Twinned Dolomite

Asturreta Quarry, 'el pozo', Eugui, Esteríbar, Comarca Auñamendi, Navarre, Autonomous Community of Navarre  Spain (±1970)

Specimen size: 12.8 × 7.4 × 4 cm = 5.04” × 2.91” × 1.57”
Main crystal size: 4.1 × 3.4 cm = 1.61” × 1.34”