From: Mina Miguel Vacas, Vila Viçosa, Évora, Portugal.
  
Cluster of small sub-millimetric prisms of Reichenbachite with green-emerald covering smal Quartz crystals. With 2,0 x 1,4 x 0,9cm. Generated in a supergene enrichment zone of a copper deposit, mainly in brecciated quartz veins with other copper phosphates and carbonates (pseudomalachite, malachite, azurite, etc.).