Oropa Limited (ASX: ORP)
ASX
RELEASE
6 AUGUST 2008
Drilling
re-commences AT HUTABARGOT JULU targeting new high-grade geochemical anomalies
Highlights
? Drilling commences at Hutabargot Julu prospect
targeting southern extension of the Sarahan vein.
? Initial focus on a large multi-element soil
geochemical anomaly at the extrapolated intersection of the Sarahan and Ali
veins (soil samples including 12.8g/t Au and 22g/t Au).
? Several other soil anomalies generated from recent
geochemical sampling.
Emerging gold company Oropa Limited (ASX Code: ?ORP? ?
?Oropa?) is pleased to announce that drilling has re-commenced at the
Hutabargot Julu Prospect at its 75%-owned Pungkut Gold Project in North
Sumatra, Indonesia. The drilling will test a number of promising new targets
generated by a multi-element soil geochemical sampling program conducted at the
high-grade Sarahan epithermal vein system.
Hutabargot Julu has been Oropa?s primary regional
exploration target over the past nine months, with programs testing
intermediate-sulphidation epithermal quartz and massive silica alteration in
veins interpreted to extend over a strike length of up to 3km.
Epithermal systems often host rich gold mineralisation,
as is evidenced elsewhere in Indonesia in low-sulphidation deposits at P.T.
Newcrest?s Gosowong and Kencana projects on Halmahera Island, P.T. Antam Tbk?s
Pongkor mine in West Java, ARC Exploration?s Cibaliung deposit south of
Pongkor and Oz Minerals? world-class 6 Moz gold high-sulphidation Martabe gold
and silver deposit, located 70 km north of Pungkut.
Vein textures at Hutabargot Julu indicate that little
erosion has occurred within this system, creating a suitable environment for
high-grade gold mineralisation to be preserved beneath the moderately
mineralised outcropping quartz veins. The length, width, orientation and
continuity of veining within the prospect area indicate a very large system,
with the potential to host massive gold accumulations.
Most of Oropa?s exploration to date has focused on the
central Sarahan vein, where significant vein outcropping was partially tested
by a number of historical Dutch adits excavated early last century. Oropa?s
shallow drilling has concentrated on outlining the orientation of the vein,
with all drill holes intersecting moderate gold mineralisation.
The Ali vein, located to the west of Sarahan, was
discovered during this campaign with five drill holes completed in this area.
The southernmost drill-hole (HUTDD018) returned a bonanza grade intercept of 5m
@ 37.7 g/t Au from 47m, after the earlier drill holes had encountered
patchy gold mineralisation further to the north of HUTDD018.
The program demonstrated that deeper drilling was
required to adequately test the mineral potential of Hutabargot Julu. A
multi-element soil geochemical sampling program incorporating 100m line
spacings and 50m sample intervals was implemented to establish the presence of
strong alteration zones. Values greater than 1g/t Au and significantly higher
than background (median 0.02 g/t Au) were returned, as summarised below:
Table 1:
Best results Hutabargot Julu soils
Notes
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1. All assays determined by 50gm fire assay with AAS finish by Intertek-
Caleb Brett Laboratories of Jakarta
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2. Coordinates in HUTLG local grid system
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These results have outlined several anomalous areas, the
most prominent of which is Sarahan South, located south of the Simalagi
River. Geological mapping
following up on two +5 g/t Au rock outcrop samples situated within the anomaly
identified massive silica alteration and veining. Interpretation of the
geological mapping of this area suggests that this anomaly is coincident with
the extrapolated convergence of the Sarahan and Ali veins, creating an ideal
structural environment for substantial mineralisation.
The Sarahan South +0.1 g/t Au soil anomaly extends over
150m, with maximum values of 12.8 g/t Au 22 g/t Ag being recovered.
Elevated anomalous lead, silver, arsenic, antinomy and molybdenum values are
indicative of a major fluid up-welling zone and a high priority target for deep
mineralisation.
Diamond drilling has recently commenced at Sarahan South
targeting this massive silica alteration. Vein textures indicate the existence
of primary gold in the area. Initially, systematic shallow vertical drilling is
planned, prior to follow up deeper angle drilling.
Soil
sampling along the central Sarahan vein has identified a soil anomaly in the
northern parts of the existing drilled area. A maximum value of 2.78 g/t Au was
observed within a broader coherent 0.1 g/t Au geochemical anomaly, and
partially offset from a lead, silver,
arsenic, antinomy and molybdenum anomaly.
At the North Ali vein, high gold values in soils of 3.4
g/t and 1.17 g/t Au warrant follow up geochemical sampling and geological mapping,
which may determine whether the gold is associated with primary regolith, or
supergene enrichment.
The South Ali vein trending towards Sarahan South
is characterised by minor anomalous gold and other element soil values,
possibly indicating an increase in hydrothermal alteration. This geochemical
anomaly has been prioritised for follow up drilling, taking into account the
bonanza gold intersection in hole HUTDD018 to the northwest of the anomaly. A
drilling program is planned for this area, subsequent to the South
Sarahan shallow drilling program being completed.
Figure 1: Gold contours from Hutabargot Julu
soil grid
Figure 2: Weighted multi-element Cu, Pb, Zn,
Ag, Sb, Mo contours
Yours
faithfully
OROPA
LIMITED
Philip
C Christie
Director
It is
advised that in accordance with the Australian Stock Exchange Limited Listing
Rule 5.6, the information in this report that relates to Exploration Results is
based on information compiled by Mr. Dean Pluckhahn, Mr Rod Jones and Mr John
Garlick who are Members of the Australasian Institute of Mining and Metallurgy.
?
Mr. Pluckhahn is a full time
employee of Oropa Ltd?s 75% owned subsidiary company P.T. Sorikmas Mining
(?Sorikmas?) and Mr. Jones is a full time employee of Sorikmas. Mr.
Pluckhahn and Mr. Jones have sufficient experience which is relevant to the
style of mineralisation and type of deposit which is under consideration and to
the activity which they are undertaking to both qualify as ?Competent Persons?
as defined in the 2004 Edition of the ?Australasian Code for Reporting of Exploration
Results, Mineral Resources and Ore Reserves?. Mr.
Pluckhahn and
Mr. Jones both consent to the inclusion in this report of the matters
based on their information in the form and context in which it appears.
All
statements in this report, other than statements of historical facts that
address future timings, activities, events and developments that the Company
expects, are forward looking statements. Although Oropa Ltd, its
subsidiaries, officers and consultants believe the expectations expressed in
such forward looking statements are based on reasonable expectations, investors
are cautioned that such statements are not guarantees of future performance and
actual results or developments may differ materially from those in the forward
looking statements. Factors that could
cause actual results to differ materially from forward looking statements
include, amongst other things commodity prices, continued availability of
capital and financing, timing and receipt of environmental and other regulatory
approvals, and general economic, market or business conditions.
READ
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