In 2011, the world's total tungsten reserves were 3.1 million tons (tungsten trioxide), an increase of 7% over the 2.9 million tons in 2010. Reserves in the world's major countries remain unchanged, with China's 1.9 million tons, Russia's 250,000 tons, and the United States' 140,000 tons. Other countries' reserves have increased slightly, from 420,000 tons to 600,000 tons.
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