Drill cores from Norilsk

This core consists mainly of pyrrhotine/pentlandite ore with yellow chalcopyrite or                        Pentlandite/Pyrrhotine ore with black magnetite grains
talnakhite. [Maurice de Graaf]                                                                                                        [Maurice de Graaf]

Gabbrodolerite with minute white metallic inclusions.                                                                    Complex and not yet by me investigated ores in gabbrodolerite from Norilsk
[Maurice de Graaf]                                                                                                                        [Maurice de Graaf]