PGE-bearing Ni-Cu-Sulfide Mineralization in the Lusatian anticline

摘要

The PGE content of liquid magmatic Ni-Cu(-PGE) sulfide mineralization in the Lusatian anticline has been known since the early 20th century. The mineralization occurs only in vein- or stock-like intrusive bodies of gabbroic, dioritic or noritic composition. Mineralization consisting mainly of pyrrhotite, pentlandite and chalcopyrite probably results from gravity segregation of an exsolved sulfide melt. Sulfides occur in general near the contacts of the intrusions. Different types of ore textures can be distinguished. Besides extensive fieldwork at numerous exposures, microscopic, geochemical, and semiquantitative microanalysis was carried out to characterize the sulfide mineralization and the PGE phases. These contain, beside Pt and Pd, remarkable amounts of Sb, Te, Hg and As. The Lusatian Ni-Cu(-PGE) mineralization is genetically similar to Norilsk-Talnakh-type ore deposits.