By Sara Sjolin, MarketWatch

LONDON (MarketWatch) -- Miners Anglo American PLC and Antofagasta PLC led U.K. stocks higher on Wednesday after well-received production updates, while the broader market advanced after a Turkish rate hike stemmed fears about volatility in emerging markets.

The FTSE 100 index rose 0.6% to 6,614.55, on track for a second day of gains.

Shares of Anglo American gained 4.8% after the miner said production rose across most commodities in the fourth quarter. Iron-ore output jumped 25%, while copper production rose 24% to a record 214,400 tons in the period.

Antofagasta picked up 6% after posting a rise in full-year copper production, which it attributed to strong performance across all its operations.

Other mining firms were also on the rise, with shares of Randgold Resources Ltd. up 2% and Rio Tinto PLC rising 1.8%. Metals prices were mostly higher.

The broader market rose along with other European equities after the Turkish central bank late Tuesday aggressively increased interest rates to halt a recent slide in the currency and stem capital outflows. The central bank raised the overnight lending rate to 12% from 7.75%, initially sending the lira higher. Around midmorning in Europe on Wednesday, however, the currency fell back against the dollar again, with the dollar buying 2.2233 lira, a 1.9% increase according to FactSet.

Banks were among major advancers in London. Shares of Barclays PLC (BCS) gained 3.3%, Lloyds Banking Group PLC (LYG) rose 0.9%, and Royal Bank of Scotland Group PLC (RBS) picked up 0.5%.

On a more downbeat note, shares of J Sainsbury PLC lost 2.7% after the supermarket chain said its Chief Executive Justin King has decided to step down and will be replaced by Mike Coupe.

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