Well-formed Chalcopyrite crystals with Dolomite and Galena on matrix from Sweetwater Mine, Ellington, Reynolds Co., Missouri, USA. An exquisite display from the historic Sweetwater Mine featuring sharp, well-formed chalcopyrite crystals sparkling with a rich golden-yellow metallic luster. These brilliant chalcopyrite crystals are beautifully set upon a contrasting matrix adorned with creamy dolomite crystals and striking galena clusters. The combination creates a vibrant interplay of colours and textures, showcasing the mineralogical richness the Sweetwater Mine is celebrated for. Sweetwater Mine, located within the renowned Viburnum Trend lead district, has a storied mining history dating back to the mid-20th century and is prized among collectors for its variety of high-quality sulfides and carbonates. This specimen is a proud representation of the region's geological complexity and exceptional mineralogy, making it a prized acquisition for collectors and enthusiasts alike.