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Note 7 - Net Foreign Exchange Loss (Details Textual)	9 Months Ended
	Sep. 30, 2024	Sep. 27, 2024	Sep. 26, 2024	Apr. 05, 2024
Statement Line Items [Line Items]
Foreign currency allocation, percentage	75.00%
Currency, Zimbabwe Gold (ZiG) [member]
Statement Line Items [Line Items]
Closing foreign exchange rate	24.88	24.39	13.99	13.56
Currency, Zimbabwe RTGS translated to Gold (ZiG) [member]
Statement Line Items [Line Items]
Closing foreign exchange rate				2,499

X

- Definition

The percentage of proceeds to be received in foreign currency.

+ References

No definition available.

+ Details

Name:	cmcl_ForeignCurrencyAllocationPercentage
Namespace Prefix:	cmcl_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	cmcl_Statement1LineItems
Namespace Prefix:	cmcl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ClosingForeignExchangeRate
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	ifrs-full_CurrencyInWhichInformationIsDisplayedAxis=cmcl_CurrencyZimbabweGoldZiGMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CurrencyInWhichInformationIsDisplayedAxis=cmcl_CurrencyZimbabweRTGSTranslatedToGoldZiGMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: