Mineral: Sphalerite with Quartz
Locality: Malaespera Mine, Barrio de la Peña, Bilbao, Comarca Gran Bilbao, Vizcaya / Bizkaia, Basque Country (Euskadi), Spain
Dimensions: 5.5 × 3.4 × 2.4 cm

Description: Group of sharp Sphalerite crystals, with the crystal faces perfectly defined and lustrous. With small whitish Quartz crystals in distinct color contrast. Coming from a current urban area in northern Spain.

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