Mt. Kare Project, Papua New Guinea
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Papua New Guinea
Mt. Kare Project
Previous Exploration on the Mt. Kare Property
Gold Potential and Exploration Model
Papua New Guinea forms part of an island arc; it is located in an area where plates of the earth's crust have interacted in recent geological times. The Mt. Kare property and Porgera deposit occur at a point where large scale northwest-southeast structures running parallel to the island arc are intersected by the northeast-southwest trending Porgera Transfer Structure, a very important regional feature controlling gold mineralization in this area. The intersection of these two major structures has produced a conduit from the upper mantle along which a unique suite of mineralized mafic intrusives have risen. These mafic intrusive rocks are closed related to all known gold mineralization in this area. At both the Porgera Mine and Mt. Kare property, epithermal gold mineralization is genetically related to a mafic intrusive complex which was emplaced within the Porgera Transfer Structure. The emplacement of these intrusives at Mt. Kare and Porgera produced zones of brecciation and shattered rock providing a plumbing network through which mineralized fluids have circulated and deposited gold. Mafic intrusive rocks of the unique age and composition of those at Porgera and Mt. Kare are not known to occur anywhere else in Papua New Guinea.
There are two distinct types of gold mineralization at Mt. Kare, both of which correspond directly with the two types of ore being mined at Porgera: Early, mesothermal, carbonate-base metal-gold mineralization, which occurs in broad zones of brecciation which trend NE, paralleling the Porgera Transfer Structure. This type of mineralization has been defined in several zones at Mt. Kre and has been tested in trenches and numerous drill holes, such as hole 97 M-17. Late stage, epithermal, very high grade quartz-roscoelite-gold mineralization. This style of mineralization is analogous to the bonanza high-grade gold mined underground at Porgera. The high grade quartz-roscoelite-gold mineralization occurs in fault controlled dilatant features occurring within and proximal to the breccia zones which host carbonate-base metal-gold mineralization. These dilatant features can occur in variable orientations within the Porgera Transfer Structure. At the Porgera Mine, bonanza high grade quartz-roscoelite-gold mineralization occurs in the east-west trending Roamane Fault. At both Mt. Kare and Porgera much of the gold is tied-up in pyrite and is therefore refractory to conventional cyanide extraction. All ore at Porgera is processed in autoclaves to pressure oxidize the pyrite. Madison contracted the Placer Dome Research Laboratory to carry-out initial metallurgical testing on the Mt. Kare mineralization. Initial results have been very encouraging and achieved gold recoveries, after pressure oxidation, between 90.0 and 95.5%. Mineralization defined to date at Mt. Kare occurs in the Western Roscoelite, Central, Black and C9 zones. Currently known high grade Quartz-Roscoelite-Gold mineralization at Mt. Kare occurs in the Western Roscoelite Zone which strikes NNE and dips 65° to the east. The zone has now been traced along strike for over 700 meters by drilling and shows excellent continuity of mineralization. Soil geochemistry shows the surface trace of the Western Roscoelite Zone extending for up to 1,500 meters, and open along strike in both directions. Six hundred meters east of and sub-parallel to the Western Roscoelite Zone is the 1600 meter long multi-element Black Zone. It has now been traced over 500 meters by drilling and over 1,500 meters by soil geochemistry and trenching. The zone is still open down-dip. The Central Zone is a continuous, flat-lying, near surface mineralized zone lying between and above the Black and Western Roscoelite zones. It covers an area 300 meters wide by 600 meters long and remains open to expansion to the northeast. The total area of the surface expression of mineralized zones and untested anomalies at Mt. Kare now exceeds the surface area containing gold mineralization at the adjacent Porgera Mine. With a neighbor like the Porgera Mine, and the results obtained thus far, Madison has high hopes for Mt. Kare to become the next world class gold mine in Papua New Guinea.
**This web site contains information about adjacent properties on which we have no right to explore or mine. We advise the U.S. investors that the SEC's mining guidelines strictly prohibit information of this type in documents filed with the SEC. U.S. investors are cautioned that mineral deposits on adjacent properties are not indicative of mineral deposits on our properties.
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