Frik Els , Editor

News reports on Saturday say Rio Tinto's Zimbabwe subsidiary Murowa Diamonds has ceded 51% of its equity to comply with a new law that requires Zimbabweans to own the majority of foreign companies. Rio Tinto says on its website it has completed a feasibility study and received environmental go-ahead to expand Murowa production 8-fold at a cost of $200 million. Saturday's report cast serious doubts on whether the investment, which requires foreign capital, would now be made. It appeared in recent weeks as if Zimbabwe was soft-pedalling the indigenization laws, but Rio Tinto's capitulation has now put pressure on Impala Platinum, struggling to hold onto its $20 billion worth of reserves in the country.

Tucson Sentinel reports the Painted Desert of northern Arizona holds hundreds of million years of history, from fossils of dinosaur ancestors to ancient Native American dwellings, but Petrified Forest National Park and the land around it also sit on as much as 2.5 billion tons of potash. The US Congress approved expansion in 2004, authorizing the park to purchase land from willing sellers. The park added the first 26,000 acres in September, but that purchase didn’t include the mineral rights because of a lack of funds.The old and new boundaries of the park are over approximately 50% of the Holbrook basin potash deposits and three companies – Passport Potash, American West Potash and HNZ Potash – currently are drilling test holes inside and outside the park to establish the depth and quality of the deposits.

Does gold's precipitous $300 drop in September represent a fundamental market shift? It is hard to argue with this statement: "Global stock markets are volatile, central banks have not regained credibility, inflation is still a concern, and trust in the markets has not been restored. Yet gold continues to fall... Gold has lost its shine."

Workers at Freeport's Grasberg – one of the world's largest gold and copper mines – in the remote Indonesian province of West Papua vowed Friday to paralyse production, as their strike over pay enters its second month. About 12,000 of Freeport's 23,000 Indonesian workers have joined the strike that started on Sept. 15 and on Friday Freeport said some workers have returned, putting it in a position to increase mining and milling output. The gulf between the the two parties are so wide that chances of a settlement appear remote – Freeport has offered a 25% increase on wages while the union wants the current minimum rate of $1.50 an hour raised more than 8-fold.

IDEX Online News reports the rough diamond market is in a rut and demand for rough is so limited, that traders are not buying goods, even if offered at 12 or even 13 percent below what DTC's roughly 80 selected clients – called Sightholders – paid for at last week's Sight. Traders cannot move it, and manufacturers claim that with the current decline in polished prices they will lose money. IDEX says from a low cost supplier, DTC – the rough diamond sales and distribution arm of De Beers – has ascended to the pricier side of the list, alongside Russia's Alrosa. Many lots also went unsold at BHP Billiton's latest tender and Diamdel's auction, with bids falling short of the reserve prices.

Reuters reports copper rose to its highest in nearly a week on Thursday to close at $7,225/tonne on the LME up from Wednesday's close of $6,820 as US data hinted at an improvement in the labour market and European policymakers' comments on dealing with Greece's debt crisis calmed nerves. Copper's strong gains comes at a time when some 5,000 merchants are gathering in the British capital for London Metal Exchange week, an annual event during which supply contracts are discussed. On Monday the red metal fell to 14-month low.

AFP reports a blue-and-white Ming vase fetched nearly $22 million in Hong Kong on Wednesday, setting a new record at auction for porcelain from the 15th century Chinese dynasty. The vase went for more than double the lower pre-sale estimate, but at Sotheby's jewels and jadeite auction held at the same time the 9.27-carat Golconda Pink diamond with an estimate of $13 million – $19 million went unsold. Hong Kong is now the world's third-largest auction centre after New York and London, thanks to China's rapidly growing number of millionaires.

Shares in London-listed Antofagasta, the copper giant controlled by Chile’s Luksic family, jumped 7% in afternoon trade on the FTSE, one of the best performers on a good day for miners. CEO Marcelo Awad earlier told Dow Jones Newswires the slump in copper prices in the last few weeks is a market overreaction and it hadn't seen any of its customers cancel or delay shipments. Copper has slumped over 30% since peaking at an all-time high of $10,190/tonne in February and Awad added that European customers of Antofagasta – after Thursday's move upward worth £10 billion again – are nevertheless reluctant to commit to 2012 orders thanks to all the uncertainty in the eurozone. The Luksics could do with a bit of a boost: analysts say Chile's richest family may have lost their way after buying control of Latin America’s largest container shipping company last month.

Reuters reports Zambia has lifted a ban on metal exports just two days after imposing it to sort out revenue collection and increase transparency in Africa's top copper producer, a minerals ministry official said on Thursday. It's good news for the Zambian mining sector – a lengthy suspension could have further pressured mines already dealing with volatile metal prices in recent weeks. Newly elected President Michael Sata has been concerned – analysts say with good reason – about copper exporters misreporting the amount of ore leaving Zambia, and earlier this week suspended export permits, to put new guidelines in place. Cobalt, gold and nickel also fell under the ban and now all export payments need to be routed via the central bank.

Despite worldwide efforts to reduce the consumption of rare earth elements, researcher IMARC Group expects strategies like substitution and recycling to have a little effect on demand for erbium, dysprosium, terbium, neodymium and europium in the short term.