Encouraging Results From Pelangan Prospect Scout Drilling Program
News Release No. 07-05
Southern Arc Minerals Inc. (TSX Venture: SA) is pleased to report results from its scout diamond drilling program at the Pelangan Prospect located in its West Lombok Property, Indonesia.
The Pelangan Prospect is located approximately 1½ hours drive on good roads from Lombok's capital, Mataram. It lies on the northwest end of a 13 km long, northwest trending structural corridor of mineralization and alteration within which also lie the Selodong gold/copper porphyry Prospect and the Mencanggah epithermal/porphyry district, both of which are the targets of on¬going surface exploration.
Shallow scout drilling and surface mapping at Pelangan have defined extensive, structurally controlled, gold-mineralized breccia zones, occurring over an area of 3 by 2 km. These include the Tanjung-Jati, Kayu Putih, Raja, and Lala zones (see Figure 1). SA geologists apply the field nomenclature "Mineralized Structural Breccias" or "MSB"s to these targets.
The Pelangan Prospect is open to the south and east where additional mineralized breccias have been located and surface exploration is on-going.
Raja, Ratu & Lala Mineralized Structural Breccias
The Raja, Ratu and the Lala MSBs are located within the southern portion of the Pelangan Prospect. Zones of significant gold/silver mineralization have been intersected in 12 of 19 drill holes completed (see Table 1).
Highlights of drill hole intervals to date include: Raja MSB
|Drill hole QDG04:
||3.7 m @ 2.3 g/t Au
(including; 1.4 m @ 4.9 g/t Au)
4.3 m @ 2.1 g/t Au & 10 g/t Ag
(including; 2.5 m @ 3.2 g/t Au & 16 g/t Ag)
|Drill hole QDG06||1.0 m @ 7.36 g/t Au & 186 g/t Ag|
|Drill hole RDG01:
||10.7 m @ 2.9 g/t Au & 20 g/t Ag
(including; 4.7 m @ 5.8 g/t Au & 27 g/t Ag)
3.45 m @ 4.1 g/t Au & 64 g/t Ag
(including; 1.1 m @ 7.6 g/t Au from 63.2 m)
|Drill hole RDG02:
||6.1 m @ 2.4 g/t Au & 17 g/t Ag
(including; 3.5 m @ 3.8 g/t Au & 26 g/t Ag)
|Drill hole RDG03:
||6.3 m @ 2.5 g/t Au / 81 g/t Au
(including; 1.6 m @ 5.7 g/t Au / 50 g/t Ag)
12.1 m @ 2.3 g/t Au & 16 g/t Ag
(including; 3.15 m @ 4.8 g/t Au & 22 g/t Ag
|Drill hole RDG04:
||9.5 m @ 6.2 g/t Au & 41 g/t Ag
(including; 3.05 m @ 14.2 g/t Au & 61 g/t Ag)
|Drill hole RDG05:
||22.95 m @ 4.1 g/t Au & 17 g/t Ag
(including; 2.25 m @ 14.6 g/t Au & 10 g/t Ag
and 1 m @ 21.4 g/t Au & 23 g/t Ag)
|Drill hole RDG06:
|| 16.1 m @ 2.7 g/t Au & 23 g/t Ag
(including; 5.7 m @ 5.2 g/t Au & 30 g/t Ag)
|Drill hole RDG07:
|| 11.3 m @ 2.8 g/t Au / 22 g/t Ag
(including 1.6 m @ 6.6 g/t Au / 38 g/t Ag)
19.75 m @ 4.6 g/t Au & 28 g/t Ag
(including; 2.5 m @ 5.5 g/t Au & 28 g/t Ag
and 3.9 m @ 13.5 g/t Au & 22 g/t Ag
and 4.6 m @ 3.6 g/t Au & 24 g/t Ag)
|Drill hole RDG08:
|| 13.1 m @ 1.3 g/t Au & 15 g/t Ag
(including; 1.85 m @ 2.5 g/t Au & 16 g/t Ag
and 1.7 m @ 2.6 g/t Au & 27 g/t Ag)
|Drill hole RDG12:
|| 22 m @ 1 g/t Au & 14 g/t Ag
(including; 3.8 m @ 2.3 g/t Au & 13 g/t Ag)
The Raja MSB comprises a 1.7 km long north-northwest trending mineralized, linear breccias zone which has been subdivided by mapping into north, central and southern zones. The north-northwest trend of Raja is a secondary structure related to the dominant 320° orientation, which hosts numerous mineralized breccias and porphyry occurrences within the West Lombok Property. At surface the Raja MSB exhibits a 'pinch and swell' character with zones up to 20 metres in width.
