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Luque del Villar, Francisco Javier ; Ortega Menor, Lorena ; Barrenechea, José F. ; Millward, David ; Beyssac, Olivier ; Huizenga, Jan-Marten | Geological Society of America | 2009Recognized large occurrences of fl uid-deposited graphite displaying high crystallinity were previously restricted to high-temperature environments (mainly granulite facies terranes). However, in the extensively mined Borrowdale deposit (UK), th[...]texto impreso
Luque del Villar, Francisco Javier ; Ortega Menor, Lorena ; Fernández Barrenechea, José María ; Huizenga, Jan-Marten ; Millward, David | Geological Society of London. | 2012Massive graphite deposition resulting in volumetrically large occurrences in volcanic environments is usually hindered by the low carbon contents of magmas and by the degassing processes occurring during and after magma emplacement. In spite of [...]texto impreso
Ortega Menor, Lorena ; Millward, David ; Luque del Villar, Francisco Javier ; Fernández Barrenechea, José María ; Beyssac, Olivier ; Huizenga, Jan-Marten ; Rodas, Magdalena ; Clarke, S.M. | Elsevier Science Ltd | 2010The volcanic-hosted graphite deposit at Borrowdale in Cumbria, UK, was formed through precipitation from C–O–H fluids. The ?13C data indicate that carbon was incorporated into the mineralizing fluids by assimilation of carbonaceous metapelites o[...]texto impreso
Luque del Villar, Francisco Javier ; Huizenga, Jan-Marten ; Crespo Feo, Elena ; Wada, Hideki ; Ortega Menor, Lorena ; Fernández Barrenechea, José María | Springer Science Business Media | 2014Graphite deposits result from the metamorphism of sedimentary rocks rich in carbonaceous matter or from precipitation from carbon-bearing fluids (or melts). The latter process forms vein deposits which are structurally controlled and usually occ[...]
