By Sara Sjolin, MarketWatch
LONDON (MarketWatch) -- The U.K.'s benchmark stock index headed for its second weekly loss in a row on Friday, with mining firms on the decline as metals prices moved lower across the board.
The FTSE 100 index dropped 0.3% to 6,767.66, setting it on track for a 0.6% loss on the week.
Dragging the benchmark lower, miners posted some of the biggest losses. Shares of Anglo American PLC lost 1.4%, Fresnillo PLC dropped...