MOSCOW, March 26 (Reuters) - The Russian rouble slightly

weakened against the U.S. dollar on Tuesday.

By 0715 GMT, the rouble was 0.23% lower at

92.80 to the dollar after trading in a range of 92.490 to

92.878.

Against the euro, the rouble fell 0.26% to

100.69 and dropped 0.19% to 12.80 against the yuan

.

The most active Brent crude oil futures, a global

benchmark for Russia's main export, fell 0.1% to $85.99 a

barrel.

Russian stock indexes rose. The dollar-denominated RTS index

rose 0.04% to 1,116.07. The rouble-based MOEX Russian

index gained 0.15% to 3,286.54.

($1 = 92.7950 roubles)

(Reporting by Reuters)