Chalcocite, Calcite
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Collector’s EdgeFeatured
The Bristol Copper Mine in Hartford Co., Connecticut is one of the world’s premier Chalcocite localities – and an all-time United States classic. Workings at the mine began in 1837, where it produced high-grade copper ore until 1895 when production ceased. The mine remained dormant for decades, but the copper shortages of WWII inspired the Connecticut Mining and Milling Company to re-open the property to mining operations in 1947. Post-war copper prices falling and a largely unsuccessful venture led to the ultimate closure of the mine in 1953.
Product details
Species
SizeCabinet
Dimensions4.4 x 9.5 x 12.6 cm
Listed on09/25/2025
SKU65400
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Mineral guide
Learn about Chalcocite
dark steel-gray crystals with bright metallic luster and dramatic twinning; rare, well-formed specimens attract collectors and highlight sites.
Regional guide
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