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7. Mineral Properties: Schedule of Mineral Properties (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Details |  |
Mineral Properties 1 | $ 288,365 njmc_MineralProperties1 | $ 271,340 njmc_MineralProperties1
Mineral Properties 2 | 250,000 njmc_MineralProperties2 | 250,000 njmc_MineralProperties2
Mineral Properties 3 | 25,500 njmc_MineralProperties3 | 25,500 njmc_MineralProperties3
Mineral Properties 4 | 5,000 njmc_MineralProperties4 | 5,000 njmc_MineralProperties4
Mineral properties amortization | (11,407)njmc_MineralPropertiesAmortization | (11,407)njmc_MineralPropertiesAmortization
Mineral properties net | $ 557,458 njmc_MineralPropertiesNet1 | $ 540,433 njmc_MineralPropertiesNet1

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- Definition Mineral Properties 1 + References No definition available. + Details
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Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Mineral Properties 2 + References No definition available. + Details
Name: | njmc_MineralProperties2
Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Mineral Properties 3 + References No definition available. + Details
Name: | njmc_MineralProperties3
Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Mineral Properties 4 + References No definition available. + Details
Name: | njmc_MineralProperties4
Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Mineral properties amortization + References No definition available. + Details
Name: | njmc_MineralPropertiesAmortization
Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Mineral properties, net + References No definition available. + Details
Name: | njmc_MineralPropertiesNet1
Namespace Prefix: | njmc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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