high grade silver huge numbers look

ASX ANNOUNCEMENT
24 July 2006
High Grade Silver Discovery at Sihayo 1 North
HIGHLIGHTS
• Reconnaissance drilling at the Sihayo 1 North Prospect
encounters high grade silver mineralisation
• Drill hole SHDD076 encountered several zones of gold and silver
mineralisation including:
�� 5m @ 238.75g/t Ag from 41m (including 1m @ 522g/t Ag
from 43m)
�� 5m @ 66.25g/t Ag from 54m
• Mineralisation is associated with intense hydrothermal alteration
and silicification of volcanic and limestone lithology.
• Hydrothermal alteration intensity appears to be getting stronger
towards the south
Oropa is pleased to announce drilling success at its Sihayo 1
North prospect, located in the North Block of its 75% owned
Pungkut Project, North Sumatra, Indonesia.
The Sihayo 1 prospect is geologically very similar to the Sihayo 1
North 610,000 Oz Au Inferred Resource, which is located
approximately 1km to the north of Sihayo 1.
Gold mineralisation defined at the Sihayo 1 North Resource and
elsewhere in the area is thought to be closely associated with a
large hydrothermal alteration system that is known to extend over
an area of 5km x 2km.
Precious metal mineralisation identified within the hydrothermal
alteration system typically occurs within a jasperoid unit, either
within Permian limestone or on the contact between younger
Tertiary sediments and Permian limestone. Mineralisation is also
found in intrusive hydrothermal breccia systems.
RECENT PUNGKUT PROJECT
ANNOUNCEMENTS
3 July 2006
More Gold Discovered at Sambung
27 June 2006
More Significant Drill Intersections at
Sambung Prospect
8 June 2006
Significant Gold Intersections in
Sambung Drilling
2 June 2006
Drilling Success at Sihayo 1 Prospect
18 April 2006
Increased drilling activities at Pungkut
Gold Project
CORPORATE
25 Charles Street
South Perth WA 6151
Ph: +61 8 9368 4544
Fax: +61 8 9368 4522
Email: [email protected]
www.oropa.com.au
ABN: 77 009 241 374
BOARD OF DIRECTORS
Brian Hurley Chairman
Phillip Christie- Director
Rod Murchison- Non-Executive
Director
Bruce Tomich Non Executive
Director
_________________________________________________________________________________________________
2 www.oropa.com.au
Silver mineralisation in SHDD076 is closely associated with an extremely altered
volcanogenic unit within altered limestone. Intense silicification and hydrothermal clay
alteration of this highly fractured unit indicates that the drill hole intersected a zone of
structural weakness, which has acted as a pathway for ascending hydrothermal fluids. It
is thought that these hydrothermal fluids deposited gold and silver mineralisation
throughout the system, with higher grades found in areas of concentrated or primary upflow.
The high grade silver mineralisation encountered in SHDD076 is unusual for the area, as
silver grades typically have a 1:1 relationship with gold grades. Hole SHDD076 ended in
an 18m cavity, thought to be a recent cave that has formed within the fractured and
altered limestone.
Oropa plans to follow up this exciting result with further drilling to establish the
orientation of mineralisation and its lateral and vertical extent.
_________________________________________________________________________________________________
3 www.oropa.com.au
Drill Intercept Table
Hole Local Significant Intersections
North
Local
East
Dip Depth
From To M Au g/t Ag g/t
SHDD072 9700 55868 -90 78 No significant intersections
SHDD073 9800 55811 -90 110 38 40 2 0.92
45 49 4 0.65
76 79 3 0.94
83 86 3 0.66
SHDD074 9743 55898 -90 86 18 26 8 0.75
SHDD075 9641 55900 -90 52.9 No significant intersections
SHDD076 9550 55900 -90 81.9 29 32 3 0.89
41 46 5 238.75
Including 43 44 1 522
48 53 5 0.74
54 59 5 66.25
SHDD077 9500 55800 -90 69.5 24 25.5 1.5 0.62
SHDD078 9550 56000 -90 68 No significant intersections
SHDD079 9650 56000 -90 82.5 6 11 5 0.82
26 27 1 2.14
_________________________________________________________________________________________________
4 www.oropa.com.au
Notes to Drill Intercept Table:
1. All Au assays determined by 50gm fire assay with AAS finish
2. All Ag assays determined by 50gm Aqua Regia with AAS finish
3. Lower cuts of 0.5ppm Au and 50ppm Ag used
4. A maximum of 2m of consecutive internal waste (material less than 0.5ppm Au) per reported intersection
5. All interval grades were calculated as a weighted average
6. All intervals reported as down hole lengths
Yours faithfully
OROPA LIMITED
PHILIP C CHRISTIE
Director
Note1: 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. Jim Kerr, who is a
Member of the Australasian Institute of Mining and Metallurgy. Mr. Kerr is a full time employee of Oropa Limited
and has sufficient experience which is relevant to the style of mineralisation and type of deposit which is under
consideration and to the activity which 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 Resources and Ore
Reserves”. Mr. Jim Kerr consents to the inclusion in this report of the matters based on his information in the
form and context in which it appears.
Note 2: 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.