XML 57 R34.htm IDEA: XBRL DOCUMENT
v3.21.1

Note 28 - Provisions | 12 Months Ended
--- | ---
Dec. 31, 2020
Statement Line Items [Line Items] |
Disclosure of provisions [text block] |
28 | Provisions
Site restoration Site restoration relates to the estimated cost of closing down the mines and represents the site and environmental restoration costs, estimated to be paid throughout the period up until closure due to areas of environmental disturbance present at the reporting date as a result of mining activities. Regarding Blanket Mine the costs of site restoration are discounted based on the estimated life of mine. Site restoration costs at Blanket Mine are capitalised to mineral properties depreciated at initial recognition and amortised systematically over the estimated life of the mine for costs relating to the decommissioning of property, plant and equipment.
Reconciliation of site restoration provision |  | 2020 |  |  | 2019 |
Balance January 1 |  |  | 3,346 |  |  |  | 3,309 |
Unwinding of discount |  |  | 2 |  |  |  | 20 |
Change in estimate - adjustment capitalised in Property, plant and equipment |  |  | 219 |  |  |  | 17 |
Balance December 31 |  |  | 3,567 |  |  |  | 3,346 |
The discount rates currently applied in calculating the net present value of the Blanket Mine provision is 1.45% ( 2019: 2.31%, January 1, 2019: 2.95% ), based on a risk-free rate and cash flows estimated at an average 2.05% inflation ( 2019: 2.27%, January 1, 2019: 2.13% ). The gross rehabilitation costs, before discounting, amounted to $3,389 ( 2019: $3,364, January 1, 2019: $3,604 ) for Blanket Mine as at December 31, 2020.

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

X
- Definition The disclosure of provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_10_e&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DisclosureOfProvisionsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration