Sylvania Dump Operations treat PGM-rich chrome tailings materials from Samancor Chrome’s mines on the Western and Eastern Limbs of the Bushveld Igneous Complex.
Sylvania Dump Operations (SDO) are treating beneficiation and platinum group metal processing plants: Millsell, Mooinooi, Lesedi, Doornbosch, Lannex and Tweefontein, focusing on the retreatment of PGM-rich chrome tailings materials from Samancor Chrome’s mines on the Western and Eastern Limbs of the Bushveld Igneous Complex.
The Bushveld Igneous Complex (BIC) is situated within the north-central Kaapvaal Craton, this complex is a saucer-like intrusive igneous mass extending for about 400 km from east to west and roughly the same distance north to south.
This massive Proterozoic intrusive body, or, more likely, a series of interconnected intrusive, has a surface area of approximately 66 000 km2 and consists of a mafic-ultramafic succession of layered and massive rocks known as the Rustenburg Layered Suite (RLS), a penecontemporaneous series of granitic rocks, termed the Lebowa Granite Suite and felsic extrusive rocks of the Rooiberg Group. For the majority of the area of the BIC, the Transvaal Supergroup forms the floor.
The lower mafic layered intrusion, the Rustenburg Layered Suite consists stratigraphically of a Marginal Zone, a Lower Zone, a Critical Zone and an Upper Zone.
Economic concentrations of PGMs occur mainly in three distinct units within the Critic ........
