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28 April 2009
HIGHLIGHTS
ONGAVA MULTI-ELEMENT PROJECT, NAMIBIA
Fieldwork ceased for the wet season from end of November.
3D modelling of the Border–Irvington lead-zinc-silver system:
► Confirms correlatability and predictability of mineralisation.
► Continuous planar zones of Zn-Pb veining parallel to faulting.
► To be used to calculate a JORC-compliant resource for Border.
Soil geochemistry programme:
► Final data processing currently underway.
► Raw data suggests a continuation of the Border-Irvington trend.
► Indicative of a much larger zinc-lead system
Frontispiece: Prominent hills comprised of the Elandshoek Formation, host to mineralisation at Border and Irvington,
during the wet season
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ONGAVA MULTI-ELEMENT PROJECT, NAMIBIA
The Ongava Project is located in Northern
Namibia (Figure 1). The Otavi Mountain
Land, bounded by the mining town of
Tsumeb and the agricultural towns of
Grootfontein and Otavi, is a historic world-
renowned mining region. Sabre’s licence
lies at the highly prospective centre of the
region.
In accordance with our agreements with
farmers in the region, fieldwork ceased for
the wet season at the end of November.
Recommencement of fieldwork is
presently hindered by a profusion of post-
wet season vegetation (see frontispiece).
However, during this time, data analysis,
integration, and 3-dimensional modelling
of the geology and mineralisation of the
Border deposit have been undertaken.
Figure 2 – The Ongava Multi-Element Project area (EPL 3542) within the Otavi Triangle as defined by the towns of Tsumeb, Grootfontein and Otavi. Major mines and prospects are labelled. Other prospects are represented by yellow dots (20km grid).
Figure 1 – Location of the Ongava Multi-Element Project, Namibia
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Border–Irvington Lead-Zinc-Silver System
Two work programmes are currently underway:
1. The compilation of a JORC compliant resource for the Border deposit, based on
drilling undertaken in 2008. The initial focus was development of three dimensional
wireframe models.
2. A soil geochemistry programme of approximately 12.2 km length that includes the
Border-Irvington system and areas along strike to the west. Around 5.6 km of strike
has been sampled to date.
1. Compilation of a JORC resource
At Border and Irvington, drill core data has been used to construct, with specialised software,
three-dimensional models of mineralisation, faulting and the host geological units. These 3D
wireframes are being used as a basis for the calculation of a JORC compliant resource.
Detailed scrutiny of drill core, drill core photographs, and geological, mineralogical, structural
and geotechnical logs has enabled development of an extremely robust, high-confidence
model.
Irvington
West Border
Border Main
ELA
ND
SHO
EKF
OR
MA
TION
T4 un
itT5 u
nit
Figure 3 – Aerial view of the Vulcan 3D triangulations for the Border-Irvington system. Pink lines = mineralisation. White lines (dotted) = siliceous fault zones. Blue lines (dotted) = hydrothermal breccia units. The contact between the T4 and T5 units of the Elandshoek Formation is the northernmost fault zone.
The 3D modelling shows that mineralisation and the host geological units form coherent,
laterally continuous, predictable features (Figures 3, 4, 5). Zinc and lead mineralisation occurs
in several planar zones of intense veining that are elongate parallel to the siliceous fault zones
(Figures 3, 4, 5). Mineralisation is overwhelmingly restricted to the massive dolomites of the T4
unit, and it often skirts the margins of late-stage hydrothermal breccia zones (Figure 3). As
expected, the breccia zones are lensoidal and elongate parallel to the fault zones.
Determination of the through-going nature of the mineralised zones and their relationships to
the host geological units is crucial in the development of an inferred resource at Border.
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Figure 3 – Oblique view, looking west, showing mineralisation (pink) dipping steeply northward. Mineralisation
throughout the Border-Irvington system is parallel to and near to the siliceous fault zones (white).
The exploration target for the Border deposit has been quoted by Sabre, based on historic
exploration, as:
12 Mt @ 5-6% Pb+Zn.
This figure was based on historic exploration efforts, with the estimate based on a drilling
depth to 300 m below surface. Sabre’s drilling to date has extended, on average, to around
100 m below surface. Additionally, it now appears that weathering has resulted in lower grades
in the uppermost 50 m. The tonnages intercepted by our first drill programme are therefore
expected to be around one third of the exploration target as we have only drilled to about one
third of the target depth, and grades will likely be lower because of near-surface weathering
effects. The corollary of this is that grades and tonnages are expected to increase substantially
when subsequent drilling intersects that part of the deposit located 100 m to 300 m below
surface.
In summary, Sabre’s exploration target for Border remains as stated above. The forthcoming
inferred resource will be considered to be an interim result for a deposit that is open to the
north and east, and is increasing in grade with depth. All indications are that the Border
deposit is only a small part of a much larger, hydrothermal mineralising system.
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Figure 4 – Cross section of the Border Main area, along line 8, looking east. Mineralisation (pink) is shown dipping steeply northward parallel to the siliceous fault zones (white). Minor mineralisation in the hangingwall is likely a function of the kink in the fault at this locality. Though mineralisation is not exposed east of Line 9 (second row of holes from front), it is clear that it is continuous beneath surface.
2. Soil geochemistry programme
The soil geochemistry programme (Figure 5) covers a gap in the regional dataset from the
Border deposit westwards. This area is very important due to the laterally extensive zinc and
lead sulphide mineralisation observed in outcrop by Sabre west of Border. To date, 1663 sites
in 28 lines over 5.6 km of strike have been sampled, covering the prospects of Nosib H,
Irvington and Border. This represents approximately 60% of the programme. The total
proposed programme will cover approximately 12.2 km of strike.
Figure 5 – Location of sample sites for the Antoray soil geochemistry programme, with the 2008 drill collar
sites in yellow.
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Data processing for the soil geochemistry programme is yet to be completed. Preliminary
analysis shows that there are distinct lead and zinc soil anomalies present at Border and
Irvington which have not previously been identified and characterised. This data will be useful
as a comparison with other anomalies. The anomalism appears to continue westwards from
Irvington along the line of hills beyond the limits of the 2008 drill programme. This is consistent
with the historic data, which was collected on the plains only and suggested that the hills
adjacent to the plains are anomalous in lead and zinc, and is again suggestive of a much
larger zinc-lead mineralising system.
Sabre will inform shareholders of the results of the soil geochemistry programme when
completed.
Yours faithfully, Norman Grafton Company Secretary Sabre Resources Ltd
For further information please contact:
Dr Matthew Painter, General Manager - Exploration Phone (08) 9481 7833
Or consult our website: http://www.sabresources.com/
Competent Person Declaration The information in this report that relates to Exploration Results, Mineral Resources or Ore Reserves is based on information compiled by Dr Matthew Painter, who is a member of The Australasian Institute of Geoscientists. Dr Painter has sufficient experience that is relevant to the style of mineralisation and type of deposit under consideration and to the activity that he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resource and Ore Reserves”. Dr Painter consents to the inclusion in the report of the matters based on his information in the form and context in which it appears.