| Cover | Feb. 20, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 20, 2025 |
| Entity File Number | 0-53482 |
| Entity Registrant Name | TEXAS MINERAL RESOURCES CORP. |
| Entity Central Index Key | 0001445942 |
| Entity Tax Identification Number | 87-0294969 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 539 El Paso St. |
| Entity Address, City or Town | Sierra Blanca, |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 79851 |
| City Area Code | (915) |
| Local Phone Number | 369-2133 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
