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Note 18 - Exploration and Evaluation Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Statement Line Items [Line Items] |
Disclosure of detailed information about exploration and evaluation assets [text block] |
|  | Glen Hume |  |  | Connemara North |  |  | GG |  |  | Eagle Vulture, Mascot & Penzance |  |  | Sabiwa |  |  | Total |
Balance at January 1, 2019 |  |  | – |  |  |  | – |  |  |  | 3,347 |  |  |  | 3,344 |  |  |  | 276 |  |  |  | 6,967 |
- Consumables and drilling |  |  | – |  |  |  | – |  |  |  | 6 |  |  |  | (3 | ) |  |  | – |  |  |  | 3 |
- Contractor |  |  | – |  |  |  | – |  |  |  | 36 |  |  |  | 57 |  |  |  | – |  |  |  | 93 |
- Labour |  |  | – |  |  |  | – |  |  |  | 32 |  |  |  | 8 |  |  |  | – |  |  |  | 40 |
- Power |  |  | – |  |  |  | – |  |  |  | 20 |  |  |  | 10 |  |  |  | 6 |  |  |  | 36 |
Balance at December 31, 2019 |  |  | – |  |  |  | – |  |  |  | 3,441 |  |  |  | 3,416 |  |  |  | 282 |  |  |  | 7,139 |
Balance at January 1, 2020 |  |  | – |  |  |  | – |  |  |  | 3,441 |  |  |  | 3,416 |  |  |  | 282 |  |  |  | 7,139 |
- Option payments |  |  | 2,500 |  |  |  | 300 |  |  |  | – |  |  |  | – |  |  |  | – |  |  |  | 2,800 |
- Consumables and drilling |  |  | 161 |  |  |  | – |  |  |  | 28 |  |  |  | – |  |  |  | – |  |  |  | 189 |
- Labour |  |  | – |  |  |  | – |  |  |  | 35 |  |  |  | 11 |  |  |  | – |  |  |  | 46 |
- Power |  |  | – |  |  |  | – |  |  |  | 19 |  |  |  | 3 |  |  |  | 2 |  |  |  | 24 |
Reallocate to assets held for sale (note 21.1) ~ |  |  | – |  |  |  | – |  |  |  | – |  |  |  | (500 | ) |  |  | – |  |  |  | (500 | )
Impairment ~ |  |  | – |  |  |  | – |  |  |  | – |  |  |  | (2,930 | ) |  |  | – |  |  |  | (2,930 | )
Balance at December 31, 2020 |  |  | 2,661 |  |  |  | 300 |  |  |  | 3,523 |  |  |  | – |  |  |  | 284 |  |  |  | 6,768 |

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- Definition The disclosure of detailed information about exploration and evaluation assets. + References No definition available. + Details
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Namespace Prefix: | cmcl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | cmcl_
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Balance Type: | na
Period Type: | duration