TOKYO, March 22 (Xinhua) -- Tokyo stocks were mixed Thursday morning as the U.S. Federal Reserve's interest rates hike provided support while concerns about U.S. trade policy continued to weigh.

The 225-issue Nikkei Stock Average gained 80.52 points, or 0.38 percent, from Tuesday to 21,461.49.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, edged down 1.36 points, or 0.08 percent, at 1,714.93.

Mining and oil and coal product issues comprised those that gained the most by the morning break.

Transportation and securities issues, meanwhile, led notable decliners.

Financial markets here were closed Wednesday for a national holiday.