If Abenab was the world’s vanadium giant, then Berg Aukas was its zinc powerhouse. Located about 20 kilometres east of Grootfontein, Berg Aukas became one of Namibia’s most famous zinc-lead mines, with ore grades so high that it ranked among the richest deposits ever worked in the country.
The name Berg Aukas—meaning “Mountain of Iron” in Afrikaans—first appeared in the early 20th century when prospectors traced zinc- and lead-rich gossans at the surface. Early workings began in the 1920s, but the mine only rose to prominence after systematic exploration in the 1950s revealed extensive high-grade sulphide bodies beneath the outcrop.
Developed under South African administration, Berg Aukas began large-scale operations in 1958. The mine was equipped with an underground shaft system and a processing plant, allowing it to treat ore on-site before shipping concentrates by rail to Walvis Bay for export.
Ore and grades
What set Berg Aukas apart was its extraordinary ore quality. The deposit contained zinc and lead sulphides—primarily sphalerite and galena—with exceptional grades often exceeding 20 per cent combined zinc and lead. In addition, silver added a precious-metal credit, further boosting the economy.
By the time of its closure in the late 1970s, Berg Aukas had produced around 1.5 million tonnes of ore, yielding more than 600,000 tonnes of zinc and lead metal. For its size, it was remarkably productive, and its ores were highly sought after on international markets due to their purity and high grade.
Ownership and closure
Berg Aukas was operated for most of its life by the South West Africa Company, which managed several mining ventures in Namibia during the South African administration. The mine was profitable for two decades but was ultimately a victim of its own geology.
The orebody, though extremely rich, was relatively small, and once the high-grade zones were exhausted, continued operation was no longer viable.
The mine closed in 1978, leaving behind an extensive underground network, a concentrator plant, and a small settlement that had grown around the mine. Like many mining communities in the Otavi Mountain Land, Berg Aukas was left to adapt after the departure of its economic lifeblood.
Legacy and later uses
Berg Aukas left behind more than just a mining story. After closure, its well-built infrastructure—particularly its accommodation and facilities—was repurposed.
The Namibian government later used the site as a rehabilitation centre and vocational training school. The solidly constructed mine housing and workshops proved ideal for conversion, giving Berg Aukas a second life as a place of social development.
In more recent years, exploration companies have returned to Berg Aukas, recognising that while the original orebody was mined out, remnants in pillars, lower-grade material, and tailings could still hold value. Drilling and reassessment have suggested that smaller-scale operations could extract additional resources, especially with modern processing techniques.
Significance in the Otavi Mountain Land
In the grand tapestry of the Otavi Mountain Land, Berg Aukas stands out as proof of the province’s extraordinary polymetallic endowment.
Within a short distance, world-class deposits of copper, vanadium, lead, zinc, and silver were mined at Tsumeb, Kombat, Abenab, and Berg Aukas. Each was geologically distinct, yet together they established the Otavi region as one of Africa’s richest and most diverse mineral belts.
Berg Aukas may not have operated as long as Tsumeb or Kombat, nor reached the global stature of Abenab, but its role as Namibia’s zinc stronghold secured it a special place in the country’s mining history.
Looking ahead
Today, Berg Aukas remains dormant but not forgotten. Its story continues to be told in the geology textbooks that cite its ore grades as benchmarks, in the infrastructure that found new purpose, and in the ongoing exploration that hopes to wring fresh value from its remaining resources.
One of the most notable revival efforts has come from Consolidated Copper Corp, which has included Berg Aukas within its Namibian portfolio.
The company has assessed the potential of the old mine dumps, tailings, and underground remnants, while also considering whether Berg Aukas could again form part of a regional mining hub alongside assets like the nearby Kombat and Gross Otavi deposits.
Consolidated Copper’s strategy has focused on consolidating historical properties in the Otavi Mountain Land to achieve economies of scale, with Berg Aukas seen as an essential piece of that puzzle.
In an era when zinc is increasingly essential for galvanisation and renewable technologies, and when lead and silver still command global demand, Berg Aukas could yet see renewed interest.
Whether mined again or simply remembered as one of Namibia’s richest orebodies, Berg Aukas holds its place as a cornerstone of the Otavi Mountain Land’s mining legacy.
