Location: Miguel Vacas Mine, Vila Viçosa, Évora, Portugal.
Sample with 3.0 x 2.0 x 1.5cm filling a schist fracture with short prismatic dark green bipiramidal Libethenite crystals up to 2mm in size associated with earthy ocher color Limonite. Generated in a supergenic enrichment zone of a copper deposit, mainly in brecciated quartz veins with other copper phosphates and carbonates (pseudomalachite, malachite, azurite, etc.).