Comment
Author: Admin | 2025-04-28
Due to basement upliftment was interpreted to be the major cause of vertical displacement within the ore body.Prominent geological structures within the Maseve ore body are iron-rich ultramafic pegmatoid (IRUP) intrusions (which mainly affect the Merensky reef), the east-west trending Chaneng dyke, and the North and South UG2 faults.The Transition Zone has been delineated between the Central reef facies and Normal reef facies, where the reef and surrounding lithologies settle between the two facies types and are characterised by a thickening of the footwall, anorthosite, from approximately 1.5m to 5m. This thickening is not consistent or gradual and is characteristic of frequent undulations of the Merensky reef. PGE mineralisation occurs within the Upper Critical Zone along two specific layers, the Merensky reef and the Upper Group 2 reef (UG2 reef). RBPlat’s operations mine the Merensky and UG2 reef layers.Two well understood geological structures are present within the RBPlat mining rights, namely the Elands River graben, situated north of Styldrift, just south of the Caldera fault, and the Boundary fault, situated to the east of Styldrift I shaft:- The Elands River graben is a series of faults with sinistral deformation, striking ENE-WSW, resulting in a graben structure.- The Boundary fault is a dextral strike slip fault, striking NNW-SSE with horizontal displacement of 100m.Both structures are accounted for in the known geological losses which are used in the Mineral Resources and Reserves evaluation.Regional variations in the geological characteristics of the Merensky and UG2 reefs are fundamental to understanding the nature, origin and
Add Comment