URANIUM in AFRICA: Current Situation, Prospects & Challenges

URANIUM in AFRICA: Current Situation, Prospects & Challenges

URANIUM IN AFRICA: Current Situation, Prospects & Challenges by Gabi Schneider, Namibian Uranium Institute Promoting the Namibian Uranium Brand CURRENT SITUATION Current Production: Namibia Exploration: Niger Algeria South Africa Botswana Central African Republic Past Production: Guinea DRC Equatorial Guinea Gabon Mali Malawi Mauritania Morocco Nigeria Tanzania Zambia Zimbabwe Africa has considerable mineral deposits, including uranium Exploration and mine development is proceeding in countries which have not hitherto supplied uranium Gabon has been a significant uranium supplier in the past Source: WNA Promoting the Namibian Uranium Brand CURRENT SITUATION 2019 Production 2019 Consumption Other 16.5% Other USA Niger 5.6% Kazakhstan 26.8% 28.1% Namibia 10.2% 42.5% Korea 6.7% Australia China Russia 15.1% 12.3% Canada France 9.3% 12.9% 14.0% The other 16.5 % are produced by The other 26.8 % are consumed Russia, Uzbekistan, China, USA, mainly by Belgium, Canada, Finland, Ukraine, South Africa (0.6%), India, Germany, India, Japan, Spain, and Pakistan Sweden, Ukraine, and the UK Promoting the Namibian Uranium Brand CURRENT SITUATION Source: WNA Promoting the Namibian Uranium Brand NAMIBIA Namibia has significant uranium mines capable of providing 10% of world mining output Its first commercial uranium mine began operating in 1976 Deposit Type Resources Measured & Indicated Inferred Rössing Alaskite 239 926 tU in 0.02% ore 26 154 tU in 0.02% ore Husab Alaskite 143 740 tU in 0.048% ore 40 130 tU in 0.04% ore Langer Heinrich Calcrete 34 785 tU in 0.042% ore 3 454 tU in 0.04% ore Trekkopje Calcrete 26 000 tU in 0.01% ore Norasa Alaskite 39 700 tU in 0.0167% ore 8 500 tU in 0.014% ore Etango Alaskite 63 000 tU in 0.016% ore 24 000 tU in 0.016% ore Omahola Alaskite 10 370 tU in 0.041% ore 7 000 tU in 0.043% ore Tumas Calcrete 1 542 tU in 0.028% ore 20 900 tU in 0.03% ore Tubas Sand 10 900 tU in 0.0125% ore Marenica Calcrete 22 040 tU in 0.01% ore 22 039 tU in 0.01% ore 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 Rössing 3449 3519 3083 2641 2289 2043 1308 1057 1569 1790 2102 2449 Husab 192 1140 3028 4010 Langer Heinrich 919 1108 1419 1437 1960 2098 1947 1937 1893 1294 394 [tU] Trekkopje 251 186 Total 4368 4627 4502 4078 4500 4327 3255 2994 3654 4224 5524 6459 Source: NUA, WNA Promoting the Namibian Uranium Brand NIGER Niger has two significant uranium mines providing about 5% of world mining output from Africa's highest-grade uranium ores Niger's first commercial uranium mine began operating in 1971 Deposit Proven, Probable & Resources Type Measured Reserves Indicated Inferred SOMAIR Sandstone 3 205 tU in 0.15% ore 30 042 tU in 0.143% ore 22 653 tU in 0.164% ore Arlit Sandstone 20 403 tU in 0.159% ore COMINAK Sandstone 8 702 tU in 0.327% ore 942 tU in 0.277% ore Imouraren Sandstone 213 722 tU in 0.07% ore 62 784 tU in 0.058% ore 2 879 tU in 0.066% ore SOMINA Sandstone 15 600 tU in 0.2% ore Madaouela Sandstone 12 084 tU in 0.1% ore 30 600 tU in 0.12% ore 10 680 tU in 0.11% ore Dasa Sandstone 25 000 tU in 0.26% ore 18 600 tU in 0.22% ore 2011 2012 2013 2014 2015 2016 2017 2018 2019 SOMAIR 2726 3065 2730 2331 2509 2164 2116 1783 COMINAK 1075 1506 1508 1501 1607 1313 1332 1128 [tU] SOMINA 64 96 2990 Total 3865 4667 4528 4057 4116 3477 3449 2911 2983 SOMAIR = Arlit/Arlette, Tamou, Tagora, Artois COMINAK = Akouta, Akola, Afasto/Ebba SOMINA = Azelik Source: WNA