Mining History of Alum in Mazarrón Curiosity · Mazarrón, Bajo Guadalentín, Murcia Image of Mazarrón, not of the place itself. In the 1490s Pedro Pacheco, Marquis of Villena, was granted the concession of alum mines that brought Mazarrón its first prosperity; in 1572 the settlement on the Cabezo de San Cristóbal received the title of town from Felipe II. Photo: Pedro J Pacheco (CC BY-SA 3.0 es) What to see and do in Mazarrón