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Note 7 - Revenue (Tables) | 12 Months Ended
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Dec. 31, 2021
Statement Line Items [Line Items] |
Revenue from gold [text block] |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Revenue |  |  | 121,329 |  |  |  | 100,002 |  |  |  | 75,826 |
Total ounces sold |  |  | 68,617 |  |  |  | 57,137 |  |  |  | 54,801 |
Work in progress and refinery |  |  | (1,141 | ) |  |  | 762 |  |  |  | 381 |
Gold produced (oz) |  |  | 67,476 |  |  |  | 57,899 |  |  |  | 55,182 |
Tonnes milled |  |  | 665,628 |  |  |  | 597,962 |  |  |  | 556,331 |
Grade |  |  | 3.36 |  |  |  | 3.21 |  |  |  | 3.31 |
Recovery |  |  | 93.9 |  |  |  | 93.8 |  |  |  | 93.4 |
Realised gold price ($/oz) |  |  | 1,766 |  |  |  | 1,749 |  |  |  | 1,382 |

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- Definition The disclosure of revenue from gold. + References No definition available. + Details
Name: | cmcl_RevenueFromGoldTextBlock
Namespace Prefix: | cmcl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | cmcl_StatementLineItems
Namespace Prefix: | cmcl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration