Details of Work

Historical Work.

The Cape Coast Basin appears to have seen little or no activity in the big gold rush of 1898-1901 but it did receive some attention in the 1930s. Junner (1935) mentions earlier references in Gold Coast Geological Survey annual reports on minor gold associated with aplites and pegmatites in the coastal area around Mamkwadi and the gold in some exposures of Tarkwaian conglomerates in the area of Mumfod (now Dwomba). Previously, Whitelaw (GC Geological Survey, 1938-39) had also noted minor gold in the Amisian clastics close to Apam. These were evaluated in the 1930s by the London junior, Appollonia Gold Fields Limited who held several small concessions along the coastal area between Mankwadze and Apam, as well as another concession further inland at Onyadzi (Moseley and Waller, 1935). Regional mapping and prospecting by Layton (Ghana Geological Survey Bull. 24, 1958) in the late 1950s referred to the earlier reports of gold by Junner (1935) as well as to prospects at Oguakrom (Junner, GC Geological Survey, Ann. Rept 1938-39) and Onyadzi. These were re-examined by Layton who considered them to have little economic significance. Geochemical stream sediment sampling by Van den Berg and Dove (Ghana Geol. Survey, Arch. Rept 24, 1991) on portions of field sheets 29 and 31 (Winneba NW and SW) yielded significant arsenic anomalies (up to 800 ppm) around Ajumako. These were considered quite significant as possible indicators of gold potential in the area. In the frenzied exploration boom of the mid-1990s, prospecting and reconnaissance licences were applied for in areas covering most of the Winneba portion of the volcanic belt. Ashanti Goldfields was especially active and they acquired a large reconnaissance licence (470km2) covering the old Oguakrom prospect, north of the Winneba junction and for a considerable distance to the west. Ashanti's regional work involved broad scale soil geochemistry and geological mapping.

Summary of Proposed Work Programme and Budget

The concession will be screened with first phase stream sediment geochemical survey to help define broad prospective zones for detailed follow-up investigation. Anomalous zones will then be followed up with soil geochemical survey to constrain mineralization further to a limited area. Geological mapping will be carried out to help define lithological contacts. Trenching will then be carried out to test in situ mineralization within saprolitic zone. The proposed work programme is summarized as follows:

(i) Literature Review, Logistics and Mobilization

This will include acquisition and synthesis of available historical geological information covering the concession and surrounding areas. The study will assist in forming an action plan. Re-assessment of existing infrastructure facilities-roads, electricity, water supply, medical facilities, banks and communication facilities, etc will also be carried out at this stage. A sociasurvey will be made to establish the labour capacity of the area and a good rapport will be established with the District Assembly, Elders and Chiefs of the area. Accommodation will be rented locally for field officers. A 4WD vehicle and prospecting gear-boots, sample bags, hammers, shovels, cutlasses, compasses, and etc-will be procured.

(ii) Stream Sediment Sampling

Stream sediment samples (including QA/QC samples) will be collected from pre-selected locations at a density of 1 sample per ~5 sq.km along streams draining the concession area. Samples will be sun dried, sieved to minus 30 mesh fraction and analyzed for gold and lithium as well as several other multi-elements. This exercise will assist in determining areas where detailed exploration needs to be carried out. Sample location will be plotted onto base topographical maps using the GPS reading that will be taken at each sampling site.

Grid Mapping and Soil Sampling

Anomalous areas targeted by the above stream survey will be further investigated by gridding, mapping and soil sampling. Grid lines will initially be cut at a spacing of 400m with samples taken at 50 m intervals and later infilled. Samples will be analyzed for both gold and lithium.

(iv) Geological & Structural Mapping and Geophysical Data Interpretation

This phase will mainly be an orientation work during which attempts will be made to delineate prospective economical areas. This will be based on preliminary geological mapping, whole rock and grab sampling as well as interpretation of available aeromagnetic data so as to confirm and update the general geological trends and formations documented in literature. Lithium bearing pegmatites will be targeted and sampled for analysis to determine the percentage composition of lithium and other minerals.

(v) Regolith Mapping

Regolith mapping will be carried out to establish the regolith regimes within the licence area. This will be useful for interpretation of soil results and prioritization of targets that will be generated.

(vi) Pitting & Trenching

Pitting and Trenching will be carried out in targeted areas based on soil sampling results, geological mapping and geophysical interpretation. Trenches will be orientated perpendicular to the strike of the target horizon and excavated to a suitable depth to obtain a representative in-situ saprolite sample. Sampling will likely be done as continuous 1 meter chip samples along the length of the trench and sampled by lithology.

(vii) RAB Drilling

Exploratory Rotary Air Blast Drilling will be carried out throughout the strike length at an average depth of 50m in order to evaluate the depth extent and continuity of lithium and gold mineralization at depth. It is expected that about 2000m of drilling will be accomplished within the first three years of the licence tenure.

(viii) Evaluation of Results and Reporting

Other geological investigations will be carried contingent on results. All results including those from the stream sediment sampling will be superimposed onto geological maps and analyzed. A decision can then be reached on whether or not further investment is needed.