The product is a 4.75" Chalcopyrite with calcite specimen on matrix from the Sweetwater/Fletcher Mine in Reynolds County, Missouri, United States. This display specimen features a large piece of Calcite growing on a matrix, showcasing the beauty of natural formations from a specific location. Collectors and enthusiasts of rocks, fossils, and minerals would appreciate adding this unique and geologically significant piece to their collection. 4.75x3x2 inches. 9.9 oz.