Potrerillos, Chile

[2] One of Chile's Gran Mineria, the copper porphyry mine was identified and developed by William Burford Braden.

[4] Located 12 km east of the Sierra del Castillo fault, the area consists of Jurassic to Lower Cretaceous marine and volcanic host rocks.

During the Late Eocene, the Porfido Cobre intrusion induced Cu-Mo mineralization.

The supergene oxidation zone "is dominated by malachite and azurite in and around the Porfido Cobre stock.

[5] The company approved the project and quickly a committee of camp women began asking the Potrerillos residents for donations.