Calcite with Goethite inclusions

Julia Mine, Barrio de la Peña, Bilbao, Comarca Gran Bilbao, Vizcaya / Bizkaia, Basque Country (Euskadi)  Spain

Specimen size: 14 × 11.3 × 6.2 cm = 5.51” × 4.45” × 2.44”
Main crystal size: 4.7 × 2 cm = 1.85” × 0.79”