AustralasiaGold
Limited
ABN 93 104 757 904 |
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LACHLAN PROJECT, NEW SOUTH WALES
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Regional
Setting
The 100 km long Molong Volcanic Belt is a major element
of the Lachlan Fold Belt. The 400-450
million year old volcanics, limestones, associated sediments
and granitoid intrusions of the
Blayney-Orange District are handsomely endowed with gold and
copper-gold deposits of diverse style
and geological setting.
The Lachlan River Transverse
Zone is a west-northwest crustal
dislocation which appears to
have provided a conduit
for igneous intrusions and
mineralizing fluids throughout
much of the region’s geological
history, and it encloses many of
the better mineral deposits.
It also encloses the much
younger Mt Canobolas volcanic
centre and its surrounding
volcanic mantle. This thin sheet
of volcanic debris today
conceals the prospective rocks
of the Molong Volcanic belt in
the area of EL 6040.
Some of the gold deposits in
this suite of rocks and within 20 km of the Australasia
Gold tenement
include:
- Cadia Ridgeway - Resources and Production
= + 20 million ounces of gold.
Porphyry gold-copper deposits
- Browns Creek
- Resources and Production = + 1 million ounces of gold.
Skarn-hosted disseminated copper-gold deposit
- Lucknow - Production
= + 400,000 ounces of gold. High
grade gold in quartz-base metal sulphide veins
- Forest Reefs
- Production = +100,000 ounces of gold.
The exposure of three of these deposits
at the margins of the blanketing volcanics, gives encouragement
that additional mineralisation may be concealed by
the remaining basalt.
Lucknow Project
EL 6040 (82 sq km) covers rocks of the Forest Reefs
Volcanics and associated sediments and
intrusives in the area between the city of Orange
and Cadia-Ridgeway and Browns Creek gold deposits.
The EL is mostly covered by the Tertiary basalt
blanket described above, which has inhibited exploration
of the underlying Ordovician basement rocks.
Drilling within and to the west of the EL 6040
has indicated the thickness of volcanic material
over
much of its area is likely to be less than 50 metres.
Windows of older volcanic-suite rocks exposed
within the basalt area confirm a general thinning
of the volcanic blanket to the south and east
across the EL.
Magnetic surveys of the tenement area confirms
the continuation beneath the basalt, of geology
similar
to that of the mineralized areas outside the area
of basalt cover and consequently, prospectivity
for
deposits of similar styles as described above.
(The depleted Lucknow Mine is held by a third
party under Mining Lease Application (MLA 197 0.6
sq. km) .)
Previous exploration of the basalt-covered area
has been limited. Surface geochemical surveys have
successfully identified geochemically anomalous
levels of gold, arsenic, copper, and lead in both
the
western and central parts of the tenement. Significant
geochemical anomalies are also reported to
extend across the western boundary of EL 6040 from
the adjacent exploration licence.
Mineralised Prospects and Potential
The Summer Hill anomaly just north of EL 6040 contains
weakly mineralized, altered intrusives
potentially associated with a concealed porphyry
system. The Huntley Prospect in the central area
was
drilled in 1995. Its source was narrow gold-copper
vein mineralisation generally of the Lucknow style.
These discoveries confirm that the Ordovician rock
suite is prospective beneath the basalt veneer.
Program for the Lachlan Project
The blanket of volcanic cover, combined with the
major discovery potential and the diversity of
target
deposit style and setting of the project area requires
that the exploration net is widely cast.
During the first year it is the Company’s
intention to conduct drill-reconnaissance of targets
which can
be identified from the existing magnetic data and
geochemical database.
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