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CURRENT
TO SEPTEMBER 14, 2004
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Figure
1: Satellite Image of the Dachang Project Area
Golmud
(pronounced "Geermu") is a new industrial city located on
the plateau in central Qinghai. Close to the borders of
the Gobi Desert and the Kunlun Mountains at an elevation
of 3,000m, the city is strategically situated in the Golmud
River valley, which provides the primary access route into
Kunlun Mountains of southern Qinghai and the Autonomous
Region of Tibet. With a population of 150,000 the city has
experienced construction and heavy equipment contractors
and an infrastructure supported by modern road, rail and
air service to the capital Xining and the rest of China.
Situated
on the Qinghai Plateau at an elevation of 4,500m the Dachang
Project area is accessible by four-wheel drive vehicles
along paved and gravel roads to the property a distance
of approximately 250 kilometres.
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Figure
2: Geology Map of the Dachang Project Area
The
Dachang Project Area is underlain by a sequence of Mesozoic
sandstone, slate and limestone of the Bayankara Mountain
Group. This sequence of sedimentary rocks has been intensely
folded and fractured along a northwesterly trending axis.
The property lies on the northern flank of the Apeng'eliqu
anticline, which tends northwesterly along the southern
boundary of the property. The dominant structural feature
in the area is the Gaude MaduoThrust Fault, which trends
northwesterly across the area and transects the center of
the property. This thrust fault is parallel to and cuts
the northern flank of the Apeng'eliqu anticline and is believed
to be the major controlling factor for the gold deposits
on the property. Numerous northeasterly trending cross faults,
such as the Zhayejia fault offset the sedimentary sequence.
Granodiorite, an intrusive is exposed east of the property.
The
topography generally reflects the underlying geology. The
faults, representing major fracture/breccia zones, are less
resistant to weathering and erosion and define the river
valleys in the area. The erosion of the sediments is generally
uniform across the sequence; however, the more silicified
the units are more resistant to erosion. These units tend
to represent low ridges parallel to the strike of the overall
sedimentary sequence.
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Figure
3: Satellite-Airborne Magnetic Image of the Dachang Project
Area
All
rocks are composed of minerals and all minerals have their
own magnetic susceptibility or fingerprint. For example,
magnetite a principal mineral of iron ore has a high magnetic
susceptibility. In contrast, limestone generally contains
no magnetic minerals and would therefore have a low magnetic
susceptibility. As a result of this basic principle, rocks
can be identified by their magnetic fingerprint.
Figure
3 illustrates areas of different colors from white to green
to red. White to light green represents areas underlain
by rocks having relatively low magnetic susceptibility and
red represents areas underlain by rocks having relatively
high magnetic susceptibility. The entire Dachang property
exhibits various shades of white to light green. Inter-Citic's
consulting geophysicis believes these various shades represent
individual rock units within the sedimentary sequence mapped
on the property. In the immediate area surrounding the Dachang
property there are three distinct red areas; one located
immediately southwest, one small area immediately northeast,
and one larger area comprising a number of discrete red
clusters immediately east of the property. Inter-Citic's
consulting geophysicist believes that these red areas are
the magnetic fingerprint of an intrusive, probably part
of the same intrusive. Geological mapping east of the property
has identified a granodiorite intrusive associated with
this magnetic fingerprint. The significance of this observation
is that Inter-Citic's consulting geologists believe that
this intrusive is the source of the gold at Dachang and
was the heat pump, which initiated the convection currents
of the gold bearing solutions within the faults and fracture
zones identified in Figure 2.
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Figure
4: Satellite Geochemical Composite Image of the Dachang
Property
Figure
4 illustrates the results of three geochemical surveys complete
over the area and on the property, overlain on the satellite
image. The orange contour lines are similar to those on
a topographic map; but in this case, instead of representing
increases in elevation these contour lines represent increases
in gold concentration based on the results of a regional
stream sediment sampling program. The lowest contour line
represents a gold concentration of 2.5ppb and the highest
contour line represents a gold concentration of greater
than 10ppb. The second layer of data is represented by various
shades, ranging from orange to yellow. Each color represents
an increase in the concentration of gold from a low of 4ppb
to greater than 240ppb. The final layer represents the results
of a detailed soil geochemical survey over a portion of
the property and illustrates numerous blue zones, which
identifies 28 individual gold zones within the survey area.
