Bitcoin, a new and private form of currency exchange, got some attention from Paul Krugman in a column who drew parallels between it and gold, finding that both markets are susceptible to underlying problems of "money-hoarding, deflation, and depression." BitCoin, which is well-examined in an article by James Surkowieki, is an alternative form of currency exchange.

Ukraine always has been and always will be a reliable partner for transit of energy to Europe, stated the Ukrainian Minister of Energy and Coal Industry Yuriy Boyko during his meeting with the representatives of the foreign diplomatic corps in Ukraine. "Ukraine has demonstrated its commitment to integration with the European Union in the energy sector by becoming a full member of the Energy Community and carrying out comprehensive work to bring its energy sector in accordance with European requirements," stressed the Ukrainian energy minister.

Billionaire iron ore heiress Gina Rinehart is being sued in the NSW Supreme Court by her daughter, Hope Welker. The nature of Welker’s claim is currently unknown, and Rinehart’s legal team is seeking to keep the matter confidential. Rinehart’s barrister, Alan Sullivan, QC, told the court the application had been made because of “the impact on commercial negotiations”.

China will eventually become a net importer of aluminum but the timing of this shift is uncertain, the chief executive of Rio Tinto Alcan said Thursday.

A new study says the oil sands will boost the economy by two trillion dollars and add more than 900,000 new jobs over the next 25 years.

Market research house BMI has over the past quarter made an upwards revision to its forecast for Zambian copper output for this year, increasing it to 913 000 t, up from 877,000 t.

Shares of Primero Minerals (TSX:P) crashed 13% Thursday after a month-long strike and lower-than-anticipated gold grades at its San Dimas silver/gold mine in Mexico forced it to revise its 2011 guidance. The Toronto-based company said it will produce 80-85,000 ounces of gold this year compared to the previous estimate of 90-100,000 ounces. The silver production target remains unchanged at 4.5 to 5 million ounces of silver.

Authorities in Belgium are investigating a case that may turn out to be the country's largest ever fraud. De Tijd this week published some of the names from a list of 170 of Antwerp diamond traders who it claims are being investigated by authorities for spiriting almost $1 billion (€700 million) in unpaid taxes into secret Geneva bank accounts. Approximately 80% of the total world production of rough diamonds is traded by the 185 gem companies operating in Antwerp (pictured) and 50% of the globe's polished diamonds pass through the Flemish town. The Antwerp traders are among a much larger roster of at least 24,000 HSBC Private Bank clients from Canada, India and Germany under investigation by French authorities since 2009.

Amid dire predictions about job losses and the drying up of investment in the sector due to a proposed carbon tax come more bad news for Australia's coal miners. Platts reports New South Wales plans to increase the royalties it receives from coal companies to offset some $400 million in extra costs to the state's coal-fired electricity generators due to the very same federal government carbon levy. Around 95% of NSW's royalty revenue comes from coal mines where rates currently top out at 8.2% of the value of production and is forecast to rise to $2.1 billion in the year ending June 2013 after the hikes come into effect.