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MINERAL RIGHTS AND PROPERTIES (Tables)
6 Months Ended
Jan. 31, 2013
Schedule of Mineral Rights and Property Acquisition Costs [Table Text Block]
    January 31, 2013     July 31, 2012  
Mineral Rights and Properties, Unproven            
 Palangana Mine $ 7,045,457   $ 6,610,453  
 Goliad Project   8,689,127     8,689,127  
 Burke Hollow Project   1,313,250     1,313,250  
 Channen Project   428,164     428,164  
 Salvo Project   363,645     363,645  
 Nichols Project   154,774     154,774  
 Welder Project   182,500     -  
 Anderson Project   9,154,268     9,154,268  
 Workman Creek Project   1,287,158     1,187,158  
 Los Cuatros Project   257,250     257,250  
 Slick Rock Project   163,213     163,213  
 Todilto Project   166,720     166,720  
 Yuty Project   11,947,144     11,947,144  
 Coronel Oviedo Project   1,133,412     1,133,412  
 Other Property Acquisitions   868,608     857,119  
    43,154,690     42,425,697  
Accumulated Depletion   (1,586,402 )   (1,057,495 )
    41,568,288     41,368,202  
             
Databases   2,345,038     2,345,038  
Accumulated Amortization   (1,550,581 )   (1,374,484 )
    794,457     970,554  
             
Land Use Agreements   375,155     375,155  
Accumulated Amortization   (137,749 )   (118,991 )
    237,406     256,164  
  $ 42,600,151   $ 42,594,920  
Schedule of Mineral Property Expenditures [Table Text Block]
    Three Months Ended January 31,     Six Months Ended January 31,  
    2013     2012     2013     2012  
Mineral Property Expenditures                        
 Palangana Mine $ 1,144,391   $ 2,531,871   $ 2,968,254   $ 4,367,433  
 Goliad Project   119,983     210,040     223,985     306,978  
 Burke Hollow Project   218,900     -     1,321,833     -  
 Channen Project   84,547     -     775,808     -  
 Salvo Project   165     448,922     18,026     553,499  
 Nichols Project   -     -     13,635     150,000  
 Anderson Project   202     34,435     74,924     153,893  
 Workman Creek Project   1,704     7,389     32,640     7,389  
 Slick Rock Project   31,842     1,147     86,852     13,719  
 Yuty Project   16,689     -     107,960     -  
 Coronel Oviedo Project   145,790     642,496     345,592     905,863  
 Other Mineral Property Expenditures   141,051     286,390     313,040     436,517  
  $ 1,905,264   $ 4,162,690   $ 6,282,549   $ 6,895,291