Experimental Geochemistry and Petrology

The experimental investigations add to our knowledge of accretion and primordial differentiation processes as well as to our knowledge of element enrichment processes in massive sulfide ore complexes. With the experimentally derived data it may be even possible to characterize the source of basalts and discriminate between different geotectonical settings. - Phase relations in the Fe-Ni-Cu-PGE-S system at magmatic temperature and siderophile element partitioning between coexisting metal, metal sulfide and silicate phases - Textural equilibria of iron sulfide liquids in partly molten silicate aggregates - Solubilities of sulfur in silicate melts and the influence of additional chalcophile elements on the S solubility - Fractionation mechanisms of chromite in conjugate fluid/silicate melt systems - a case for flotation in nature

Drittmittelgeber:

Deutsche Forschungsgemeinschaft

Beteiligte Wissenschaftler:

Prof. Dr. C. Ballhaus, C. Bockrath, Dr. A. Holzheid, Dr. S. Matveev

Veröffentlichungen:

Ballhaus C., Sylvester P.: PGE enrichment processes in the Merensky reef. Journal of Pe-trology. 41, 454-561, (2000)

Courtial, P., Gottsmann, J., Holzheid, A. and Dingwell, D.B.: Partial Molar Volumes of NiO and CoO Liquids: Implications for the Pressure Dependence of Metal-Silicate Par-ti-ti-oning. Earth and Planetary Science Letters. 171, 171-183, (2000)

Holzheid, A., Schmitz, M.D. and Grove, T.L.: Textural equilibria of iron sulfide liquids in partly molten silicate aggregates and their relevance to core formation scenarios. Journal of Geo-physical Research. 105 (B5), 13555-13567, (2000)

Holzheid, A., Sylvester, P., O'Neill, H.St.C., Rubie, D.C. and Palme, H.: Evidence for the addition of a late chondritic veneer to the Earth from high pressure partitioning of Pd and Pt. Nature 406, 396-399, (2000)

Walter, M.J., Newsom, H.E., Ertel, W. and Holzheid, A.: Siderophile Elements in the Earth and Moon: Metal/Silicate Partitioning and Implications for Core Formation. In: Origin of the Earth and Moon (eds. R. Canup and K. Righter), University of Arizona Press, 235-289, (2000)