The North Mara gold deposits are situated in the Mara Musoma greenstone belt. There are several types of gold mineralisation including shear-zone-related quartz vein and disseminated gold.
Life and reserves
In response to the changed gold price environment the life-of-mine is now ten years due to the removal of Gokona Stage 4 and Nyabirama Stage 5 from the mine plan. Further optimisation of the mine plan is ongoing and may result in further changes to the life depending on the availability and cost of land required to support mining activities. The changes to the mine plan will result in a proportion of reserves being reclassified to resource. 2012 proven and probable gold reserves were 3,012,000 ounces.
The North Mara gold mine is located in northeast Tanzania in the Tarime district of the Mara region. It is around 100 km east of Lake Victoria and 20 km south of the Kenyan border.
The North Mara process plant has the capacity to process an average of 8,000 tonnes of ore per day, (or c. 2.8 million tonnes per year) and produces both doré.
The site is served by the national road system and there is an airstrip 7 km from the processing plant.
The annual average temperature ranges from 16° – 29°C. Average annual rainfall for the region is 1,300mm.
North Mara is a high grade open pit mine consisting of three open pit deposits: Nyabirama, Gokona and Nyabigena.