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Ghanzi Copper-Silver
Project
Located in northwestern Botswana, the Ghanzi Copper-Silver Project consists of five license blocks covering approximately 2,200 square kilometers (220,000 hectares). The licenses are located over widespread sediment-hosted copper mineralization and at least six exploration targets have been identified to date. The Company has agreed to acquire a 100% controlling interest in the Ghanzi Copper-Silver Project (subject to TSX Venture Exchange approval).Mineralization Mineralization at Ghanzi occurs above the contact between finely laminated and chemically reduced mudstones and siltstones of the D'Kar Formation and oxidized arkoses and sandstones of the Ngwako Pan Formation. Folding along northeast trending axes has repeated the stratigraphy resulting in > 600 kilometers of cumulative strike length in the original license area. The contact between the oxidized footwall sandstone and the reduced hanging wall siltstone is sharp and always mineralized. The dominant sulphides present are bornite and chalcopyrite with minor amounts of chalcocite and pyrite. Molybdenum and rhenium are locally important constituents and occur with calcite and quartz-calcite veins in hydrothermally altered areas. Silver is a significant minor constituent and ranges in grade from 5 to >50 g/t and averages 15 g/t. An oxide zone overlies the sulphide mineralization and extends to a depth of 15 to 20 metres into bedrock. The main copper-oxide minerals aremalachite, azurite and chrysicola. Native copper is present locally. Mineralization at Ghanzi is classified as a reduced facies sediment-hosted copper-silver deposit similar to the Central African Copper Belt of Zambia and DRC. It is most closely analogous to the Kupferschiefer, in Poland. Mineralization at Kuperschiefer occurs to a vertical depth of at least 700 meters and is open. The ore zones average 4 to 6 meters in width and range from 1.5 to 2.0% Cu and up to 80 g/t Ag; the deposit is mined underground. This deposit accounts for 6% of annual global copper production and contains 30% of world copper reserves. This type of deposition in copper can generate a resource that is both very large and of attractive grade, making for world scale mining opportunities. Project Infrastructure The project extends from Ghanzi (in the south) to Maun (100 km to the northeast). With a population of 50,000, Maun (the regional tourist hub) provides electricity (20MW on 132kV line) as well as paved access to Francistown (Botswana's second-largest city). The paved trans-Kalahari highway to Namibia and South Africa runs 10 km to the north, and a proposed rail link to Namibia is scheduled to pass within 10 kilometers of the project area. Project History The property has been explored intermittently since 1962 by a number of large companies, including Gencor (now BHP Billiton), Anglo-American, Anglovaal, Newmont, DeBeers, US Steel Corporation and Delta Gold. Work was conducted at a time when copper prices were low and infrastructure was not as advanced as it is today. With more advanced infrastructure now available and copper trading at much higher prices, the preliminary results obtained by this group of companies suggest that Ghanzi is potentially a large, target-rich area with existing economically significant mineralization. Exploration History
Moving Forward Hana Mining has evolved from early stage exploration to moving toward prefeasibility in 15 months. The company has embarked on a drill program designed to expand the initial inferred resource base as well as commission a metallurgical study and complete infrastructure and power studies. A regional hydrogeological study was recently completed. Collectively, this work will be compiled into a scoping study, which is forecast to be completed by the end of 2010, followed by prefeasibility.  Click to Enlarge |
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