CORRECTED-Glencore says H1 copper output jumps 20 pct

(Corrects direction of move in zinc in paragraph 3 to lower, not higher)

Aug 14 (Reuters) - Miner and trader Glencore Xstrata reported copper production increased by a fifth in the first six months of 2013, driven by new operations to replace depleted mines and the ramp-up of its operations in the Democratic Republic of Congo.

Among the diversified miners, Glencore Xstrata has the biggest exposure to copper. It produced 673,400 tonnes of the red metal in the first half, with African copper production alone totalling 171,500 tonnes - up more than 40 percent.

Zinc output, a key source of revenue for the combined group, ticked 3 percent lower to 729,500 tonnes.

The group, which is due to report half-year earnings on Aug. 20, gave no comment on its closely watched marketing division. (Reporting by Clara Ferreira-Marques; Editing by Tom Bergin)

Read more: The Shanghai fix: Chinese gold dealers manipulated prices for years

Five Shanghai gold retailers and the Shanghai Gold & Jewelry Trade Association have been penalized for price manipulation of gold and platinum products, carried out over the past six years.

The National Development and Reform Commission fined the retailers $1.63 million, equivalent to 1% of 2012 sales.

The Shanghai Gold & Jewelry Trade Association, whose 226 members account for over 90% of Shanghai's gold market, set the daily price range adopted by the city's retailers.