Deposits and prospects used to assess undiscovered copper resources (with reported mineral prehnite)
| Site name | Country | State or province | Development |
|---|---|---|---|
| Middle Fork | United States | Washington | Occurrence |
| Mocoa | Colombia | Putumayo | Occurrence |
| Cumay | Ecuador | Zamora-Chinchipe | Unknown |
| Assarel | Bulgaria | Pazardzhik | Producer |
| Varvarinskoe | Kazakhstan | Qostanay oblysy | Producer |
| Borly | Kazakhstan | Qaraghandy oblysy | Prospect |
| Aktogai-Aidarly | Kazakhstan | Shyghys Qazaqstan oblysy | Producer |
| Yeoval | Australia | New South Wales | Prospect |
| Spiridonovskoe | Kazakhstan | Qostanay oblysy | Occurrence |
| Salavat | Russian Federation | Respublika Bashkortostan | Occurrence |
| Yubileinoe | Kazakhstan | Aktyubinsk | Prospect |
| Assarel Group | Bulgaria | Pazardzhik | Producer |
| Site name | Country | State or province | Development |
|---|