Mineral Properties (Detail) (USD $)				6 Months Ended		6 Months Ended	119 Months Ended	6 Months Ended	32 Months Ended
	Jul. 31, 2012	Jan. 31, 2012	Feb. 27, 2009	Jul. 31, 2012 Tournigan USA, Inc	Feb. 27, 2009 Tournigan USA, Inc	Jul. 31, 2012 Tournigan Energy, Ltd.[Member]	Dec. 22, 2010 Tournigan Energy, Ltd.[Member]	Jul. 31, 2012 1% NSR Royalty [Member]	Jul. 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
Restricted Investments, Noncurrent			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
Repayments of Debt							130,000
Due to Related Parties						600,000
Debt Instrument, Decrease, Forgiveness						600,000
Royalty Revenue						10,000,000		5,000,000
Royalty Expense						3,000,000
Mineral Properties, Accumulated Impairment	$ 309,500