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 , 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.
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