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Commitments (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2014
Feb. 08, 2014
Commitments and Contingencies Disclosure [Abstract]    
Lessee Leasing Arrangements, Operating Leases, Term of Contract 20 years  
Description of Lessee Leasing Arrangements, Operating Leases (a) $17,500 payable in $5,000 cash (paid), $5,000 for a vehicle (paid by officer of the Company and included in related party payable) and $7,500 in fuel (paid); (b) $17,500 payable six months after commencement of mining operations at the Claims; (c) $17,500 payable nine months after commencement of mining operations; and (d) $17,500 payable one-year after commencement of mining operations.  
Operating Leases Future Minimum Payments Due Per Quarter $ 17,500mbmi_OperatingLeasesFutureMinimumPaymentsDuePerQuarter  
Operating Leases Future Minimum Payments Due Per Year 70,000mbmi_OperatingLeasesFutureMinimumPaymentsDuePerYear  
Operating Leases, Future Minimum Payments Due, Total 1,400,000us-gaap_OperatingLeasesFutureMinimumPaymentsDue  
Letters Of Credit Outstanding Amount Per Lot   3,000,000mbmi_LettersOfCreditOutstandingAmountPerLot
Letters of Credit Outstanding, Amount   $ 9,000,000us-gaap_LettersOfCreditOutstandingAmount