The Supermarket Prospect area is underlain by two broad basement lithologies, namely granite and granitic gneiss, into which quartz veins and veinlets have been intruded. The general trend of both lithologies ranges between 44º - 82º, dipping steeply to the northwest (>65º). Around the old mining site of Gold Camp, the area is underlain by greenstone and itabirite (banded iron formation), which forms the southern portion of the Kpo Range.
Field observations show that gold mineralization is controlled by the lithological contact between the granite and granitic gneiss. Veinlets of quartz, itabirite iron formation (BIF), ultramafic greenstone rocks, and amphibolites have been intruded into the granite and granitic gneisses.
Robin Whiteaker PGeo during 43-101 Field visit inspects massive quartz veining that hosts mineralization near Bolllustown on strike with Supermarket prospect. |
Rockson Coffie mapping structure where locals heat the quartz veins with fire and splash them with water to break the rock for extracting gold. |
The main lithology which contains most of the potential anomalous soil zones is the mafic greenstone belt. There are numerous undisturbed quartz veins which contain visible gold in some areas where artisanal gold mining work is ongoing. On the other hand, where the quartz veins are sheared, there are veinlets interbedded in the intensively sheared mafic schist.
Most of these sheared mafic schists have been altered by hydrothermal fluids rich in carbonates and iron oxides. The carbonate-rich altered zones have high grades of gold throughout the Kpo Greenstone formation.
Situated at the northern part of the Kpo Range, the Supermarket Prospect lies on strike with the large artisanal gold mining areas at Bollestown and the Guyama. A grab quartz vein sample collected during the initial reconnaissance program on the Lucky Hill area assayed 1.64g/t Au.
To date, a 400m x 50m geochemical soil sampling grid has been completed on the Supermarket Prospect. A very weak geochemical anomaly, which lies along the contact between the southern Kpo Greenstone formation and the basal Archæan granite, has been identified.
Due to the remoteness, steep terrain and difficulty in accessing the Supermarket area, an airborne IP geophysical survey is recommended to further evaluate the region. If anomalous structures in favorable geology are found, then a follow-up RAB (rotary air blast) drill program will be proposed.
Fieldwork statistics to date for the Supermarket Prospect
# of Stream Sediment Samples | # of Rock Chip Samples | # of Soil Samples | # of Trench Samples |
58 | 21 | 2143 | 12 |