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Mining giant Newmont dabbles in Namibia

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Part of the Damara Gold belt close to Karibib in Namibia when WhyAfrica visited Osino Resources’ Twin Hills gold project earlier this year. Image credit: Leon Louw for WhyAfrica

Mining giant Newmont dabbles in Namibia

Global mining giant Newmont Corporation had a good look at Osino Resources’ gold deposits in Namibia and depending on results from its recent geochemical orientation program, Newmont will consider undertaking a joint exploration programme with Osino on its recently acquired Sandveld and Otjiwarongo Licences.

Newmont completed a geochemical orientation program in October to test their proprietary Deep Sensing Geochemistry (DSG) technique over known covered mineralisation at Osino Resources’ Twin Hills gold project close to Karibib in Namibia.

The Twin Hills gold deposit (comprising the distinct Clouds, Bulge/Twin Hill Central and Twin Hills West cluster of gold, deposits is covered by calcrete from one metre thick at Clouds, and up to 40m thick at Twin Hills West and, in addition, the calcrete is often covered by a layer of wind-blown (Kalahari) red sand ranging from a few centimetres to two metres thick.

Newmont’s DSG technique was developed for the primary purpose of recognising blind mineralisation under transported cover or in otherwise challenging surface geochemical environments.

It was derived from the company’s proprietary BLEG (Bulk Leach Extractable Gold) stream sediment techniques. Using BLEG, Newmont has been able to screen large tracts of prospective land in a quick and cost-effective manner. Newmont has used this technique in several geological terranes and it has led to the discovery of economic ore deposits.

Newmont has completed a series of DSG soil sampling traverses across the Twin Hills deposit to collect surface sand and sheet wash covering the calcrete.

Newmont’s in-house laboratory is currently processing and analysing these samples to measure ultra-low concentrations of gold and associated metals, with a view to determining its effectiveness in the Namibian covered terranes. Results are expected in Q1, 2023.

Wind-blown sand remains unexplored (Mining giant Newmont dabbles in Namibia) 

According to Dave Underwood, Osino’s Vice President, Exploration the Damara Orogenic Belt in Namibia is highly prospective terrane hosting four currently known gold deposits including Navachab (QKR Namibia), Otjikoto (B2Gold Corp.), Twin Hills and Ondundu (both owned by Osino).

“However, a large part of the belt is covered by calcrete and/or wind-blown sand and remains completely unexplored.

These covered areas had not been effectively explored until Osino started a new wave of regional exploration in Namibia by introducing sampling and analysis techniques which ‘see through’ calcrete and sand, covering the prospective rocks beneath,” says Underwood.

Newmont has recently been building a technical relationship with Osino and pursuant to that has sent in a specialist geochemical exploration team to carry out orientation work at Twin Hills.

Underwood says that Osino see this as recognition of the prospectivity of the Damara Belt to host major gold deposits as well as confirmation of Osino’s position as the leading gold exploration company and partner of choice in Namibia.

“After completing a holistic target generation exercise over the north-eastern strike extent of the Karibib fault zone (which hosts Osino’s 3.1moz Twin Hills gold deposit) we have now staked the entire area covering the eastern extension of the Karibib fault in a very large contiguous land package – the Sandveld license block. We look forward to starting work in this area, which is entirely covered by calcrete and has never seen any effective exploration, suggesting significant blue-sky potential,” says Underwood.

The eastern extension of Karibib (Mining giant Newmont dabbles in Namibia)

Osino has recently staked a large new land package approximately 100km to the east of Twin Hills. This contiguous block of licences has a combined area of 2681km2 and covers what Osino believes to be the eastern extension of the fertile Karibib Fault which is host to Osino’s Twin Hills discovery (3.1 million ounces [moz] in Indicated and Inferred Resources).

The package also covers the Mon Repos Thrust which is believed to be instrumental in the formation of the Navachab Gold Mine (estimated 8moz historical gold resource comprising approximately 2moz in past production and approximately 6moz in remaining total endowment).

Most of the Sandveld package is covered by calcrete and wind-blown sand which has rendered traditional exploration methods ineffective and the entire area completely unexplored. Surface work is planned to start in early 2023 using a combination of in-house sample collection and analysis techniques.

Mining giant Newmont dabbles in Namibia

WhyAfrica visited Osino Resources’ Twin Hills project in July in August this year as part of its annual WhyAfrica Road Trip.

WhyAfrica reports about, and publishes newsletters, magazines and research reports about natural resources and the primary sectors of African economies, and the infrastructure, equipment and engineering methods needed to extract and utilise these resources in an efficient, responsible, sustainable, ethic and environmentally friendly way, so that it will benefit the people of Africa.

Furthermore, WhyAfrica promotes Africa as an investment and travel destination, analyses the continent’s business environment and investment opportunities, and reports on how the political economies of African countries affect their development.         

WhyAfrica provides you with business intelligence that matters. Africa is our business, and we want it to be yours too. To subscribe to WhyAfrica’s free newsletter or digital magazine, and for more news on Africa, visit the website at www.whyafrica.co.za or send a direct message. WhyAfrica launched its first ever digital magazine in November 2021.

The company will undertake its annual road trip through South Africa, Zimbabwe, Zambia, the DRC, Malawi, Tanzania and Kenya in 2023. If you are interested in sponsorship or advertising opportunities, please contact me at leon@whyafrica.co.za. We have a wide range of different packages and combo deals to give your company the greatest exposure to a rapidly growing, African readership.  

The 2022 Southern Africa Road trip issue of WhyAfrica’s magazine is now available in print. The magazine was distributed in South Africa, Namibia, Zambia, Zimbabwe, and Botswana during WhyAfrica’s 2022 Southern Africa Overland Road Trip, the company’s new and innovative platform. WhyAfrica has expanded its product range and now offers its readers, followers, advertisers, subscribers and partners the following:

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Mining giant Newmont dabbles in Namibia


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