Johan van Zyl worked closely with Z* directors on west coast diamond operations in Oranjemund and Kleinzee before joining Z* when it was formed in June 2008. In addition to extensive geostats skills, Johan also looked after many of our our clients GIS needs. Johan...
On the 1st of July 2018 Z* celebrated their 10th birthday. In the world of consulting a decade is actually a long time and we are very proud of this achievement. Coming together to start Z* was a little daunting as we were surrendering the security of a large...
Angolan geologists have commenced the second practical phase of specialist training in sampling optimisation and mineral resource estimation, this time at the Z* Cape Town office. This follows an initial training phase completed on site in Angola. Despite the language...
Following work undertaken for Kumba on their Sishen mine Z* was asked to update the Kolomela Mineral Resource. The evaluation of Kolomela, situated in the Northern Cape near Postmasburg, involved Johan and David in detailed and complex multivariate analysis and...
Z* has entered into an agreement with Orion Minerals to assist with the evaluation of the Prieska Copper Mine (PCM) in the Northern Cape. The PCM deposit was extensively mined between the seventies and nineties and results from recent drilling and sampling programmes...
The 11th International Kimberlite Conference was held in Gaberone and coincided with Botswana celebrating 50 years of diamonds. David represented Z* at the conference and co-authored a paper on micro diamonds with geologists from De Beers.
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