Aragonite on Dolomite

Azcárate Quarry, Eugui, Esteríbar, Comarca Auñamendi, Navarre, Autonomous Community of Navarre  Spain (1996)

Specimen size: 9.6 × 5.3 × 4.8 cm = 3.78” × 2.09” × 1.89”
Main crystal size: 0.2 × 0.1 cm = 0.08” × 0.04”