Tijirit area The Ator vein at the Tijirit area consists of gold-bearing quartz veins formed in the Proterozoic greenstone belt of the Reguibat Shield. NNE-SSW tectonic lines develop in this area, and gold-bearing quartz veins were formed along the fractures parallel to these tectonic lines. Characteristics of the gold vein at the Ator vein and vicinity of veins are the co-existence of copper mineralization composed of malachite, and a local existence of the high-grade gold ores over 10 g/t Au.
Exploration under the quartz veins in the Ator sector has not been conducted so far and the downward continuance of mineralization is still unconfirmed. No sufficient survey around the area has been conducted. Since there is a possibility that gold-bearing veins exist there, it is necessary to do the detailed geological survey in the area
Geochemical anomalies over 100 ppb Au are spread in the large region of 6km east to west and 8k north to south about 30km southwest of the Ator sector (OMRG, 1996a). NNE-SSW directed dykes and faults are revealed in this sector. The lithological facies are similar to those in the Ator sector. Based on a similar geological environment, existence of gold-bearing veins is also expected there.
The Tijirit West sector located about 110km southwest of the Ator sector, in the southeastern extension of the Tasiast area consists of the greenstone which spreading in NE-SW direction. Since geochemical gold anomalies are extracted in the area of 30km x 5km in this sector (Fig. 3.2), it is possible that hydrothermal quartz vein type and quartz network gold deposits similar to those of the Tasiast deposit also exist there. One of the promising areas is located here.
(3) The Akjoujt area The Guelb Moghrein deposit and the Tabrinkout prospect are hydrothermal copper and gold deposits formed in the Mauritanides. The deposits have replaced magnetite-bearing carbonate layer in the green schist. Coarse grains of magnetite occur in the green schist in the intercalated carbonate layer. Sulfide minerals of chalcopyrite and pyrrhotite occur as dissemination and veins around the grains of magnetite. At the surface, gold-bearing malachite quartz veins cut the green schist, and malachite disseminates in the carbonate rocks. At present, proven reserves are 23.6 million tons, and average ore grade is 1.88% for Cu, 1.41 g/t for Au, and 143 ppm for Co The top part of this type deposits is altered to silicified gossan, and they resist weathering. They form hills and hilly landscape penetrating a peneplain. In the 40km area between the Guelb Moghrein deposit and the Tabrinkout prospect, copper and gold prospects as El Khader (principal), El Khader (Breccia), El Joul Est and Anomaly A1 exist (Marenthier, 1997). Apart from the drill and trench works implemented at limited part of these prospects, a sufficient exploration has not been carried out here. In the nearest future, it is probable to discover good copper and gold mineralization replacing carbonate rocks. Therefore this area was also selected as promising. ====================================================== historical drilling by SHEILD MINING Results of the first pass historical drilling by the previous project owner Shield Mining included:
•6m @ 17.63g/t Au from 10m •6m @ 10.47g/t Au from 16m •2m @ 24.90g/t Au from 56m
Of the limited drilling within the project area the majority has been drilled to less than 50m vertical depth in places. Mineralised zones over 150m wide have been intersected in places. Since January 2011, the company has undertaken geological reviews of the Project. From these reviews the company undertook its first exploration programmes that included detailed airborne aeromagnetic studies, scope geological and regolith interpretations and ground mapping. A small 10 hole Diamond Drill programme was also completed to better define the geological understanding beneath the weathered horizon. From these studies, the company has generated its first gold targets which it will be testing with an initial 30,000m Reverse Circulation (RC) programme in the fourth quarter of this year.
GRY Price at posting:
88.0¢ Sentiment: Hold Disclosure: Held
