4N25: Although not as well known as the more famous Dolomite, Eugui sporadically yields Malachite too, coating crystals of Chalcopyrite.
Azcárate Quarry, Eugui, Esteríbar, Comarca Auñamendi, Chartered Community of Navarre (Navarre)  Spain (1993)

Specimen size: 3.5 × 3.0 cm = 1.38” × 1.18”