Promoting the Namibian Uranium Brand SOUTH AFRICA Uranium production in South Africa has generally been a by-product of gold mining Sedimentary uranium occurrences are known from the Karoo Basin Deposit Resources Type Measured & Indicated Inferred Ezulwini Au Conglomerate 3 200 tU in 0.028-0.045% ore 85 tU in 0.028-0.045% ore Vaal Reef Au Conglomerate 70 520 tU in 0.035% ore Dominion Reef Au Conglomerate 55 00 tU in 0.062% ore 62 800 tU in 0.036% ore Beatrix Au Conglomerate 9 900 tU in 0.079% ore Randfontein Au Conglomerate 41 000 Ryst Kuil Sandstone 16 000 tU in 0.1% ore 2011 2012 2013 2104 2015 2016 2017 2018 2019 Ezulwini 34 69 47 67 [tU] Vaal Reef 548 465 531 504 346 423 308 Total 582 465 531 573 393 490 308 346 346 Source: WNA, Kinnaird & Nex, 2016 Promoting the Namibian Uranium Brand PAST PRODUCTION Democratic Republic of Congo Provided uranium for the Manhattan Project in the early 1940s, particularly from the Shinkolobwe mine, 25 km west of Likasi in Katanga Subsequently some uranium mining by Union Miniere, up to Independence in 1960, when the shafts were sealed and guarded About 25 000 tU were produced between 1940 and 1960 The deposit has been unofficially mined since 1997 for cobalt In 2009 French Orano’s predecessor Areva signed a uranium exploration agreement for Katanga with the government, focused on Shinkolobwe, but no development has taken place DRC ratified the Nuclear Non Proliferation Treaty in 1970 Source: WNA Promoting the Namibian Uranium Brand PAST PRODUCTION GABON Historically, uranium mining in Gabon has been closely linked with Niger due to the role of the French Atomic Energy Commission (CEA) The Mounana uranium deposits in SE Gabon were discovered in 1956 by CEA geologists and were mined from 1960 to 1999, producing nearly 28 000 tU The best known deposit is Oklo, discovered 1968, which produced over 14 000 tU The Franceville Uranium Mines Company (COMUF), formed by Cogema and the Gabon Government, undertook mining and processing Mining mostly in open pit, but also underground, from five discrete orebodies with average ore grade of 0.37% Production fluctuated from 400 to 1250 tU/yr Facilities were dismantled and the site is in the final phase of rehabilitation. The remaining resources are quoted as 5 420 tU at 0.027% (inferred) Gabon is party to the Nuclear Non-Proliferation Treaty and signed a safeguards agreement in 1979, but does not have a comprehensive safeguards treaty in force Source: WNA Promoting the Namibian Uranium Brand PAST PRODUCTION MALAWI The Kayelekera deposit in northern Malawi, west of Karonga was discovered in the 1980s Australian Paladin Energy acquired the deposit in 1997, and developed it at a cost of US$ 220 million After producing 4 190 tU, the mine was placed on care and maintenance in May 2014 In 2020 Paladin Energy sold its 85% interest in the mine to Lily Resources, 15% of the shares are held by the Malawian Government In 2020 the mine announced an increase in JORC-compliant resources to 1 580 tU measured resources, run of mine stockpile of 10 445 tU indicated, and 2 428 tU inferred, including a low-grade stockpile The average overall grade is 0.053%U and the figures assume a 0.026%U cut-off The Livingstonia uranium deposit is in similar geology some 100 km SE of Kayelekera, but remains as yet unquantified Source: WNA Promoting the Namibian Uranium Brand EXPLORATION ALGERIA Uranium exploration in the 1970s resulted in the discovery of the Tahaggart deposit Reasonably assured resources of 26 000 tU (< $80/kg) are reported