, features a striking display of iridescent, sharply crystallized chalcopyrite scattered across a contrasting, finely textured dolostone matrix. The chalcopyrite forms as well-defined clusters exhibiting a brilliant metallic luster in a vivid spectrum of natural tarnish colors. These lustrous groupings of crystals are aesthetically distributed across the matrix, creating appealing contrast and balance throughout the piece. Sweetwater Mine is historically recognized for producing exceptionally bright and colorful chalcopyrite specimens, often characterized by their sharp crystallization and vivid oxidation hues. The combination of crisp crystal form, intense luster, and classic locality association makes this an excellent representative specimen from one of Missouri’s most respected lead-zinc mining districts.