The Hercynian tungsten mineralisation is interpreted to be of granitic affiliation. Mineralisation occurs as quartz veins bundles within a ring-dyke model and disseminated in greissenized granitic fingers.

La Parrilla Mine is located in the southeastern part of the central Iberian zone of the Iberian Massif, also known as the Hercynian Massif, which occupies the western part of the Iberian Peninsula, composed of crystalline and metamorphic rocks from the Paleozoic. The mineralization comprises coarse-grained scheelite- bearing veins located within greywackes and slates of the “Complejo Esquisto-Grauváquico” formation, from the Precambrian- Lower Cambrian.

These rocks have been folded and fractured by the Cadomian, Hercynian (the most important), and Alpine orogenies, and have also been afected by a low-grade regional metamorphism (green shale facies). The existence of a contact metamorphism halo indicates the possible presence of a Hercynian granite batholite at depth. The geology and metallogeny of the mine have been studied in detail by Campos et al. (1995) and Gumiel and Campos (2002).

The La Parrilla mine lies within the western part of the Iberian Peninsula, referred to as the Centro Iberian Zone, which represents the central part of the Hercynian orogeny. This area is dominated by intense metamorphism and multiple granitic intrusions. Mineralisation comprises coarse-grained scheelite bearing veins hosted within greywacke and shale. The ........

La Parrilla is a large, low capital, low operating cost tungsten and tin mine development located in Spain. The mine is approximately 300km southwest of Madrid and approximately 257km north of Seville, Spain.

Ore is to be mined utilising a conventional truck and shovel configuration at a strip ratio of approximately 1.35t of waste for every 1t of ore (1.35:1) averaged over the initial years of planned production.

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