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CAPITAL STOCK (Tables)
12 Months Ended
Jul. 31, 2014
Schedule of Valuation Assumptions Used, Share Purchase Warrants [Table Text Block]
Expected Risk Free Interest Rate   0.60%  
Expected Annual Volatility   66.34%  
Expected Contractual Life in Years   3.00  
Expected Annual Dividend Yield   0%  
Schedule of Fair Value Allocation [Table Text Block]
Fair Value of Shares $ 6,390,003  
Fair Value of Share Purchase Warrants   627,775  
Total Fair Value Before Allocation to Net Proceeds   7,017,778  
       
Gross Proceeds   7,100,003  
Share Issuance Costs   (567,880 )
Net Proceeds Received   6,532,123  
       
Relative Fair Value Allocation to:      
Shares   5,947,792  
Share Purchase Warrants   584,331  
  $ 6,532,123  
Schedule of Share Purchase Warrants, Activity [Table Text Block]
                Weighted Average  
    Number of     Weighted Average     Remaining Contractual  
    Warrants     Exercise Price     Term (Years)  
Balance, July 31, 2011   4,348,983   $ 3.57     0.79  
 Issued   1,276,280     9.36     0.75  
 Exercised   (112,451 )   3.16     1.32  
 Expired   (3,954,000 )   4.90     -  
Balance, July 31, 2012   1,558,812     4.95     1.45  
 Issued   2,600,000     2.50     5.00  
 Expired   (1,008,812 )   7.06     -  
Balance, July 31, 2013   3,150,000     2.25     4.55  
 Issued   1,859,524     2.60     3.00  
Balance, July 31, 2014   5,009,524   $ 2.38     3.08  
Schedule Stock Options, Activity [Table Text Block]
                Weighted Average  
    Number of Stock     Weighted Average     Remaining Contractual  
    Options     Exercise Price     Term (Years)  
Balance, July 31, 2011   8,579,750   $ 1.79     7.40  
     Issued   1,372,521     3.00     9.29  
     Exercised   (272,625 )   1.93     6.21  
     Forfeited   (120,375 )   3.18     9.08  
Balance, July 31, 2012   9,559,271     1.95     6.52  
     Issued   155,000     2.27     9.51  
     Exercised   (519,909 )   0.37     3.53  
     Expired   (42,673 )   5.37     -  
     Forfeited   (185,500 )   2.79     7.22  
Balance, July 31, 2013   8,966,189     2.02     5.72  
     Exercised   (713,900 )   0.41     2.75  
     Expired   (41,575 )   4.85     -  
     Forfeited   (223,500 )   3.46     5.48  
Balance, July 31, 2014   7,987,214   $ 2.10     4.97  
Schedule of Share Transaction, Activity [Table Text Block]
      Common       Value per Share            
  Period / Description   Shares Issued     Low     High       Issuance Value    
Balance, July 31, 2011   73,487,337                    
     Equity Financing   6,284,770   $ 3.60   $ 3.60   $ 20,968,743  
     Mineral Property Acquisition   4,520,669     2.29     3.90     15,957,832  
     Options Exercised (1)   191,872     0.33     3.72     198,728  
     Database Acquisition   159,236     3.21     3.21     511,148  
     Settlement of Convertible Debentures   128,508     3.18     3.96     699,340  
     Warrants Exercised   112,451     3.10     4.25     355,392  
     Service Agreements   50,000     2.95     4.02     167,374  
     Settlement of Accounts Payable   40,312     3.93     3.93     158,426  
Balance, July 31, 2012   84,975,155                    
     Debt Financing   407,239     2.35     2.35     1,065,400  
     Options Exercised (2)   459,891     0.33     0.45     46,464  
     Service Agreements   60,000     2.00     2.00     120,000  
     Everest Settlement Agreement   55,000     3.54     3.54     194,700  
     Yuty Settlement Agreement   75,000     2.54     2.54     190,500  
Balance, July 31, 2013   86,032,285                    
     Equity Financing   3,380,954     1.76     1.76     5,947,792  
     Extension Fees for Debt Amendment   100,000     1.74     1.74     174,347  
     Annual Fee Shares for Debt Facility   99,755     1.71     1.71     170,581  
     Bonus Adjustment Shares for Debt Facility   187,079     1.77     1.77     331,130  
     Service Agreements   635,303     1.06     2.41     1,101,932  
     Options Exercised (3)   470,492     0.33     0.45     27,401  
     Share Bonuses   30,386     1.81     1.81     55,000  
     Advance Royalty for Workman Creek   30,304     1.15     1.15     34,850  
Balance, July 31, 2014   90,966,558                    
Schedule of Options Outstanding and Exerciseable [Table Text Block]
    Options Outstanding     Options Exercisable  
Range of Exercise Prices   Outstanding at     Weighted Average     Exercisable at     Weighted Average  
    July 31, 2014     Exercise Price     July 31, 2014     Exercise Price  
$0.33 to $0.70   2,001,191   $ 0.41     2,001,191   $ 0.41  
$0.71 to $2.45   3,790,250     2.37     3,770,250     2.37  
$2.46 to $5.90 (1)   2,195,773     3.19     2,192,440     3.19  
    7,987,214   $ 2.10     7,963,881   $ 2.10  
Schedule of Stock-Based Compensation Expense [Table Text Block]
    Year Ended July 31,  
    2014     2013     2012  
Stock-Based Consulting Fees                  
     Common stock issued for consulting services $ 1,101,932   $ 120,000   $ 167,374  
     Common stock issued for Yuty Settlement Agreement   -     190,500     -  
     Options issued to consultants   74,992     297,400     763,848  
    1,176,924     607,900     931,222  
Stock-Based Management Fees                  
     Common stock issued for bonuses   55,000     -     -  
     Options issued to management   -     -     834,219  
    55,000     -     834,219  
Stock-Based Wages and Benefits                  
     Options issued to employees   82,321     407,887     1,144,062  
    82,321     407,887     1,144,062  
                   
Stock-based compensation charged to inventory   (4,795 )   (53,872 )   (166,813 )
  $ 1,309,450   $ 961,915   $ 2,742,690