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Note 5 - Mineral Rights and Properties (Details Textual)
3 Months Ended 6 Months Ended
Jan. 31, 2022
USD ($)
Oct. 31, 2021
USD ($)
Jan. 31, 2021
USD ($)
Jan. 31, 2022
USD ($)
shares
Jan. 31, 2021
USD ($)
Jul. 31, 2021
USD ($)
Mineral Properties, Gross $ 178,640,630     $ 178,640,630   $ 67,711,387
Stock Issued During Period, Value, for Mineral Properties 206,129 $ 219,390        
Payments to Acquire Mineral Rights       39,901 $ 80,000  
Mineral Property Expenditures 2,109,173   $ 961,257 3,765,689 1,663,018  
UEC Wyoming Portfolio [Member]            
Mineral Properties, Gross 110,413,823     110,413,823   0
Annual Property Maintenance Fees 5,000,000.0     $ 5,000,000.0    
Mineral Property Expenditures 438,784          
Diabase Project Addition [Member]            
Number of Mineral Claims       10    
Net Consideration, Mineral Resources       $ 435,420    
Stock Issued During Period, Shares, for Mineral Properties (in shares) | shares       111,864    
Stock Issued During Period, Value, for Mineral Properties       $ 425,519    
Payments to Acquire Mineral Rights       9,901    
Diabase Project [Member]            
Mineral Properties, Gross 982,358     982,358   546,938
Palangana Mine [Member]            
Mineral Properties, Gross 6,027,784     6,027,784   $ 6,027,784
Depletion, Total 0   0 0 0  
Mineral Property Expenditures $ 266,396   $ 232,866 $ 511,716 $ 431,668