Gold One

The currently dormant Sub Nigel and Spaarwater gold mines are situated 1km northwest of the town of Nigel on the East Rand. The Sub Nigel mine produced 15 million ounces of gold from the Nigel Reef between 1909 and 1971. A total of 29.7 million tonnes of ore at an average head grade of 15.7g/t were milled during this period. The 900m deep Sub Nigel 1 Shaft on the property was recently re-commissioned and licensed.

Spaarwater gold mine, located immediately west of Sub Nigel, mined the Main Reef (stratigraphically equivalent to the Nigel Reef) between 1947 and 1969. The mine produced 850,000 ounces of gold from 2.56 million tonnes of ore at an average head grade of 10.4g/t. The mineralization is confined to well defined, north-northwesterly oriented payshoots.

Further resources are associated with the Erosion Channel target located stratigraphically below the Nigel/Main Reef along the boundary between Sub Nigel and Spaarwater. The Erosion Channel is incised into shales of the Jeppestown Subgroup lying immediately beneath the Main Reef. The erosional feature is filled with quartzites, pyritic quartzites and conglomerates. Gold mineralisation occurs in the pyritic quartzite fill within these transgressive, laterally restricted bodies. There has been limited previous mining on the Erosion Channel.