S.I. TURCHENKO (IPGG RAS)

Mafic­ultramafic magmatism without PGE and with them: tectonic petrologic and global mantle causes of such phenomenon

Ore deposits related with mafic-­ultramafic mantle magmatism contain sulfide Cu­Ni ± PGE deposits, but in many cases without PGE. Reasons for such a difference in mafic­-ultramafic mantle magmatism are most often not studied, but tectonic petrological understanding of this phenomenon requires explanation, both from a scientific point of view and for economic purposes, particularly since such deposits are of strategic importance. In the proposed paper, an at-tempt is made to provide a petrological tectonic and isotope geochemical explanation of the reasons for possible lack of platinum group elements for sulfide Cu­Ni±PGE deposits.
Keywords: Precambrian sulfide Cu­Ni ± PGE deposits, mafic­ultramafic mantle magmatism.