It is significant to note the scale of the map; the area
outlined by the contour lines and the subsequent orange
to yellow infill areas cover over 100km2 or approximately
40 square miles. This is a very large gold bearing area,
which has been traced northwesterly for over 25km, approximately
15 miles and is coincident with the Gaude Maduo fault.
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Figure
5: Satellite Geochemical Composite Image of the Southeastern
Portion of the Dachang Property.
Figure
5 is a close-up of Figure 4 and focuses on the southeastern
portion of the Dachang property. The size and extent of
the gold anomalies becomes very clear and the significance
of the 28 individual gold zones becomes clearer. It is significant
to note that the density of the individual gold zones identified
in blue in the central portion of the survey area is very
high and abruptly stop to the southeast only to pick up
again approximately 5km further to the southeast. The explanation
for this rest in part because of the elevation of the property
and in part because of inability to of the Chinese geologists
to collect samples in this area. At Dachang the ground is
permanently frozen (permafrost) for most of the year, which
make makes collecting soil sample very difficult and in
the particular area discussed above the Chinese were not
able to collect useable samples because of the environment.
The significance of this fact is that there is strong evidence
to suggest that the 28 gold zones identified in the central
portion of the survey area continue southeasterly for an
additional 5km where similar geology and mineralization
has been identified.
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Figure
6: Detail of Several of the 28 Mineralized Zones
Figure
6 details several of the 28 gold bearing zones and focuses
of three zones referred to as Zones 9, 10 and 11. These
zones are located in the central part of the image and represent
the longest continuous zone(s) defined by trenching, over
5km. The rust colored lines represent trenches, which have
been excavated across the zone (s) to expose the geology,
determine the width of the gold bearing zone (s) and the
on-trend continuity of the gold zone (s).
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Figure
7: Detail of Western Portion of Gold Zones 9, 10 and 11
Figure
7 details the western portion, approximately 2.5km length,
of gold Zones 9, 10 and 11. Several sets of data are shown
on this figure. The prefix "Z" designates a diamond drill
hole, the prefix "T" designates a trench and the prefix
"QJ" designates an exploration shaft. The work on this portion
of the zone (s) discovered potentially economic gold grades
over mineable widths and exhibits exceptional continuity
along strike of the 2.5km of the zone (s) tested to date.
Given the encouragement the Chinese completed a mineral
resource estimate for the entire 5km length of zones 9,
10 and 11 defined in part by drilling and in part by trenching
trenching. Dr. George Cargill, Inter-Citic's independent
consulting geologist review the Chinese estimate and focused
his review on the 2.5km length defined by drilling and reported
a 43-101 compliant inferred resource of 5.7 million tonnes
averaging 7g/t gold (approximately 1.3 million ounces).
This inferred resource was based only on the results up
to and including the 2002 exploration program. The results
of the 2003 program were not received until after Dr. Cargill
completed his review; however, the results of the 2003 program
greatly increased the confidence in Dr. Cargill's review.
The significance of this inferred resource is that it represents
only a 2.5km section of three (zones 9, 10 and 11) of the
28 gold zones identified on approximately 10km2 of the 275km2
property area; most of the area is regionally anomalous
in gold.
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Figure
8: Gold Histograms along drill hole on the Western Portion
of Gold Zones 9, 10 and 11
Figure
8 shows the direct relationship between the gold intersected
in trenches and drill holes and the gold geochemical anomalies.
The results strongly indicate that where gold geochemical
anomalies have been identified follow-up trenching and drilling
will intersect gold. This is extremely valuable exploration
tool and supports Inter-Citic's belief that the property
has excellent gold exploration potential.
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Figure
9: Actual Histograms of the Drill Hole Assays on Zones 9,
10 and 11
Figure
9 shows the direct relationship between the gold geochemical
anomalies and the gold zones discovered by trenching and
drilling. Hole Z-11101 located on the far right portion
of the image was one of the better drill holes, completed
in 2003, on the property, which intersected 58.2 m averaging
5.3g/t gold and included 4.3m averaging 22.6g/t gold (See
Press Release of
January 8, 2004).
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Figure
10: Detail of Typical Intersections on Zones 9, 10 and 11
Figure
10 details typical assays from various mediums on the western
portion of Zones 9, 10 and 11. In this image "ZK" refers
to drill holes "TC" and "CY" refers to trenches and "QJ"
refers to exploration shafts.
Click
on the map above for a larger
version.
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