Mineral Interests (Detail) (USD $)	3 Months Ended	9 Months Ended			9 Months Ended			9 Months Ended	119 Months Ended	34 Months Ended
	Dec. 15, 2009	Oct. 31, 2012	Jan. 31, 2012	Feb. 27, 2009	Oct. 31, 2012 1% NSR Royalty [Member]	Oct. 31, 2012 Tournigan USA, Inc [Member]	Feb. 27, 2009 Tournigan USA, Inc [Member]	Oct. 31, 2012 Tournigan Energy, Ltd.[Member]	Dec. 22, 2010 Tournigan Energy, Ltd.[Member]	Oct. 31, 2012 Promissory Notes [Member]
Business Acquisition, Date of Acquisition Agreement						Feb. 27, 2009
Business Acquisition, Percentage of Voting Interests Acquired							100.00%
Business Acquisition, Purchase Price Allocation, Notes Payable and Long-term Debt						$ 325,327	$ 325,327
Business Acquisition, Purchase Price Allocation, Reclamation Bonds				930,000
Business Acquisition Percentage Of Contributing Working Interest				30.00%
Business Acquisition Percentage Of Net Profits Interest				5.00%
Deposits Assets, Current		35,000	35,000
Payments of Debt Extinguishment Costs										100,000
Reclamation Bond, First Installment Due		530,000
Reclamation Bond, First Installment Due Date		Dec. 15, 2009
Reclamation Bond, Subsequent Installment Due		400,000
Reclamation Bond, Subsequent Installment Due Date		Sep. 30, 2010
Reclamation Bond, Part Payment Amount Of First Installment	100,000
Reclamation Bond, First Installment, Part Payment	100,000
Repayments of Debt									130,000
Due to Related Parties								600,000
Debt Instrument, Decrease, Forgiveness								600,000
Royalty Revenue					5,000,000			10,000,000
Royalty Expense								3,000,000
Mineral Properties, Accumulated Impairment		$ 309,500