Fregeneda–Almendra pegmatitic field

The Fregeneda–Almendra pegmatitic field is a geologic area in the Iberian Peninsula extending across the Portuguese district of Guarda and the Spanish province of Salamanca. Part of the Central Iberian Zone, it is located in the western part of a narrow E–W metamorphic belt. It consists of a variety of granitic pegmatites, where some rocks are rich in lithium. The Li minerals include spodumene, petalite, lithian muscovite and montebrasite.

A mining site for the extraction of lithium, tin, niobium and tantalium is located in La Fregeneda area.