Bolivarite is a very rare aluminium phosphate, related to evansite. In this specimen white bolivarite is filling vugs of a limonite matrix. This mineral was found as crusts and as a filling of cracks in some granitic rocks a few km from Pontevedra (Spain), on the road to Campo Lameiro. Its discoverers, Fernandez Navarro and Castro Barea, named it as a tribute to the eminent Spanish entomologist, exiled in Mexico after the Spanish Civil War, Ignacio Bolivar y Urrutia.