Compass Gold Corp. is pleased to provide an update on the recently completed deep bedrock drilling on four prospects on the new Moribala permit, located on the Company’s Sikasso Property in Southern Mali.
Ten reverse circulation (RC) holes (833 m) were drilled in late June on four prospects (Dafaraba, Ngolokouna, Million-ki, and Dakoun) on the Moribala permit. These areas had been previously drilled by air core (AC) drilling, and two prospects (Dafaraba and Dakoun) had encountered encouraging results.
The Ngolokouna and Million-ki prospects did not identify gold mineralization in the AC program. However, the abundance of active artisanal mining operations and a clear correlation with ground geophysics and remote sensing studies suggested that the shallow AC drilling might have drilled through areas that had been mined out. It was therefore decided that a single deep RC hole should be drilled on each prospect in an area of artisanal workings.
The best mineralization encountered during the RC drilling was reported from the Dakoun prospect where the previous twenty-hole AC program had intercepted several short intervals of mineralization, including 2 m @ 1.12 g/t Au (from 21 m). MORC07 intercepted 7 m @ 2.85 g/t Au (from 70 m), including 6 m @ 3.29 g/t Au (from 70 m), and MORC08 intercepted shallow low-grade mineralization of 4 m @ 0.25 g/t (from 34 m).
MORC08 was designed to test deeper mineralization, but had to be stopped before the target structure was reached due to poor ground conditions. Holes MORC09 and MORC010were drilled 220 m to the NE to test the strike potential of the structure identified from ground geophysics. MORC09 was barren, but MORC10 contained three mineralized intervals over a length of 11 m, which included 1 m @ 2.30 g/t Au (from 56 m). This indicates the structure is present, and the gold content is highly variable.
Four holes (totalling 347 m) were drilled at Dafaraban, the northwest of the Moribala permit over the interpreted Moribala Fault. Previous drilling in the area had identified a wide zone of shallow gold mineralization returning 21 @ 0.50 g/t Au (from 1 m), including 7 m @ 1.01 g/t Au (from 1 m). The purpose of MORC01 and MORC02 was to intercept this mineralization at depth to determine the down-dip continuity. Neither hole encountered mineralization, with the highest gold content being 0.17 g/t Au in MORC01. It is very likely that the drilling missed the structure due to the angle of the hole (i.e., the mineralization is associated with a cross fault on the Moribala fault.) Two additional holes were drilled 280 m to the southwest over the interpreted location of the Moribala fault. These holes returned narrow mineralized intervals of 1 m @ 0.92 g/t Au (from 26 m; MORC03) and 1 m @ 0.28 g/t Au (from 14 m; MORC04). None of the holes were associated with artisanal workings, the closest workings being 200 m to the northwest of MORC01.
At Nglokouna, a prospect characterized by abundant active artisanal workings, a shallow soil sample collected at its edge contained 43.6 g/t Au. This prospect covers an area of 0.5 sq. km and follows the interpreted Tarabala fault over a distance of 1.9 km. Despite the clear evidence of gold being recovered in the vicinity, air core drilling returned only weak mineralization (grades less than 0.6 g/t Au over 1 m) and the single deep RC hole there (MORC05 for 54 m) recorded a maximum gold content of 67 ppb Au. Similar results were obtained at the Million-ki prospect, where drilling beneath workings that follow a fault parallel to the Moribala and Tarabala fault returned only 25 ppb Au.