Deposits and prospects used to assess undiscovered copper resources (with reported mineral montmorillonite)
| Site name | Country | State or province | Development |
|---|---|---|---|
| Round Top | United States | Alaska | Occurrence |
| Mazama | United States | Washington | Prospect |
| Kirwin | United States | Wyoming | Occurrence |
| Park Premier | United States | Utah | Occurrence |
| Bingham | United States | Utah | Producer |
| Ely | United States | Nevada | Occurrence |
| Bagdad | United States | Arizona | Occurrence |
| Pine Flat | United States | Arizona | Occurrence |
| Poston Butte | United States | Arizona | Occurrence |
| Ray | United States | Arizona | Producer |
| Copper Creek | United States | Arizona | Occurrence |
| Morenci-Metcalf | United States | Arizona | Producer |
| Esperanza-Sierrita | United States | Arizona | Producer |
| Twin Buttes | United States | Arizona | Occurrence |
| Johnson Camp | United States | Arizona | Producer |
| Cumobabi | Mexico | Sonora | Prospect |
| La Verde | Mexico | Michoacán | Past Producer |
| Junin | Ecuador | Imbabura | Unknown |
| San Carlos | Ecuador | Morona-Santiago | Occurrence |
| Tumi | Ecuador | Loja | Occurrence |
| Copaquire | Chile | Tarapacá | Prospect |
| Ujina | Chile | Antofagasta | Producer |
| El Abra | Chile | Antofagasta | Producer |
| Chuquicamata | Chile | Antofagasta | Producer |
| Potrerillos | Chile | Atacama | Producer |
| Paramillos Sur | Argentina | Mendoza | Prospect |
| Calabona | Italy | Sardegna | Past Producer |
| Borzsony Mountains | Hungary | Nógrád | Prospect |
| Talagiu | Romania | Arad | Prospect |
| Moldova Nouă | Romania | Caras-Severin | Producer |
| Bor | Serbia | Bor | Producer |
| Pontokerassia | Greece | Kentriki Makedonia | Prospect |
| Skouries | Greece | Kentriki Makedonia | Prospect |
| Taldy-Bulak | Kyrgyzstan | Talas | Prospect |
| Bayan-Uul | Mongolia | Töv | Prospect |
| Yulong | China | Xizang | Producer |
| Chimei | Taiwan (China) | Taiwan | Prospect |
| Far Southeast-Bato Tabio | Philippines | Benguet | Prospect |
| Guinaoang | Philippines | Benguet | Prospect |
| Dizon | Philippines | Zambales | Producer |
| Taysan | Philippines | Batangas | Prospect |
| Atlas Group | Philippines | Cebu | Producer |
| Yandera | Papua New Guinea | Madang | Prospect |
| Plesyumi | Papua New Guinea | West New Britain | Prospect |
| Moonmera | Australia | Queensland | Prospect |
| Copper Hill | Australia | New South Wales | Past Producer |
| Fisoka | Greece | Kentriki Makedonia | Prospect |
| Ulutaş | Turkey | Erzurum | Prospect |
| Dasht-e-Kain | Pakistan | Baluchistan | Prospect |
| Saindak | Pakistan | Baluchistan | Producer |
| Bor Group | Serbia | Bor | Producer |
| Pontokerassia Group | Greece | Kentriki Makedonia | Prospect |
| Skouries Group | Greece | Kentriki Makedonia | Prospect |
| Fisoka Group | Greece | Kentriki Makedonia | Prospect |
| Site name | Country | State or province | Development |
|---|