RT Journal Article
T1 Las mineralizaciones de wolframio asociadas a la granodiorita de Santa Coloma (Andorra)
T1 Tungsten-bearing ores related to the Santa Coloma granodiorlte (Andorra)
A1 Espinola, M. R.
A1 Soler Gil, Albert
A1 Arcos, D.
AB The late Hercynian Santa Coloma granodiorite intruded Paleozoic metasediments of upper Ordovician to Devonian age. Several forms of tungsten-bearing ores are found associated to the Santa Coloma granodiorite in the Central Pyrenees: veins, filled joints and skarns. Fluid inclusion study in quartz crystals from veins suggests that the mineralising fluid was a polysaline brine (22 wt% NaCI eq.) wich was trapped at 360 ±30 °C and 2.5 ±0.3 kbar, even the first mineralizing stage could be formed at higher temperatures (up to 500°C). Preliminary data of 8 MS of sulphides from skarn and vein mineralizations show values near 5 ± 1%o suggesting a sulphur of magmatic origin
PB Sociedad Geológica de España
YR 1996
FD 1996
LK http://hdl.handle.net/10272/13297
UL http://hdl.handle.net/10272/13297
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 14 jul 2026