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Location: 35 km NW from Yamoussoukro, Cote d'Ivoire
II Plateaux – Vallons Rue J75/J44 Lot 1438 ilot 145 06 BP 1958AbidjanCote d'Ivoire06
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Yaouré may be described as orogenic lode-style gold mineralisation. The Yaouré project comprises several neighbouring gold deposits, including Yaouré and CMA, that occur near the south-eastern flank of the Bouaflé greenstone belt in central Côte d’Ivoire. Mineralisation is hosted by Paleoproterozoic aged metabasalts and felsic intrusive rocks of the Birimian Supergroup. The rocks are metamorphosed to lower greenschist facies and only locally feature penetrative deformation fabrics.In the Yaouré deposits, gold is associated with disseminated pyrite. At CMA deposit, mineralisation is associated with quartz-albite-carbonate veining in reverse fault structures that dip at 25 to 35 degrees to the east and northeast. Yaouré deposit comprises several mineralisation styles controlled by east-dipping structures, similar to CMA, in addition to mineralisation associated with quartz- tourmaline-chlorite-carbonate veining controlled by NE and NW striking, sub-vertical faults and also stockwork quartz veins with associated alteration selvages hosted by a granodiorite intrusive body.The combined deposits extend over an area around 1.4 km east-west by 2.1 km north-south.Gold mineralisation is accompanied by traces of molybdenum, tungsten, antimony, bismuth and tellurium indicating that the mineralisation may have affinities with the reduced intrusion-related gold systems (IRGS). The predominance of structural controls and association with carbonatisation, sericitisation and silicification, however, are characteristics that more clearly point to its classification as an orogenic, mesothermal gold deposit. Addition of the CMA underground to the Yaouré Gold Mine has the potential to extend the LOM and increase the annual ounce production profile by substituting low grade open pit feed with higher grade underground Ore Reserves.The CMA Underground Mineral Resource comprises fifteen discrete lodes with typical thicknesses ranging from 2-3 metres up to 15-20 metres. Eighty-nine percent of the Indicated Mineral Resource tonnage and ninety-two percent of the Indicated Mineral Resource contained ounces is hosted in the principal CMA and bifurcated hangingwall lode (structure).CMA underground Mineral Resource extends from the designed base of the CMA open pit to a maximum vertical depth of approximately 185 metres for Indicated Resources and 350 metres for Inferred Resources. The corresponding down-dip extents beneath the pit design base are approximately 400 metres and 700 metres. The Mineral Resource extends over 1,400 metres in strike length and mineralisation remains open along the moderately plunging trend to the north.Govisou and Angovia 2 deposits are hosted by Palaeoproterozoic Birimian Supergroup rocks of the Bouaflé Greenstone Belt.Govisou gold deposit is hosted by a diorite intrusion surrounded by metabasalts. Mineralisation is thought to be associated with both NE and NW striking, subvertical structures but forms a diffuse volume that is almost circular in plan view, about 90m in diameter and plunging at about 60 degrees toward the NNW. Gold is associated with low concentrations of finegrained disseminated pyrite and phengite alteration. Quartz veining is rare.Angovia 2 deposit comprises gold mineralisation associated with pyrite disseminations and veinlets hosted in chloritecarbonate-silica altered metabasalts. The deposit strikes E-W in an anastomosing shear zone and extends over about 550m strike, with mineralisation controlled by brittle-ductile shears that mainly dip south at 50-60 degrees. Subsidiary northdipping structures also appear to occur.The Govisou pit shell is approximately 300m in diameter and extends to a maximum depth of 120m. The Angovia 2 pit shell extends over 600m strike E-W and to a maximum depth of approximately 120m.Addition of the CMA underground to the Yaouré Gold Mine has the potential to extend the LOM and increase the annual ounce production profile by substituting low grade open pit feed with higher grade underground Ore Reserves.The CMA gold deposit occurs near the south-eastern flank of the Bouaflé greenstone belt in central Côte d’Ivoire. Mineralisation is hosted by Paleoproterozoic aged metabasalts of the Birimian Supergroup. The rocks are metamorphosed to lower greenschist facies and only locally feature penetrative deformation fabrics. Gold mineralisation is associated with quartz-albite-carbonate veining in reverse fault structures, forming a series of interconnected lodes the best developed of which dip at 25 to 30 degrees to the east. The CMA Underground resource comprises five lodes with horizontal widths ranging from 2-3 metres up to 15-20 metres. Ninety per cent of the Indicated Resource tonnage and 93% of the Indicated Resource contained metal is hosted in two principal lodes. Gold is associated with disseminated pyrite within veins and altered wall-rocks. No significant concentrations of other economic metals or deleterious elements are known to occur within the mineralisation. Arsenopyrite and molybdenite occur in trace quantities. CMA underground Mineral Resource extends from the designed base of the CMA open pit at approximately 200 metres vertical depth, to a maximum vertical depth of approximately 275 metres for Indicated Resources and 425 metres for Inferred Resources. The corresponding down-dip extents beneath the pit design base are approximately 200 metres and 350 metres. The Mineral Resource extends over 1,200 metres in strike length.The combined deposits extend over an area around 1.4 km east-west by 2.1 km north-south.
