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Manfo

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Geology and Mineralization


The geology of southwestern Ghana is dominated by greenstone belts composed of mafic volcanic rocks and intervening basins typically consisting of fine-grained, deep marine sediments metamorphosed at greenschist facies. Both components are intruded by granitic rocks and separated by major structures. The Sefwi Belt, which hosts the Manfo Project in its north central portion as well as the Ahafo, Bibiani and Chirano gold deposits, is one of the largest and most productive of the Birimian age greenstone belts.



The Manfo Property is underlain primarily by metasediments, mafic volcanic rocks, and small granitoid bodies. A major northeast trending fault zone or corridor, approximately three kilometres wide, traverses the east side of the property. This fault corridor serves as the regional contact between the greenstone volcano-sedimentary package to the west and a regional belt batholith to the east. The geochemical targets identified to date lie on the west side of this fault corridor, along the minor fault shown in the accompanying map. An unexplored major belt-bounding fault defines the limits of supracrustal rocks east of mineralization discovered to date. Larger deposits, greater than 1 million ounces gold, are found within 1.5 kilometers of these belt-bounding structures in the Sefwi Belt. These include the Subika, Kenyase ,Awonsu-Apensu, and Yamfo deposits on the west side of the belt at Ahafo, 19 kilometres to the north, and the Bibiani and Akwaaba deposits 35 kilometres to the south. Gold at Manfo occurs in pyritic, carbonate and sericite-altered structures, Gold bearing intervals are immediately adjacent to magnetic metasediments or mafic volcanics. Further exploration is planned between the minor and major faults.