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Equity - Reserves and Retained Earnings - Summary of Equity Reserves and Retained Earnings (Detail) - AUD ($)
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Reserves      
Options issued reserve $ 19,116,205 $ 19,116,205  
Conversion feature of convertible note reserve 2,589,486 5,178,972 $ 10,357,944
Foreign currency translation reserve 3,844,507 252,005  
Share-based payment reserve 4,577,520 4,457,636 3,843,045
Ending balance 30,127,718 29,004,818  
Movement in options issued reserve were as follows:      
Opening balance 19,116,205    
Ending balance   19,116,205  
Movements in conversion feature of convertible note reserve:      
Opening balance 5,178,972 10,357,944  
Transfer to accumulated losses on conversion of Convertible Notes (2,006,280) (4,012,560)  
Transfer to contributed equity on conversion of Convertible Notes (583,206) (1,166,412)  
Ending balance 2,589,486 5,178,972 10,357,944
Movement in foreign currency translation reserve were as follows:      
Opening balance 252,005 1,174,332  
Currency translation differences arising during the year 3,592,502 (922,327)  
Ending balance 3,844,507 252,005 1,174,332
Movement in share-based payment reserve were as follows:      
Opening balance 4,457,636 3,843,045  
Option and Performance rights expensed during the year 2,001,572 1,486,841  
Exercise of vested performance rights transferred to contributed equity (1,881,688) (872,250)  
Ending balance 4,577,520 4,457,636 3,843,045
Movement in accumulated losses were as follows:      
Opening balance (302,335,209) (274,642,220)  
Net loss for the year (39,896,348) (32,210,826) (29,902,624)
Conversion of Convertible Notes 2,301,025 4,517,837  
Exercise of warrants 0 0  
Ending balance $ (339,930,532) $ (302,335,209) $ (274,642,220)