For thousands of other reports visit RSC's Mineral Intellingence Map
Zimplats Holdings Ltd.
Summary
| Project: | Ngezi | |
|---|---|---|
| Deposit: | Ngezi | |
| Location: | Zimbabwe | |
| Commodities: | Platinum-Palladium-Ruthenium-Rhodium-Osmium-Iridium | |
| Date: | 9/12/2018 | |
| Report Code: | JORC | |
| Report Type: | Resource Estimation | |
| Project Stage: | Active Mining & Production | |
| Report details: | 12-9-2018: Zimplats Holdings Ltd. announces a Resource Estimation report for its Ngezi deposit at the Ngezi project. Update mineral resource and ore reserve estimate at the project. The following is a summary of the estimate of Mineral Resources and Ore R | |
| Resources: | (Reserve, P+P): 226.3Mt @ 3.37g/t 6E PGE for 11.46Moz Pt contained | |
| CP/QP: | [Resources]: Steven Duma (Internal) | |
| ABSTRACT: | The following is a summary of the estimate of Mineral Resources and Ore Reserves held under the Zimplats Mining Leases on the Great Dyke of Zimbabwe, as at 30 June 2018. The highlights of the changes are accompanied by a JORC Table 1 document below. The Great Dyke of Zimbabwe developed as a series of initially discrete magma chamber compartments, which coalesced as the chambers filled. On the basis of structure, style of layering and continuity of layers, the Great Dyke has been sub-divided into five sub-chambers namely the Wedza, Selukwe (Shurugwi), Sebakwe, Darwendale and Musengezi sub-chambers. The stratigraphic units in each sub-chamber are classified into the ultramafic (lower) and the mafic (upper) sequence. The ultramafic rocks are dominated from the base upwards by dunite, harzburgite and pyroxenite, while the mafic rocks consist mainly of gabbro and gabbronorite. Narrow layers of chromitite occur at the base of cyclic units throughout the ultramafic sequence. The platinum-bearing horizon is known as the Main Sulphide Zone (MSZ), which is part of the lower sequence and is located below the contact with the mafic sequence. The platinum-bearing MSZ is located in the P1 pyroxenite some 5m to 50m below the ultramafic/mafic contact. The MSZ is a continuous layer, 2m to 10m thick, and forms an elongated basin. The zone strikes in a north-north-easterly trend and dips between 5° and 20° on the margins, flattening towards the axis (centre) of the basin. The areas where the dip is less than 9° is referred to as the “Flats”; these have historically been the target for mining due to the ease of operating. The areas with dips between 9 and 14° are referred to as the “Upper Ores I”. Peak base metal and platinum group metal (PGM) values are offset vertically with palladium peaking at the base, platinum in the centre and nickel towards the top. Visual identification of the MSZ is difficult, therefore systematic monitoring of the reef using various sampling methods is needed to guide mining. The accompanying schematic diagram illustrates the form of the Great Dyke. | |
Full Report
opaxe is a smart software platform that reconfigures and redistributes information and produces business insights to help mining professionals and investors make better decisions. We utilise technology and machine learning for data collection and human intelligence for the value-added services.
Full Report