BOTSWANA The Letlhakane project in NE Botswana comprises the Gojwane and Serule orebodies, and the Gorgon, Gorgon South, Mokobesi, and Kraken prospects JORC-compliant resources are 33 000 tU at 0.0167%U indicated and 108 000 tU at 0.0172%U inferred, all at 100 ppm cut-off. The carnotite-calcrete ore is amenable to shallow open-pit mining with heap leach which could produce 1 150 tU/a over 18 years Australian A-Cap Resources received a 22-year mining license in 2016 Construction was planned for 2018, but has been deferred Australian Impact Minerals explored deposits in SE Botswana including Lekobolo, Shoshong and Ikongwe In 2014 Impact put its uranium exploration on hold Source: WNA Promoting the Namibian Uranium Brand EXPLORATION CENTRAL AFRICAN REPUBLIC French Orano’s predecessor Areva proposed to develop the Bakouma project in E CAR at a cost of $ 200 million Open pit mining with 1 200 tU/a from ore grading up to 1.27 % U After a test phase from 2010, full production was planned for 2014-15 Low uranium prices and metallurgical difficulties have delayed the project after an expenditure of €107 million The continental phosphate deposit is unusual for its uranium content Inferred resources are 36 475 tU at 0.03% The CAR government holds a 10% free carried share GUINEA Forte Energy NL, formerly Murchison United NL , encountered good mineralization in 2007 at its Firawa prospect, 600 km east of the Conakry, 7 400 tU JORC-compliant inferred resources were announced, with 1-2% rare earth elements present However, the leases lapsed in 2015 Australian Toro Energy and UK Contico also hold exploration licences Source: WNA Promoting the Namibian Uranium Brand EXPLORATION EQUATORIAL GUINEA Government has commenced airborne geophysical surveys to locate uranium mineralization, and has launched a new mining code MALI The Falea uranium deposit , 250 km west of Bamako, was discovered in the 1970s and is currently explored by Canadian GoviEx Uranium Uranium can be mined underground from the mineralised sandstones as a by-product with copper and silver utilising radiometric sorting JORC compliant indicated resources are 8 500 tU at 0.1 % U and inferred resources of 6 200 tU at 0.06 % U A pre-feasibility study is envisaged after 2020 French Orano’s predecessor Areva was exploring the Saraya East uranium deposit, 80 km from Falea, in the past Source: WNA Promoting the Namibian Uranium Brand EXPLORATION MAURETANIA Australian Aura Energy’s Tiris project in the N of the country in the Sahara Desert has JORC-compliant measured and indicated resources of 6 450 tU at 0.01%U, and inferred resources of 4 580 tU, with a 100 ppm cut-off This comprises shallow calcrete deposits on the Reguibat Craton.

View Full Text

Details

  • File Type
    pdf
  • Upload Time
    -
  • Content Languages
    English
  • Upload User
    Anonymous/Not logged-in
  • File Pages
    22 Page
  • File Size
    -

Download

Channel Download Status
Express Download Enable

Copyright

We respect the copyrights and intellectual property rights of all users. All uploaded documents are either original works of the uploader or authorized works of the rightful owners.

  • Not to be reproduced or distributed without explicit permission.
  • Not used for commercial purposes outside of approved use cases.
  • Not used to infringe on the rights of the original creators.
  • If you believe any content infringes your copyright, please contact us immediately.

Support

For help with questions, suggestions, or problems, please contact us