Feli Sn deposit, La Fregeneda, Salamanca, Castile and Leon, Spain
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|Latitude & Longitude (WGS84):||41° 0' 39'' North , 6° 52' 4'' West|
|Latitude & Longitude (decimal):||41.011, -6.868|
|Other regions containing this locality:||Iberian Peninsula|
Network of two generation of pegmatite dykes and quartz-pegmatite veins.
Host rocks : greywacke schist complex (quartzites, greywackes, schists, pelites, calc-silicate layers) affected by Hercynian deformation and metamorphism.
Earliest phase is low-grade greenschist facies regional metamorphism.
Contact metamorphism (Lumbralas granite).
Second phase of regional metamorphism after intrusion : retrograde metamorphism (chloritization of biotite).
The two generations of pegmatite, intrude in tourmalinized micaschists, are connected with the intrusion of the granite and the second phase of deformation.
First generation : quartz pegmatite dykes, with quartz core and greisen selvages
Second generation : pegmatite and quartz veins
23 valid minerals.
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Encarnación Roda-Robles, Alfonso Pesquera (2007) Locality no. 3: Lepidolite-spodumene-rich and cassiterite-rich pegmatites from the Feli open-pit, (La Fregeneda, Salamanca, Spain) in ALEXANDRE LIMA & ENCARNACIÓN RODA ROBLES ed (2007) GRANITIC PEGMATITES: THE STATE OF THE ART - FIELD TRIP GUIDEBOOK. MEMÓRIAS N. º 9, UNIV. DO PORTO, FACULDADE DE CIÊNCIAS, DEPARTAMENTO DE GEOLOGIA pp 55-64