S.I. TURCHENKO (IPGG RAS)

Mafic-ultramafic intrusions with sulfide Cu-Ni-PGE mineralization: morphology and structural position

The formation of sulfide Cu-Ni-PGE deposits occurs in association with mafite-ultramafite intrusions, which are located in crustal stretching spaces, confined to fault zones with horizontal displacement of rocks. These faults are often located in rifting areas of igneous provinces due to the stress phenomena generated by plume-tectonic activity. The paper discusses structural morphology of large and small sulfide Cu-Ni-PGE deposits related to mafite-ultramafite intrusions. In addition, it is shown that the geometry of the intrusions, hosting deposits, and the location of mineral zones in them can be structurally subdivided into groups and controlled by the space created by structural deformations.
Keywords: mafic-ultramafic intrusions, sulfide Cu-Ni-PGE deposits, structural and morphological forms.