Sydney, Feb 4, 2009 AEST (ABN Newswire) - Citadel Resource Group Limited (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 six reverse circulation ("RC") drill holes of the continuing 36 hole drilling program.
All holes intersected significant gold mineralization from surface, or near surface. Results include 32m at 15.22 g/t Au from 36m (SH067RC) including 13m at 35.61 g/t Au from 42m (SH067RC), 16m at 2.59 g/t Au from 5m (SH069RC), 14m at 2.17 g/t Au from 30m (SH070RC), 9m at 1.22 g/t Au from 38m (SH071RC), 20m at 3.92 g/t Au from 59m (SH072RC), and 12m at 1.63 g/t Au from 78m (SH075RC).
The high grade gold intersection of drill hole SH067RC (32m at 15.22 g/t Au) suggests that the high-grade gold zone previously defined on Section 5425N by holes SH049RC (28m at 14.17 g/t Au) and SH052RC (41m at 22.75 g/t Au) is still open to the east. This development significantly enhances the chances for further extensions of this particular high grade "shoot" and will be further targeted. This particular high grade zone is up to 40m thick, at least 80m wide and may have a strike extent of 150m. This shoot, intersected by SH067RC, remains open to the east and down plunge to the south.
Citadel's drilling program over the past four months has discovered multiple "stacked" gold zones within the Shayban deposit. Several high-grade gold "shoots" similar to the shoot intersected in SH067RC have been delineated within these zones significantly increasing the potential of the prospect. Citadel will continue to define these shoots within the Shayban deposit.
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, 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 in excess 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 propagates throughout the Shayban Shear Zone. More 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 are 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: +61-400-039-664
ines.scotland@citadelrg.com.au
| ||
|
