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Commitments and Contingencies (Narrative) (Details) (USD $)
1 Months Ended
May 31, 2012
Feb. 28, 2010
Feb. 28, 2015
Feb. 22, 2010
Right to acquire title and interest in mineral property     50.00%tjmi_MineralPropertyPercentageInterestOption  
Kiukiang [Member]        
Right to acquire title and interest in mineral property       50.00%tjmi_MineralPropertyPercentageInterestOption
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
Exploration expenditures   $ 45,000us-gaap_ExplorationExpenseMining
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
   
Shares alloted and issued upon completion of phase 1   1,000,000us-gaap_StockIssued1
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
   
Annual royalty of Net Smelter Returns   3.00%tjmi_AnnualRoyalty
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
   
Prepayment of Net Smelter Royalty   25,000tjmi_PrepaymentOfNetSmelterRoyalty
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
   
Payment to acquire right, title and interest in mineral property 20,000us-gaap_PaymentsToAcquireMineralRights
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
25,000us-gaap_PaymentsToAcquireMineralRights
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
   
Total aggregate minimum contributed exploration expenses   60,000tjmi_TotalAggregateMinimumContributedExplorationExpenses
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
   
Kiukiang [Member] | Minimum [Member]        
Exploration expenditures   15,000us-gaap_ExplorationExpenseMining
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Total aggregate minimum contributed exploration expenses   60,000tjmi_TotalAggregateMinimumContributedExplorationExpenses
/ tjmi_MineralPropertyAxis
= tjmi_KiukiangMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Right to acquire additional Kiukiang rights, title, and interests [Member]        
Right to acquire title and interest in mineral property       25.00%tjmi_MineralPropertyPercentageInterestOption
/ tjmi_MineralPropertyAxis
= tjmi_RightToAcquireAdditionalKiukiangRightsTitleAndInterestsMember
Exploration expenditures   50,000us-gaap_ExplorationExpenseMining
/ tjmi_MineralPropertyAxis
= tjmi_RightToAcquireAdditionalKiukiangRightsTitleAndInterestsMember
   
Payment to acquire right, title and interest in mineral property   $ 10,000us-gaap_PaymentsToAcquireMineralRights
/ tjmi_MineralPropertyAxis
= tjmi_RightToAcquireAdditionalKiukiangRightsTitleAndInterestsMember