The CME Group raised trading margins on platinum and copper futures, hoping to tame volatility in products that have fallen sharply as markets witness what is turning out to be the worst rout since the 2008 financial crisis.
Gold prices jumped Monday as growing pessimism over Europe's finance's drove investors out of stocks, the euro and industrial commodities and into the U.S. dollar and the yellow metal.
Ivanhoe Mines said on Monday it has advised the Mongolian government it is not prepared to renegotiate a landmark ownership deal at the massive Oyu Tolgoi copper-gold project in Mongolia's South Gobi region.
Freeport-McMoRan Copper & Gold Inc said supervisory staff and volunteers are operating its Cerro Verde mine in Peru and production has not been hurt by a strike.
Gold headed for its third straight daily rise on Monday, having in September posted its largest monthly slide since 2008, after Greece warned it will miss deficit targets set to avoid bankruptcy, unleashing a sell-off in equities and commodities.
Sudan plans to double gold production at its main mine run together with Canada's La Mancha Resources within around two to three years and launch a copper production by 2015 or later, company officials said.
New Zambian President Michael Sata launched a probe on Friday into last year's sale of telecoms operator Zamtel and vowed to keep a close eye on copper exports, while finance minister Alexander Chikwanda told banks to cut interest rates.
Peru's government was brokering wage talks on Friday to end another labor strike at Freeport-McMoRan's giant Cerro Verde mine, which churns outs 2 percent of the global copper supply.
Global miner Rio Tinto is fighting a legacy of bad publicity as it tries to persuade the Mongolian public a $10 billion copper deposit it took over from Ivanhoe Mines last year is in safe hands.
The war-ridden country of Afghanistan has got a shot in its arm with the US Geological Survey releasing a report demonstrating the wealth of the country in the world-class mineral resources.
Gold jumped more than 1 percent on Friday after Germany's approval for expanding the euro zone bailout fund offered temporary relief to investors, but the precious metal was heading for its worst monthly decline in three years.
Workers at Freeport-McMoRan's Cerro Verde mine in Peru went on strike for better pay on Thursday, but the company said there was no disruption from the mine that supplies 2 percent of the world's copper.
New Zambian President Michael Sata fired his respected central bank governor on Thursday and his new mines minister floated plans to boost tax receipts from mining companies, rattling investors in Africa's biggest copper producer.
Gold prices rose on Thursday in choppy trade, with strong physical demand and gains in the euro lending support, but investors remained cautious towards the precious metal after this month's intense volatility.
Up to 1,500 striking workers at Freeport McMoRan Copper & Gold Inc.'s giant gold and copper mine in Indonesia's remote Papua province protested outside a government office on Thursday, urging authorities to help end a dispute over pay.
Mongolia's quest to renegotiate a 2009 deal to develop the giant Oyu Tolgoi copper-gold deposit might create a crisis of trust for foreign investors, but analysts said the decision could help it through a difficult legislative session starting next week.
Interest in the London Metal Exchange as a takeover target has snowballed and the number of suitors has risen to double digits because business is booming with volumes at record levels, its chief executive Martin Abbott said.
Ardent Mines Ltd. expects to buy mineral rights in north-central Brazil next month, the U.S.-based company said Wednesday.
Caution ahead of an audit of Greece's finances drove major world stock markets lower on Wednesday, while prices of commodities like oil and copper fell.
Mexican miner Minera Frisco, owned by the world's richest man Carlos Slim, said on Tuesday it was cutting its silver and copper hedges for this year and next, citing a significant decline in metals prices.
Gold rose on Wednesday, gaining from investor unease over the lack of a solution to the European debt crisis that dented other more industrial raw materials, such as crude oil and copper, ahead of further possibly weak U.S. data.
Asian stocks edged higher and a rally in the euro stalled on Wednesday, as investors looked for more signs that European leaders were tackling a debt crisis that threatens the financial system before committing bolder market bets
