It said it had received positive drill results extending the high-grade mineralisation at Fetekro after drilling almost 32,000m since March 2017, including 312 reverse circulation and diamond drilling holes.
It said drilling focused mostly on the Lafigué target where it defined a large mineralised vein system over a 2.5km-by-0.6km area. The area remains open at depth and towards the east.
Outstanding intercepts from the drilling included 7.97g/t gold over 26.9m, 25.9g/t Au over 10.9m, and 13.21g/t Au over 7.6m.
Endeavour said it was busy interpreting all data and expected to publish a maiden resource estimate in the December quarter, with a follow-up drilling programme to start during the same period.
It also recently completed a gold-in-soil geochemical campaign and preliminary assessment has shown the occurrence of additional targets close to Lafigué, which it plans to drill in 2019.
Endeavour's shares were up 0.5% Monday at C$20.22 (US$15.65).