Aragonite (variety Cu-bearing aragonite)

Matienzo, Karrantza Harana/Valle de Carranza, Comarca Las Encartaciones, Vizcaya / Bizkaia, Basque Country (Euskadi)  Spain

Specimen size: 7.6 × 5.8 × 3.7 cm = 2.99” × 2.28” × 1.46”
Main crystal size: 6.2 × 1.2 cm = 2.44” × 0.47”