Unusual Fe-Ti-Cr spinels from discordant bodies of iron-rich ultramafic pegmatite at the Amandelbult Platinum mine, northwestern Bushveld Complex

R. N. SCOON AND H.V. EALES. Spinels associated with discordant bodies of iron-rich ultramafic pegmatite are described from the Amandelbult Platinum mine in the northwestern part of the Bushveld Complex. The spinels are divided into three groups, disseminated Ti-magnetite, disseminated Fe-Ti-Cr spinel and massive Fe-Ti-Cr spinel. View document

A New Occurrence of Merensky Reef on the Flanks of the Zaaikloof Dome, Northeastern Bushveld Complex: Relationship between Diapirism and Magma Replenishment

ROGER N. SCOON. Exploration for platinum-group elements has resulted in the discovery of an occurrence of Merensky reef in the eastern limb of the Bushveld Complex, South Africa. The new discovery was made on the Dwarsrand property in the poorly known boundary area between the intensively explored western and central …

A new lg-6 chromite reserve at Eerste Geluk in the boundary zone between the central and southern sectors of the eastern Bushveld Complex

ROCER N. SCOON AND B. TEIGLER. Three-dimensional reconstructions of layered intrusions are an essential guide to unraveling processes in magma chambers. The Critical zone of the Bushveld Complex, South Africa, is ideally suited for this type of study as mining activities, including underground workings and borehole core, pro- vide unsurpassed …

Discordant Iron-Rich Ultramafic Pegmatites in the Bushveld Complex and their Relationship to Iron-Rich Intercumulus and Residual Liquids

BY ROGER N. SCOON AND ANDREW A. MITCHELL. The iron-rich ultramafic pegmatites comprise a suite of coarse-grained rocks that form discordant bodies within the layered sequence of the Bushveld Complex. These pegmatites, which are considerably more abundant than is generally realized, provide evidence for the differentiation of iron-rich residual melts. …

Platinum-Group Element Mineralization in the Critical Zone of the Western Bushveld Complex’ I. Sulfide Poor-Chromitites below the UG-2

ROGER N. SCOON AND B. TEIGLER. Primary stratiform platinum-group element (PGE) mineralizations associated with chromitites in the Critical zone of the Bushveld Complex, South Africa, are confined to cumulate layers that are regionally persistent over tens of kilometers. Four categories of chromitite are recognized: layers at the bases of cycles …

The Distribution and Main Geologic Features of Discordant Bodies of Iron-Rich Ultramafic Pegmatite in the Bushveld Complex

MORRIS J. VILJOEN & ROGER N. SCOON. Transgressive bodies of iron-rich ultramafic pegmatite, composed predominantly of varying proportions of hortonolite, clinopyroxene, ilmenite, and Ti magnetite are abundantly distributed throughout the layered mafic sequence of the Bushveld Complex. New information from field and underground studies, together with interpretations of detailed magnetic …