Shallow drilling along the central and southern zones of the Raja MSB to date has confirmed continuity of gold mineralization with a 600 metre strike length between drill holes QDG06 and RDG07. Two holes have been completed on the northern extension of the vein and have intercepted significant quartz and sulfide rich zones, confirming the continuity of the structure north from the central Raja MSB. Assay results are pending for the two northern holes, RDG13 and 14 (see Figure 2).
All drill holes were cored at angles between 55° to 60°, and spaced at intervals between 50 to 150 metres along strike, and confirming a vertical to sub-vertical dip on the structure. Most of the mineralization was intercepted below the base of surface oxidation.
The program to date has confirmed the presence of extensive, near-surface gold mineralization within the central and southern parts of the Raja MSB. Drilling intercepts are of a comparable magnitude to earlier surface outcrop sampling.
Five of the 19 holes reported are located at the Ratu Zone. The 5 drill holes targeted extensions below high-grade surface rock-float at the Ratu MSB but failed to intersect major structures. The large volume of locally high-grade material located at the Ratu MSB is now believed to be derived from the Tanjung MSB. Narrow mineralized drill intercepts recorded at the Ratu MSB are related to "horse-tail" splay structures developed between the Raja and Tanjung MSBs.
First-pass mapping and sampling has recently been completed over the Lala MSB, which parallels the Raja MSB 350 metres to the east. Mapping has defined a series of mineralized structures oriented between north-northwest and east-west over a 1 kilometre strike. Mineralized structure exposures are comprised of outcrops up to 15 metres in width in the southern zone but generally are limited to discontinuous sub-crops to the central and northern zones. Preliminary assay results from 163 rock-chip samples collected to date show consistently high grades along the length of the Lala MSB. The average gold result from 163 rock-chips is 1.6 g/t Au with a peak result of 51 g/t Au (see Figure 2). A series of shallow drill holes is planned to test the down-dip extensions of these high-grade surface samples.
Tanjung-Jati Mineralized Structural Breccias
The Tanjung-Jati MSB is located in the western region of the Pelangan Prospect. Zones of potentially significant gold mineralization have been intersected in 8 of 13 drill holes completed within the Tanjung-Jati MSB (see Table 2).
Highlights of drill hole intervals to date include:
|Drill hole TDG01:||18.45 m @ 1.1 g/t Au & 4 g/t Ag;
(including; 1.6 m @ 4.1 g/t Au & 3 g/t Ag);
|Drill hole TDG02:||10.5 m @ 13.4 g/t Au & 8 g/t Ag;
(including; 2.3 m @ 47.9 g/t Au & 24 g/t Ag).
|Drill hole TDG03:||8.6 m @ 2.7 g/t Au / 4 g/t Ag;
(including; 2.95 m @ 6.1 g/t Au / 9 g/t Ag);
|Drill hole TDG06:
||4.6 m @ 3.1 g/t Au & 10 g/t Ag;
(including; 1.45 m @ 5.5 g/t Au & 10 g/t Ag);
|Drill hole TDG07:
||18.45 m @ 1 g/t Au & 7 g/t Ag;
(including; 1.2 m @ 6.6 g/t Au & 4 g/t Ag);
|Drill hole JDG03:
||9.2 m @ 5.9 g/t Au & 11 g/t Ag;
(including; 1.25 m @ 24.9 g/t Au & 7 g/t Ag);
9.05 m @ 1.6 g/t Au & 10 g/t Ag;
(including; 1.75 m @ 6.1 g/t Au & 28 g/t Ag)
Tanjung-Jati MSB comprises a 1.5 km long northwest trending structure divided by a central split to form Jati to the west and Tanjung to the east. The northwest trend of Tanjung-Jati parallels the dominant 320° orientation.
