Shareholders' Equity
6 Months Ended
Feb. 28, 2014
Shareholders' Equity [Abstract]  
Shareholders' Equity
10.  
Shareholders' Equity

The Company's classes of stock are summarized as follows:
 
   
As of February 28,
   
As August 31,
 
   
2014
   
2013
 
Preferred stock, shares authorized
    10,000,000       10,000,000  
Preferred stock, par value
  $ 0.01     $ 0.01  
Preferred stock, shares issued and outstanding
 
nil
   
nil
 
Common stock, shares authorized
    100,000,000       100,000,000  
Common stock, par value
  $ 0.001     $ 0.001  
Common stock, shares issued and outstanding
    76,685,709       70,587,723  
 
Preferred Stock may be issued in series with such rights and preferences as may be determined by the Board of Directors.  Since inception, the Company has not issued any preferred shares.

Common stock issued for acquisition of mineral interests

During the six months ended February 28, 2014, the Company issued common shares in exchange for mineral property interests.  The value of each transaction was determined using the market price of the Company's common stock on the date of each transaction.
 
   
For the Six Months Ended February 28, 2014
 
Number of common shares issued for mineral property leases
    243,179  
Number of common shares issued for acquisitions
    851,857  
Total common shares issued
    1,095,036  
         
Average price per common share
  $ 9.24  
Aggregate value of shares issued (in thousands)
  $ 10,122  
 

The following table summarizes information about the Company's issued and outstanding common stock warrants as of February 28, 2014:
 
Exercise Price
Description
 
Number of Shares
 
Remaining Contractual Life (in years)
 
Exercise Price times Number of Shares (in thousands)
 
  $6.00  
Series C
    3,664,739       0.8       $21,988  
 
The following table summarizes activity for common stock warrants for the six month period ended February 28, 2014:
 
   
Number of
Warrants
   
Weighted Average
Exercise Price
 
Outstanding, August 31, 2013
    8,666,802     $ 5.92  
Granted
    -     $ -  
Exercised
    (5,002,063 )   $ 5.86  
Expired
    -     $ -  
Outstanding, February 28, 2014
    3,664,739     $ 6.00