...Benedek Gál; Ferenc Molnár; Dean M. Peterson Abstract The South Filson Creek mineralization occurs above the basal units of the South Kawishiwi intrusion and represents an uncommon geologic setting of Cu-Ni-platinum-group element (PGE) mineralization within the Duluth Complex. Unlike other...

...Zsolt Benkó; Aberra Mogessie; Ferenc Molnár; Mark J. Severson; Steven A. Hauck; Sara Raič Abstract A strong relationship was documented in the charnockitic footwall at the Spruce Road Cu-Ni sulfide deposit (South Kawishiwi intrusion, Duluth Complex) between the contact metamorphic processes...

... found within the Partridge River and South Kawishiwi intrusions of the Duluth Complex occurs in a variety of rock types, all produced from varying degrees of fractionation of a high-Al olivine tholeiite (HAOT) parental magma. Mineralization is characterized by high Cu/Ni ratios (bulk rock values...

... recognized by the displacement of plagioclase and plagioclase–olivine cumulate layers within the so-called South Kawishiwi intrusion. This work represents the first field documentation of extensive faulting in the Duluth complex and shows that fault offsets are an important complicating factor...

... (1996) and was designed to address two aspects of the mineralization. First, the PGE occurrence is distinct from more sulfide-rich Ni-Cu-(± PGE) occurrences within basal troctolitic-gabbroic units of the Partridge River and South Kawishiwi intrusions of the Duluth Complex (e.g., Ripley, 1990 ; Hauck...

... occurrences spread over a distance of 55 km occur along the basal contact of two adjacent troctolitic intrusions, the Partridge River and South Kawishiwi intrusions ( Severson and Hauck, 1990 ; Severson, 1994 ). These intrusions are host to 4.4 billion tons of subeconomic mineralization grading 0.66 percent...

... PdCu alloy in a drill core (DU-15) from the South Kawishiwi Intrusion of the Duluth Layered Intrusion Complex, Minnesota, USA ( Saini-Eidukat et al. , 1990 ). The mineral may be equivalent to skaergaardite, but no XRD studies were performed on the material. The Duluth intrusion is composed of several...

...James M. Brenan; Chusi Li Abstract Measurements of the Fe and Ni content of olivine and coexisting bulk sulfide from the different sulfide segregations within the Voisey’s Bay intrusion reveal systematic variations in Fe-Ni partitioning with sulfide nickel content. In light of the recent...

... sulfide assimilation : Geochimica et Cosmochimica Acta , v. 133 , p. 47 – 67 . Lee , I. , and Ripley , E.M. , 1996 , Mineralogic and oxygen isotopic studies of open system magmatic processes in the South Kawishiwi Intrusion, Spruce Road area, Duluth Complex, Minnesota : Journal...

... significant Cu-Ni sulfide mineralization comprise the northwestern part of the Duluth Complex and the Partridge River and South Kawishiwi intrusions. Each contains very large deposits of low-grade disseminated Cu-PGE-Ni sulfide mineralization in the lower part of the host intrusion ( Miller et al., 2002...