The firm said work (a second phase) had extended the mineralized shear zone outlined in the first phase to a length of 650m (meters) and to a depth of up to 150m.
Shear zones host most of the major gold deposits in Ghana, Asante noted.
Meanwhile, one hole - MEM17-11C - has hit a 3.5m wide sulfide and quartz mineralized shear zone with visible gold.
Notably, this hole was drilled on the same secion and 25 meters under the high grade gold discovery hole MEM17-001B, which hit 13.12g/t gold over 3 meters) .
Drilling is continuing to test this shear zone along strike, the group said.
Asante shares shot up almost 43% in Toronto to C$0.10.