The Mexico and Peru-focused copper producer was no doubt boosted by the red metal price remaining within about US$25 of the three-year high reached in early September of about $6,900 per tonne.
Demand from top consumer China continues and Southern Copper is aiming to increase its production capacity to 1.2 million tonnes of copper a year by 2021.
However major UK bank Barclays has predicted a "bearish overall direction" for copper in the current quarter, saying China's concentrate market might not be as tight as previously believed.
Glencore (LN:GLEN) and Coal India (IN:COAL) made the next largest gains, both up 2.7% for the week.
Coal India finalised the 10th wage agreement of coal workers last week after more than 14 months of negotiations, which included a 20% salary increase and the "special accomplishment" allowing every employee one day off a week.
Relative newcomer to the table China Molybdenum (HK:3993) was headed in the opposite direction, dropping back 2.5% after several weeks of gains.
The gold price meanwhile has lifted above $1,300/oz after the US released lower than expected CPI and retail sales data at the end of last week.