RT Journal Article
T1 Estudio de inclusiones fluidas en granitos microfisurados. Mineralizaciones de W-Sn del Sistema Central Español
T1 Fluid inclusions study in microfissured granites: Application to W-Sn veins from the Spanish Central System
A1 Vindel, E.
A1 López García, José Ángel
A1 García Romero, E.
A1 Boiron, M. C.
A1 Cathlineau, M.
AB The geometry of the ore fluid migration was investigated in the (W-Sn) mineralizated granites of the Spanish Central System. Based on microthermometry, Raman microprobe and textural relationships, six types of fluid inclusions have been distinguished: 1) Magmatic hypersaline aqueous fluid represented by Lw-s inclusions. 2) Metamorphic aquo-carbonic fluids represented as different types of fluid inclusions: (i) H20 - C02-(CH4) fluids represented by Vc-w three phase inclusions at room temperature; (ii) H 20 - C 0 2-CH4 fluids showing two-phase at room temperature with a low density volatile phase displaying a large variation of the CH4/C02 ratio; (iii) H20-CH4 fluids represented by Lw-m two-phase inclusions with a volatile phase entirely dominated by CH4.3) Aqueous fluid sare shown by (iv) Lw1 and (v) Lw2 two phase in elusions with low to moderate salinity. Fluid trapping occurred in the granites by means of a complex succession of opening and reopening of microfracture network. NE-SW ductile-brittle cracks contains quartz-wolframite thus connected with FIP bearing aqueous-carbonic fluids. A later drop in C02 es recorded in N140°-150°E, N 100°-110°E, N-S and E-W. A latest fluid is represented by aqueous fluids crosscutting the precedent fluid inclusions planes
PB Sociedad Geológica de España
YR 1996
FD 1996
LK http://hdl.handle.net/10272/13199
UL http://hdl.handle.net/10272/13199
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 13 jun 2026