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MINERAL RIGHTS AND PROPERTIES (Tables)
9 Months Ended
Apr. 30, 2014
Schedule of Mineral Rights and Property Acquisition Costs [Table Text Block]
    April 30, 2014     July 31, 2013  
Mineral Rights and Properties, Unproven            
 Palangana Mine $ 6,664,260   $ 7,045,457  
 Goliad Project   8,689,127     8,689,127  
 Burke Hollow Project   1,313,250     1,313,250  
 Channen Project   -     428,164  
 Salvo Project   364,710     363,645  
 Nichols Project   154,774     154,774  
 Anderson Project   9,154,268     9,154,268  
 Workman Creek Project   1,372,008     1,287,158  
 Los Cuatros Project   257,250     257,250  
 Slick Rock Project   171,271     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   1,080,934     1,067,148  
    42,469,128     43,170,730  
Accumulated Depletion   (3,209,016 )   (2,278,053 )
    39,260,112     40,892,677  
             
Databases   2,405,038     2,345,038  
Accumulated Amortization   (1,867,341 )   (1,685,011 )
    537,697     660,027  
             
Land Use Agreements   390,155     390,155  
Accumulated Amortization   (186,266 )   (157,007 )
    203,889     233,148  
  $ 40,001,698   $ 41,785,852  
Schedule of Mineral Property Expenditures [Table Text Block]
    Three Months Ended April 30,     Nine Months Ended April 30,  
    2014     2013     2014     2013  
Mineral Property Expenditures                        
 Palangana Mine $ 668,307   $ 756,414   $ 1,975,766   $ 3,724,668  
 Goliad Project   419,278     145,390     1,591,309     369,375  
 Burke Hollow Project   750,907     572,578     1,348,976     1,894,411  
 Channen Project   219     29,983     728     805,791  
 Anderson Project   45,290     -     172,975     74,924  
 Workman Creek Project   1,440     -     31,651     32,640  
 Slick Rock Project   10,309     29,910     61,320     116,762  
 Yuty Project   148,248     26,831     228,997     134,791  
 Coronel Oviedo Project   457,527     88,210     601,723     433,802  
 Other Mineral Property Expenditures   237,824     177,831     898,067     522,532  
  $ 2,739,349   $ 1,827,147   $ 6,911,512   $ 8,109,696