The Avrebo prospect is located 11.5km south-east of the Nzema plant and 700m north-west of the Avrebo village on the Apa Tam Prospecting Licence. Apa Tam PL covers an area of 146km sq and is predominantly underlain by the Avrebo Domain that comprises Birimian age volcanic and volcaniclastic rocks, minor greywacke and phyllites and Dixcove-type intrusive bodies.
The Avrebo prospect is located on a NNE orientated mineralised trend that may represent a new shear zone. 3km to the south of Avrebo is the small Mame gold mine that is excised from the Apa Tam PL. To the north is the Akoko South resource where Castle Minerals have reported a resource of 25,000oz Au. At the Avrebo prospect there is a row of pre-colonial prospect pits along a north-south trending hill that extends for over 100m.
Soil sampling at Avrebo was initially on a 50m x 500m grid that was later in-filled to 100m spaced lines. The soil sampling identified two coherent >0.1ppm gold anomalies at Avrebo and Avrebo West. At Avrebo the soil anomaly extends 3.7km to the northern boundary of the licence. Sixteen trenches were dug and sampled to follow up the soil anomalies and these were followed by several phases of RC and diamond drilling. Gold mineralisation is structurally controlled and comprises quartz veining within a broad zone of silicification.
Best results include:
|AVRC034|| ||29m @ 3.31g/t Au from surface
|AVRC061|| ||23m @ 2.17g/t Au from 6m
|AVRCD19|| ||33.6m @ 1.51g/t Au from 67.6m
|AVRC067|| ||20m @ 1.97g/t Au from 94m
|AVRC018|| ||11m @ 5.13g/t Au from 41m
At Avrebo West, 800m to the west of Avrebo, soil sampling has identified a +0.1g/t Au anomaly that extends for 1.6km parallel to the Avrebo anomaly. Trenching returned results including 10m @ 2.22g/t Au and 44m @ 0.63g/t Au. Drill testing of the anomaly has been very limited to date.
Additional work is planned at Avrebo during 2010-11. Additional trenching and RC drilling will be conducted to test the Avrebo and Avrebo West soil anomalies to increase the existing resource.