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8. Mineral Properties: Schedule of mineral properties (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Details      
Mineral Properties 1 $ 288,365njmc_MineralProperties1   $ 288,365njmc_MineralProperties1
Mineral Properties 2 250,000njmc_MineralProperties2   250,000njmc_MineralProperties2
Mineral Properties 3 25,500njmc_MineralProperties3   25,500njmc_MineralProperties3
Mineral Properties 4 5,000njmc_MineralProperties4   5,000njmc_MineralProperties4
Mineral properties amortization (11,407)njmc_MineralPropertiesAmortization (11,407)njmc_MineralPropertiesAmortization  
Mineral properties net $ 557,458njmc_MineralPropertiesNet1   $ 557,458njmc_MineralPropertiesNet1