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  1. No Access

    Article

    Stable (H, O, C) and noble-gas (He and Ar) isotopic compositions from calcite and fluorite in the Speewah Dome, Kimberley Region, Western Australia: implications for the conditions of crystallization and evidence for the influence of crustal-mantle fluid mixing

    In this study, the C-O-isotopic data from calcite at Yungul and Wilmott (Speewah. Western-Australia) are integrated with microthermometry, H2O-, CO2-content and H-He-Ar-isotopic data from fluid inclusions in gene...

    Gy Czuppon, R. R. Ramsay, I. Özgenc, A. Demény, L. G. Gwalani… in Mineralogy and Petrology (2014)

  2. No Access

    Article

    Geochemical and H-O-Sr-Nd isotope evidence for magmatic processes and meteoric-water interactions in the basal complex of La Gomera, Canary Islands

    The plutonic rocks of the Basal Complex of La Gomera, Canary Islands, Spain, were studied by means of major and trace element contents and by H-O-Sr-Nd isotope compositions in order to distinguish primary magm...

    A. Demény, R. Casillas, E. Hegner, T. W. Vennemann, G. Nagy… in Mineralogy and Petrology (2010)

  3. No Access

    Article

    The Yungul carbonatite dykes associated with the epithermal fluorite deposit at Speewah, Kimberley, Australia: carbon and oxygen isotope constraints on their origin

    The Yungul carbonatite dykes at Speewah in the Kimberley region of Western Australia were emplaced along a north-trending splay from the northeast-trending Greenvale Fault located at the western boundary of th...

    L. G. Gwalani, K. A. Rogers, A. Demény, D. I. Groves, R. Ramsay… in Mineralogy and Petrology (2010)

  4. No Access

    Article

    Mineralogy and geochemistry of silicate dyke rocks associated with carbonatites from the Khibina complex (Kola, Russia) – isotope constraints on genesis and small-scale mantle sources

    The eastern part of the agpaitic Khibina complex is characterized by the occurrence of dykes of various alkali silicate rocks and carbonatites. Of these, picrite, monchiquite, nephelinite and phonolite have be...

    S. Sindern, A. N. Zaitsev, A. Demény, K. Bell… in Mineralogy and Petrology (2004)

  5. No Access

    Article

    Oxygen isotope thermometry in carbonatites, Fuerteventura, Canary Islands, Spain

    Crystallization temperatures of the oceanic carbonatites of Fuerteventura, Canary Islands, have been determined from oxygen isotope fractionations between calcite, silicate minerals (feldspar, pyroxene, biotit...

    A. Demény, T. W. Vennemann, A. Ahijado, R. Casillas in Mineralogy and Petrology (2004)