At surface the mineralized structural breccias exhibit a 'pinch and swell' character with zones up to 20 metres in width. Shallow drilling along the strike length of the zone has confirmed continuity to depths of around 50 metres with locally high-grade intercepts (see Figure 3).
All drill holes to date have been cored at angles between 55° to 60°, and spaced at intervals between 50 to 230 metres along strike, confirming a vertical to sub-vertical dip on the structural breccias. Most of the mineralization has been intercepted below the base of surface oxidation.
The program to date has confirmed the presence of mineralized zones with locally high-grade intercepts. Sub-surface intercepts are up to 15 metres wide showing good continuity along strike. Infill and deeper drilling will seek to locate more high-grade mineralization as significant areas along strike, which also host high-grade surface samples, have yet to be drilled. Drilling intercepts received so far are generally comparable in magnitude to previous outcrop sampling.
Kayu Putih Mineralized Structural Breccias
The Kayu Putih Mineralized Structural Breccias ("Kayu Putih MSB") is situated in the northern area of the Pelangan Prospect. Zones of potentially significant gold mineralization have been intersected in 9 of the 14 drill holes assayed within the Kayu Putih MSB (see Table 3).
Highlights of drill hole intervals to date include:
|Drill hole KDG003:||3 m @ 4.1 g/t Au
(including; 1 m @ 5.9 g/t Au)
|Drill hole KDG004:||11.4 m @ 9.6 g/t Au & 47 g/t Ag
(including; 1 m @ 71 g/t Au & 182 g/t Ag)
|Drill hole KDG012:||11.1 m @ 3.1 g/t Au & 8 g/t Ag
(including; 2.55 m @ 9 g/t Au & 16 g/t Ag)
4.1 m @ 5.9 g/t Au & 9 g/t Ag
(including; 1.1 m @ 18.1 g/t Au / 25 g/t Ag)
|Drill hole KDG013:||5 m @ 4.2 g/t Au & 15 g/t Ag
(including; 1.4 m @ 9.8 g/t Au & 21 g/t Ag)
Kayu Putih comprises two intersecting mineralized structures with east-west and northwest trends, over an area of 800 by 400 metres. The east-west oriented structure at Kayu Putih is inferred to be hosted within 'en-echelon ramp-structures', which can be associated with high-grade mineralization. At the Kayu Putih MSB, the en-echelon ramp-structures are developed between major, mineralized northwest trending structures that parallel the dominant 320° orientation which hosts numerous mineralized structural breccias and porphyry occurrences within the West Lombok Property.
Southern Arc has completed 17 shallow drill holes drilled on a north-south grid orientation at angles between 55° to 60° dip with variable spacing between holes. Final assay results are still awaited for drill holes KDG15to KDG17. The deepest mineralized intercept occurs at 59 metres vertically below surface and most intersections occur below the base of complete oxidation. Dips of the structures vary between 60° to 80°. The majority of drill holes are drilled perpendicular to the mineralized structures. Drilling at Kayu Putih has been spaced between 50 to 100 metre intervals (see Figure 4).
The program to date has confirmed the presence of near surface high-grade zones within the southern part of the mineralized structure. A 450 metre long strike zone between drill holes KDG02 and KDG12 shows the best potential for continuous high grade mineralization. Future drilling will test the down-dip extension of this zone for high-grade shoots.
A ground geophysical survey using CSAMT resistivity mapping techniques has been completed over the Pelangan Prospect. Survey results indicate depth continuity to the MSB structures as well as potential parallel zones south of the identified mineralization. Petrographic and fluid inclusion studies have also been undertaken to clarify the style of mineralization as an aid to further exploration.
