Mineral Properties and Exploration Expenses (Narrative) (Details)							0 Months Ended				0 Months Ended
	Dec. 31, 2012 ha properties	Dec. 31, 2012 DNPM Processes 850.684/06 [Member] ha	Sep. 13, 2006 DNPM Processes 850.684/06 [Member] Exploration Claims Submitted [Member] ha	Dec. 31, 2012 DNPM Processes 850.782/05 [Member] ha	Sep. 28, 2009 DNPM Processes 850.782/05 [Member] ha	Sep. 27, 2009 DNPM Processes 850.782/05 [Member] ha	Nov. 28, 2006 DNPM Processes 850.782/05 [Member] Mineral Rights Granted [Member]	Dec. 31, 2012 DNPM Processes 850.012/06 [Member] ha	Dec. 31, 2012 DNPM Processes 850.013/06 [Member] ha	Dec. 31, 2012 DNPM Process 850.119/06 [Member] ha	Sep. 15, 2006 DNPM Process 859.587/95 [Member]	Dec. 31, 2012 DNPM Process 859.587/95 [Member] ha
Mineral Properties [Line Items]
Number of properties	6
Exploration permit covering area	16,590	1,985.91	4,914.18	6,656.20	5,651.98	6,756		1,128.08	750.55	1,068.72		5,000.00
Exploration permit granted period							3 years				3 years