SANTIAGO - A magnitude 5.9 quake shook northern Chile on Saturday but the Chilean emergency office ONEMI said there were no reports of damage and there was no tsunami alert.
The U. Geological Survey said the quake struck 84 miles (135 km) northeast of Iquique at a depth of 51.8 miles (83.3 km).
The world's No. 3 copper mine Collahuasi, jointly owned by Anglo American and Xstrata, said workers had felt the tremor, but it had not affected its operations.
Quake-prone Chile's economy is still recovering from a magnitude 8.8 earthquake just over a year ago, which hammered towns, infrastructure and industries in south-central Chile and killed more than 500 people.