TABLE 1. PELANGAN PROSPECT - RAJA / RATU
SIGNIFICANT DRILL INTERSECTIONS
|10.7m @ 2.93/20
4.7m @ 5.8/27
2.95m @ 1.72
0.5m @ 4.9
3.45m @ 4.13/64
1.1m @ 7.62/129
|9.15m @ 1.1/23
4.75m @ 1.8/9
6.1m @ 2.4/17
3.5 @ 3.8/26
|6.3m @ 2.5/81
1.6m @ 5.7/50
12.1m @ 2.3/16
3.15m @ 4.8/21.6
|9.5m @ 6.2/41
3.05m @ 14.2/61
3m @ 1.4/16
|22.95m @ 4.1/17
2.25m @ 14.6/10
1m @ 21.4/23
1.35m @ 1.6/13
|16.1m @ 2.7/23
5.7m @ 5.2/30
|11.3m @ 2.8/22
1.6m @ 6.6/38
19.75m @ 4.6/28
2.5m @ 5.5/28
3.9m @ 13.5/22
4.6m @ 3.6/24
1m @ 1.2/27
1.25m @ 2.7/24
|13.1m @ 1.3/15
1.85m @ 2.5/16
1.7m @ 2.6/27
|RDG09||384,903||9,028,142||327||50||-60||81||0-6.8m||6.8m @ 1.0/14|
incl. 3.8m @ 2.3/13
|QDG01||384,460||9,028,795||113||360||50||107.15||3.05-4.20m||1.15m @ 1.4|
|1.75m @ 3.5
1.35m @ 2.1
|QDG03||384,458||9,028,899||74||180||-55||54.50||42.55-44.10m||1.55m @ 1.9|
|3.7m @ 2.3
1.4m @ 4.9
4.25m @ 2.1/10.4
2.45m @ 3.2/16
|QDG06||384,526||9,028,861||99||90||-55||55.60||28.80-29.80m||1m @ 7.36/186|
TABLE 2. PELANGAN PROSPECT - TANJUNG/JATI
SIGNIFICANT DRILL INTERSECTIONS
|3.5m @ 2.1/9
1.2m @ 5.4/22
0.7m @ 1.6/4.2
18.45m @ 1.1/4
1.45m @ 2.5/3
1.6m @ 4.1/3
|10.05m @ 13.4/8
incl. 2.3m @ 47.9/24
and 1.9m @ 7.1/2
|TDG08||384,099||9,028,705||260||15||-60||57.3||23.5-25.1m||1.6m @ 2.5/20|
|JDG05||383,274||9,029,380||215||200||-55||104.6||66.9-68.45m||1.55m @ 1.4/7|
TABLE 3. PELANGAN PROSPECT - KAYU PUTIH
SIGNIFICANT DRILL INTERSECTIONS
|7m @ 4.4
1m @ 9.92 &
1m @ 18.0
|3m @ 1.8
2m @ 2.4
3m @ 4.1
1m @ 5.9
|11.4m @ 9.6/47
1.1m @ 26.8/217
incl. 1m @ 71/182
3.5m @ 1.8/5
|5m @ 1.0
1.5m @ 1.3
2m @ 1.7
|1m @ 1.2
1.9m @ 1.7
|5.3 @ 2.7
1.7m @ 5.1
|4.9m @ 1.2/14
2.0m @ 1.3
1m @ 2.59
2.50m @ 2.7
|11.1m @ 3.1/7.8
2.55m @ 9.0/16.2
1.20m @ 2.1
4.1m @ 5.9/8.8
1.1m @ 18.1/24.5
|5m @ 4.2/15
1.4m @ 9.8/21
4.25m @ 1.0
|1m @ 1.2/7
1.3m @ 2.1/7
6.3m @ 1.0/2
1.85 @ 1.75/2
Qualified Person and Quality Control and Assurance
The information in this release has been compiled under the supervision of Southern Arc's Vice President of Exploration Hamish Campbell B.Sc.Geology, MAusIMM. Mr. Campbell has over 23 years of international mineral exploration experience including 21 years in Indonesia during which he has held such positions as Exploration Manager, Senior Geologist and Consulting Geologist. Mr. Campbell has sufficient experience relevant to the style of mineralization under consideration and qualifies as a Qualified Person as defined in terms of NI 43-101.
All assaying of samples was undertaken by the ITS laboratory in Jakarta. ITS is one of the world's largest product and commodity testing, inspection and certification organizations. The Jakarta laboratory is ISO 17025 accredited and employs a Laboratory Information Management System (LIMS) for sample tracking, quality control and reporting.
On behalf of the Board of Southern Arc Minerals Inc.
President and CEO
Southern Arc Minerals Inc.
Suite 1500, Box 1078, 885 West Georgia Street, Vancouver, BC V6C 3E8 Canada
Telephone: (604) 676-5241 Fax: (604) 676-5246
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