Resolute Mining (ASX:RSG) revised its full-year production guidance for the Syama gold mine in Mali to between 150,000 ounces and 160,000 ounces of gold at an all-in sustaining cost (AISC) of $2,300 to $2,400 per ounce, according to a Monday filing with the Australian bourse.

The company said production at the gold mine has remained below plan due to the "challenging" operating environment, which continued to reduce ore availability, delay access to higher-grade ore sources and affect plant throughput and recovery, per the filing.

Full-year gold production is now anticipated to be 205,000 to 225,000 ounces at an AISC of $2,250 to $2,350 per ounce, the filing said.