JFD107AO3: A Basque classic. Generations of collectors there had collected, and continue to collect, these characteristic calcites that come from one specific area of a very large iron mine. Very abundant in the past, nowadays it is increasingly difficult to get good specimens from there.
Bodovalle Mine, Gallarta, Abanto y Ciérvana/Abanto Zierbena, Comarca Gran Bilbao, Vizcaya / Bizkaia, Basque Country (Euskadi)  Spain (±1966)

Specimen size: 9.8 × 7 × 3.7 cm = 3.86” × 2.76” × 1.46”

Main crystal size: 2 × 1.6 cm = 0.79” × 0.63”