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Commitments and Contingencies - Additional Information (Details) | 12 Months Ended
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Jun. 30, 2025 USD ($) a MiningClaim | Jun. 30, 2025 CAD ($) MiningClaim | Jun. 30, 2024 USD ($)
Nevada |  |  |
Commitments And Contingencies [Line Items] |  |  |
Related party transaction, payments made | $ 50,000 |  | $ 50,000
Option Agreement | Nevada |  |  |
Commitments And Contingencies [Line Items] |  |  |
Total consideration payable | 300,000 |  |
Total consideration paid | $ 20,000 |  |
Grassy Mountain Project |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of mining fields | MiningClaim | 44 | 44 |
Area covered by mining claims | a | 589 |  |
Annual lease payment, year one | $ 40,000 |  |
Annual lease payment, year two | 40,000 |  |
Annual lease payment, thereafter | 60,000 |  |
Option to purchase mining claims, price | $ 560,000 |  |
Term of the agreement | 25 years |  |
Annual lease payment made | $ 60,000 |  |
Grassy Mountain Project | Option Agreement | Seabridge Gold Inc. |  |  |
Commitments And Contingencies [Line Items] |  |  |
Payment to purchase net profit interest |  | $ 10,000,000 |
Grassy Mountain Project | Minimum |  |  |
Commitments And Contingencies [Line Items] |  |  |
Royalty rate | 2.00% |  |
Grassy Mountain Project | Maximum |  |  |
Commitments And Contingencies [Line Items] |  |  |
Royalty rate | 4.00% |  |
Frost Project | Nevada |  |  |
Commitments And Contingencies [Line Items] |  |  |
Related party transaction, payments made | $ 100,000 |  | $ 50,000
Frost Project | Nevada |  |  |
Commitments And Contingencies [Line Items] |  |  |
Number of mining fields | MiningClaim | 40 | 40 |
Percentage of mining claim rights acquired | 100.00% | 100.00% |
Total consideration payable | $ 250,000 |  |
Percentage of Net Smelter Royalty | 2.00% | 2.00% |
Rate of right to reduce net smelter royalty by parent | 1.00% | 1.00% |
Payment to reduce NSR by parent | $ 1,000,000 |  |
Related party transaction, payments made | 100,000 |  |
Total consideration paid | $ 10,000 |  |

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