Melbourne, Feb 23, 2009 AEST (ABN Newswire) - Citadel Resource Group Limited's (ASX:CGG) is pleased to announce that it has received further high-grade assay results from the second drilling program at the Company's 100%-owned Shayban Gold Project in Saudi Arabia. Gold assay results have been received for a further four reverse circulation ("RC") drill holes of the completed 36 hole drilling program.
All holes intersected significant gold mineralization from surface, or near surface. Results include 35m at 13.48 g/t Au from 9m including 10m at 32.70 g/t Au from 11m (SH068RC), 11m at 1.83 g/t Au from 40m and 6m at 3.21 g/t Au from 59m (SH074RC), and 2m at 4.52 g/t Au from 34m (SH076RC). Silver and base metal results are pending and should be available in a further four weeks.
Citadel's drilling program over the past four months has delineated multiple "stacked" gold zones within the Shayban deposit. Several high-grade gold "shoots" have been intersected within these zones significantly adding to the prospect's credentials. Citadel will continue to define these shoots and explore for further resources over the coming months.
Drillhole SH068RC (35m at 13.48 g/t Au) further defines the near surface northern zone of high grade gold intersected in previous holes such as SH052RC (41m at 22.75 g/t Au) and SH031RC (39m at 37.8 g/t Au). This particular zone is up to 40m thick, at least 80m wide and remains open both down plunge and to the east with the most easterly hole SH067RC returning 32m at 15.2 g/t Au. This high grade zone exhibits excellent continuity in both grade and thickness, internally and at its margins.
The Shayban Project
The Jabal Shayban deposit is hosted within a sequence of highly prospective, weakly metamorphosed, felsic to intermediate volcanoclastics that includes subordinate units of chert and marble. This sequence is, in turn, locally intruded by a suite of dioritic and syenitic intrusions. Exploited by ancient miners, the Shayban prospect area is marked by an extensive zone of alteration and gossanous outcrops.
The mineralisation at Shayban forms south plunging, generally westerly dipping, semi-continuous lodes that are currently open down plunge, down dip and along strike. Within the prospect area mineralisation mainly occurs within the northeast-striking "Shayban Shear Zone", a locally significant deformational zone that is mapped for in excess of 2.5km in the immediate area.
The lodes are boudinaged out along the Shayban Shear Zone with an attenuated, "pinch and swell" morphology, traceable for more than of 600m along plunge. Within these attenuated horizons several high-grade gold, sulphide-rich "shoots" have been intersected. These variably boudinaged "shoots" can have strike extents of up to 150m, a dip extent of about 70m and a maximum true thickness of 30m.
There are three main mineral phases recorded at Shayban, the first and most important, is a gold-rich volcanic-hosted massive sulphide (VHMS) event marked by the presence of conformable massive to semi-massive sulphides and associated stringer and disseminated sulphides. This style of mineralisation consists of anhedral pyrite-chalcopyrite assemblages hosted by strongly black chlorite-altered epiclastic units and accounts for much of the contained gold at Shayban.
The secondary mineral phase comprises auriferous euhedral pyrite disseminations that are hosted by light grey sericite-altered epiclastic rocks. It appears to be structurally controlled by the Shayban Shear Zone and postdates the massive sulphide phase. Locally, this stage contains high gold grades that have been hydrothermally remobilised along the shear zone. The third mineral phase is a late-stage, high-grade, quartz-telluride gold bearing vein system that locally ropagates throughout the Shayban Shear Zone. Detailed petrological studies are in progress.
Wadi Shugea Regional Exploration Potential
Jabal Shayban is contained within Citadel's Wadi Shugea project which covers 203 sq km's of the highly prospective Neo-Proterozoic Ariab-Samran-Shayban volcanic belt. The Ariab-Samran-Shayban volcanic belt extends for greater than 1000km from the Nile Valley in Sudan, north-eastwards across the Red Sea into Saudi Arabia. The belt is associated with several significant gold and base metal mines, from Sudan (Hassai gold-rich VHMS deposit (+2Moz)) in the south through to the Mahd Adh Dhahab (Cradle of Gold deposit +5Moz) and Citadel's Jabal Sayid deposits to the north. The VHMS and precious-metal epithermal deposits of the Ariab-Samran-Shayban mineral belt form a world-class mineral province that is likely to deliver further discoveries in the near future.
In addition to containing Citadel's advanced Jabal Shayban and Jabal Baydan deposits the Wadi Shugea project contains numerous other, less explored prospects and occurrences that include gossans, ancient workings, anomalous geochemistry and geophysical anomalies. Citadel considers the potential for the discovery of both base-metal and gold-rich VHMS and epithermal precious-metal deposits within the Wadi Shugea project to be high and has planned an aggressive exploration program for the year ahead.
Contact
Citadel Resource Group Limited
Ines Scotland (CEO)
Tel: +61-3-8680-4609
ines.scotland@citadelrg.com.au
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