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Equity - contributed equity - Summary of movements in ordinary share capital (Detail) - AUD ($) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 20, 2022 | Jun. 15, 2022 | Jun. 14, 2022 | Jun. 09, 2022 | Jun. 06, 2022 | Jun. 02, 2022 | May 24, 2022 | May 05, 2022 | Dec. 15, 2021 | Jun. 30, 2021 | May 21, 2021 | Apr. 28, 2021 | Mar. 15, 2021 | Mar. 02, 2021 | Oct. 26, 2020 | Oct. 12, 2020 | Aug. 28, 2020 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 37,851,000 | $ 14,125,000 | $ 14,195,000
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 273,000 | 12,972,000
Ending balance | $ 18,638,000 |  |  |  |  |  |  |  |  |  | $ 37,851,000 |  |  |  |  |  |  |  | $ 18,638,000 | $ 37,851,000 | $ 14,125,000
Contributed equity [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 132,012,209 | 94,598,369 |
Ending Balance | 138,755,376 |  |  |  |  |  |  |  |  |  | 132,012,209 |  |  |  |  |  |  |  | 138,755,376 | 132,012,209 | 94,598,369
Beginning Balance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 80,290,062 | $ 48,781,214 | $ 36,642,000
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 273,000 | 12,972,000
Ending balance | $ 84,480,249 |  |  |  |  |  |  |  |  |  | $ 80,290,062 |  |  |  |  |  |  |  | $ 84,480,249 | $ 80,290,062 | $ 48,781,214
Conversion of options [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  |  |  |  | $ 0.668 |  |  |  | $ 0.493 | $ 0.635 |  |  | $ 0.493 |  |  |
Conversion of options [member] | Contributed equity [member] | 28 August 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,000 |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,313 |
Conversion of options [member] | Contributed equity [member] | 2 March 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 391,500 |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 248,661 |
Conversion of options [member] | Contributed equity [member] | 15 March 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,000 |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,313 |
Conversion of options [member] | Contributed equity [member] | 15 December 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25,000 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,700 |  |
Institutional placement under ANREO [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.8 |  |  |  |
Institutional placement under ANREO [Member] | Contributed equity [member] | 12 October 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,525,820 |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,420,656 |
Retail placement under ANREO [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.8 |  |  |  |  |
Retail placement under ANREO [Member] | Contributed equity [member] | 26 October 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,017,075 |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,813,660 |
Share Placement [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.407 |  |  |  |  |  |  |  |
Share Placement [member] | Contributed equity [member] | 28 April 2021 {Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,037,580 |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,274,633 |
Issued on achievement of a milestone [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  |  |  |  |  |  | $ 1.421 |  |  |  |  |  |  |  |  |
Issued on achievement of a milestone [Member] | Contributed equity [member] | 21 May 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,391,865 |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,400,000 |
Share issue transaction costs [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price | $ 0 |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |  |  |
Share issue transaction costs [member] | Contributed equity [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (492,734) | $ (1,673,388) |
Conversion of Triaxial Convertible Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  |  |  | $ 0.25 |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Triaxial Convertible Note [Member] | Contributed equity [member] | 5 May 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,855,357 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 464,000 |  |
ATM issue of shares No. 1 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  |  | $ 0.826 |  |  |  |  |  |  |  |  |  |  |  |  |
ATM issue of shares No. 1 [Member] | Contributed equity [member] | 24 May 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,256 |  |
ATM issue of shares No. 2 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  |  | $ 0.802 |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM issue of shares No. 2 [Member] | Contributed equity [member] | 2 June 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8,025 |  |
ATM issue of shares No. 3 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  |  | $ 0.837 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM issue of shares No. 3 [Member] | Contributed equity [member] | 6 June 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 88,710 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 74,258 |  |
ATM issue of shares No. 4 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  |  | $ 0.84 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM issue of shares No. 4 [Member] | Contributed equity [member] | 9 June 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 603,500 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 507,035 |  |
ATM issue of shares No. 5 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  |  | $ 0.824 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM issue of shares No. 5 [Member] | Contributed equity [member] | 14 June 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 75,940 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 62,583 |  |
ATM issue of shares No. 6 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  |  | $ 0.83 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM issue of shares No. 6 [Member] | Contributed equity [member] | 15 June 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,661 |  |
ATM issue of shares No. 7 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price |  | $ 0.869 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
ATM issue of shares No. 7 [Member] | Contributed equity [member] | 20 June 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of classes of share capital [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,072,660 |  |
Issue of shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,540,403 |  |

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- Definition The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 79 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_79_a_iv&doctype=Standard -URIDate 2021-03-24 + Details
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