Calcite with Copper Arizona, USA Dimensions: 4.5 × 4.0 × 2.3 cm Provenance: Original vintage collection label, catalog no. 155, included with specimen. Label identifies the collector as "Gift."
An attractive Calcite specimen from Arizona featuring translucent white to milky crystals intergrown with rich copper mineralization on a rugged gray-green matrix. The calcite displays angular crystal faces and a soft vitreous luster, contrasting beautifully with the warm coppery-gold metallic surfaces. The copper mineralization occurs in prominent angular masses and irregular formations throughout the specimen, exhibiting brilliant metallic reflections in shades of bronze, gold, and reddish copper. The combination of bright calcite crystals, metallic copper tones, and textured matrix creates a visually striking and complex mineral association.
Arizona is renowned for its copper-rich mineral deposits, where hydrothermal activity has produced diverse associations of copper minerals and carbonate species. Calcite commonly forms within fractures and cavities of mineralized rock, crystallizing alongside or following episodes of copper deposition. This specimen illustrates the geological relationship between carbonate crystallization and copper mineralization, offering an appealing example of the mineral diversity found throughout Arizona's historic mining districts.
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