The bank has been offering to trade contracts in commodity index products, such as the S&P GSCI, whose constituents include nickel.

The company said it had received permission by the Russian government to pay in dollars, but believed Citigroup, the paying agent, would block the payment.

Banks last year lobbied against efforts to increase transparency in metals markets, LME chief executive Matthew Chamberlain said in an interview.

Prices of materials like crude, gas, wheat and metals have become alarmingly erratic as a gulf emerges between buyers and sellers who are facing big financing strains.

Centerra will be evaluating the impact of this suspension on its 2022 guidance, which was raised to 400,000-450,000 oz earlier in the year.

Electronic trading stalled again Friday after a short flurry of deals when the market opened.

Researchers discovered the value of europium molecular crystals for quantum communications and processors.

The precious metal quickly turned around after dropping to a two-week low Wednesday following the US central bank's move to raise interest rates.