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Contingent Liabilities (Details) - Kabanga Nickel Company Ltd [Member] | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2021 TZS (Tsh) | Dec. 31, 2020 USD ($) | Dec. 31, 2020 TZS (Tsh) | Jan. 31, 2021 TZS (Tsh)
Contingent Liabilities [Line Items] |  |  |  |  |
Bank balances |  |  |  |  | Tsh 823,400,321
Amount of tax in dispute | $ 167,716 | Tsh 421,811,314 | $ 3,350,393 | Tsh 8,426,336,706 |

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