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Mineral Properties and development costs (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Nov. 30, 2021 | Nov. 30, 2020
Mineral properties and development costs, Ending Balance | $ 119 |
Alaska, USA |  |
Assets derecognized note 4(a) |  | $ (30,631)
Acquisition costs | 119 |
Mineral properties and development costs, Ending Balance | 119 |
Ambler | Alaska, USA |  |
Assets derecognized note 4(a) |  | (26,631)
Bornite | Alaska, USA |  |
Assets derecognized note 4(a) |  | $ (4,000)
West Kobuk | Alaska, USA |  |
Acquisition costs | 58 |
Mineral properties and development costs, Ending Balance | 58 |
East Ambler | Alaska, USA |  |
Acquisition costs | 61 |
Mineral properties and development costs, Ending Balance | $ 61 |

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- Definition Amount of derecognition mineral properties. + References No definition available. + Details
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- Definition The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=123726172&loc=d3e511914-122862 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10(c)(3)(ii)(A)) -URI http://asc.fasb.org/extlink&oid=123726172&loc=d3e511914-122862 + Details
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- Definition Mineral properties, net of adjustments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=96866604&loc=d3e64895-109465 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Details
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- Details
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- Details
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