| Document and Entity Information Document | Dec. 10, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Creation Date | Dec. 10, 2024 |
| Document Period End Date | Dec. 10, 2024 |
| Amendment Flag | false |
| Entity Registrant Name | Lion Copper and Gold Corp. |
| Entity Address, Address Line One | 143 S Nevada St. |
| Entity Address, City or Town | Yerington |
| Entity Address, State or Province | NV |
| Entity Address, Country | US |
| Entity Address, Postal Zip Code | 89447 |
| Entity Incorporation, State Country Name | A1 |
| City Area Code | 775 |
| Local Phone Number | 463-9600 |
| Entity File Number | 000-55139 |
| Entity Central Index Key | 0001339688 |
| Entity Emerging Growth Company | true |
| Entity Tax Identification Number | 98-1664106 |
| Entity Ex Transition Period | false |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
