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Location: 30 km NW from Ndola, DRC
238 Route Likasi Commune Annexe Province Haut KatangaLubumbashiDRC
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Frontier SA is 95% owned by ENRC Congo B.V., a wholly owned subsidiary of Eurasian Resources Group Sarl (ERG). The remaining 5% of the project is owned by the Government of the Democratic Republic of Congo.
Frontier SA, a Congolese law company, is responsible for operating the mine, whose extension (called “Cut 4”) is the subject of the current update of the ESIA/ESMP.
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(Translated from French using AI)The geological sequence in the project area consists of sandstones, andesitic lava flows and their reworked equivalents, followed by dolomites and olive-green argillite (mudstone). The argillite (mudstone) is in turn overlain by whitish dolomites, locally referred to as white dolomites or simply lower-footwall dolomites. Above the white dolomite lies an argillite unit divided into two by an intermediate limestone. Grey and pink argillites are used locally to differentiate the lower and upper argillite units respectively, although alteration and overprinting by mineralization make precise color-based classification difficult. The lower argillite is generally thicker than the upper argillite.The argillite is overlain by sandstone (the marker unit), a distinctly clast-textured sandstone that is matrix-supported, with angular to sub-rounded siliceous clasts. The matrix appears recrystallized. The grain composition is almost exclusively silica, making it an appropriate marker unit (as it withstands textural obliteration caused by alteration or mineralization). Above the marker lies the black shale, whose altered equivalents host most of Frontier SA’s mineralization. Fresh, unaltered black shales are distinctly dark due to high carbon content, although laminated varieties are not uncommon. Stratification is defined by carbonate and/or pyrite.The mineralized facies of the black shale are pink or grey, the color resulting from albite, the main alteration mineral. The black shale is conformably overlain by the Grand Conglomerate, a glaciogenic diamictite and an unequivocal regional stratigraphic marker defining the base of the Nguba. The fact that the diamictite contact with the underlying shale is conformable confirms that the shale can be confidently assigned to the Mwashya. The Nguba tillite is overlain by a crystalline dolomite that forms a major aquifer in the project area. This dolomite is in turn overlain by silicic black shale. The silicic black shale has only been intersected in drillholes located farther east, outside the Mine boundary.
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