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Represents the monetary amount of Investment in equity security received for mineral interest, during the indicated time period.

No definition available.

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Represents the Investment in equity security received for mineral interest, shares (number of shares), during the indicated time period.

No definition available.

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of realized and unrealized gain (loss) on investment.

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Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
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Cash received on stock transaction after deduction of issuance costs.

No definition available.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

No definition available.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

No definition available.

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Data Type:	num:perShareItemType
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- References

No definition available.

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Amount of unrealized gain (loss) on investment.

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