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Ortega Menor, Lorena ; Luque del Villar, Francisco Javier ; Barrenechea, Edurne ; Rodas, Magdalena ; Millward, David ; Beyssac, Olivier | James Cook University School of Earth & Environmental Studies. Economic Geology Research Unit | 2009The volcanic-hosted graphite deposit at Borrowdale was formed through precipitation from C-O-H fluids. The G13C data indicate that carbon was incorporated into the mineralizing fluids by assimilation of carbonaceous metapelites of the Skiddaw Gr[...]texto impreso
Luque del Villar, Francisco Javier ; Barrenechea, José F. ; Ortega Menor, Lorena ; Rodas, Magdalena ; Millward, David | The Economic Geology Research Unit | 2009The only two known graphite vein-deposits hosted by volcanic rocks (Borrowdale, United Kingdom, and Huelma, Southern Spain) show remarkable similarities and differences. The lithology, age of the magmatism and geodynamic contexts are distinct, b[...]texto impreso
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
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Fernández Barrenechea, José María ; Luque del Villar, Francisco Javier ; Millward, David ; Ortega Menor, Lorena ; Beyssac, Olivier ; Rodas, Magdalena | Springer Science Business Media | 2009Graphite in the Borrowdale (Cumbria, UK) deposit occurs as large masses within mineralized pipe-like bodies, in late graphite–chlorite veins, and disseminated through the volcanic host rocks. This occurrence shows the greatest variety of crystal[...]texto impreso
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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[...]
