In operation since 1955, SamQuarz is the largest producer of high-quality silica in South Africa, used primarily in the production of glass and in the metallurgical smelting process, and meets 35% of the country’s total annual consumption. The operation, which produces two key products - high quality silica and chert - comprises a large open pit and processing plant.
With respect to geology, this quality deposit occupies a mega-sinkhole that formed in cherty dolomites of the Malmani Sub-group. The dolomites are overlain in unconformity by a layer known informally as the ‘giant chert’. Both the giant chert and the quartzite are part of what is known as the Rooihoogte formation. The current mine design indicates a combined final pit area of about 46 hectares at 23 level, which is a maximum depth of 230 metres below surface. The successful exploration programme conducted in October 2008 resulted in an increase in the reserve base of the mine to 60 million tonnes of proven and probable reserves of silica and 11.48 million tonnes of proven and probable reserves of chert.
SamQuarz has well-defined markets for its products. It supplies a number of blue-chip companies in the glass manufacturing industry and metallurgical sector, including:
The mine has also successfully penetrated the construction sector and is now aiming to develop new markets in the foundry industry.
View the Directors’ review on SamQuarz in the Annual Report 2009. (PDF – 161KB)
© 2009 Petmin Limited
SamQuarz remains the largest producer of silica in South Africa