| Cover | Aug. 24, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 24, 2021 |
| Entity File Number | 000-54658 |
| Entity Registrant Name | MAGELLAN GOLD CORPORATION |
| Entity Central Index Key | 0001515317 |
| Entity Tax Identification Number | 27-3566922 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 602 Cedar St. |
| Entity Address, Address Line Two | Ste. 205 |
| Entity Address, City or Town | Wallace |
| Entity Address, State or Province | ID |
| Entity Address, Postal Zip Code | 83873 |
| City Area Code | 707 |
| Local Phone Number | 291-6198 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
