Fernández Barrenechea, José María

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First Name
José María
Last Name
Fernández Barrenechea
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Geológicas
Mineralogía y Petrología
Cristalografía y Mineralogía
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  • Publication
    Natural fluid-deposited graphite: mineralogical characteristics and mechanisms of formation
    (Yale University. Kline Geology Laboratory, 1998) Luque del Villar, Francisco Javier; Pasteris, Jill D.; Wopenka, Brigitte; Rodas, Magdalena; Fernández Barrenechea, José María
    This paper focuses on the similarities and differences between metamorphic graphite (formed in situ from organic matter) and fluid-deposited graphite. We discuss the formation of fluid-deposited graphite in terms of the source of carbon, the characteristics of the C-bearing fluids (the C-O-H system), the mechanisms of carbon mobilization, and the mechanisms of carbon precipitation. New and existing analytical data are compiled on the physical and chemical characteristics of fluid-deposited graphite olitained by the following techniques: optical microscopy, differential ilierrilal analysis, thermogravimetry, X-ray diffraction, Raman spectroscopy, and stable isotope mass spectrometry. Our discussions focus on major, that is, volumetrically significant, worldwide concentrations of graphite