Arc Exploration reports Indonesian mining ops

Friday, January 22 2010 - 08:01 AM WIB

The following is an edited excerpt from Australian mining firm Arc Exploration Limited (ARX)?s quarterly report released on Friday.

Trenggalek Project, East Java (ARX - 95%)
The company operates a joint venture with P.T. Sumber Mineral Nusantara, which holds the Trenggalek Exploration KP license covering an area of 30,044 ha in the Southern Mountains of East Java The Southern Mountains comprise an older segment of the Sunda-Banda magmatic arc (?Southern Mountains Arc?) and hosts numerous gold, silver, and base metal prospects, including Intrepid Mines? Tujuh Bukit porphyry copper-gold project located about 250 km east of Trenggalek.

The conversion of the Trenggalek KP to a Mining Business Licence (?IUP?) with Exploration Status was completed on 2 November 2009, and is in accordance with the new Indonesian Mining Law promulgated on 12 January 2009.

The Company announced in the previous quarter that it had entered into a strategic alliance with a leading drilling contractor in Indonesia. As a result of this alliance the drilling contractor will undertake a 5,000 metre diamond drilling program on the Trenggalek Project at its own cost in exchange for shares and options in ARX. The Drilling Agreement is a fixed priced contract valued at US$825,000 (approximately A$900,000). Drilling will commence in early 2010.

The primary targets of the drilling program are outcropping epithermal gold-silver-bearing veins identified on the Sentul, Buluroto and Kojan prospects, the source of high-grade vein float found on the Jati prospect, and high-level hydrothermal breccias and silica cappings identified on the Dalangturu and Suruh prospects. Most of these targets lie in production forestry areas and the processing of an access permit to undertake the drilling activity is nearly completed.

Further mapping was conducted on the Sentul Prospect to better define the distribution and surface grades of the known vein targets in preparation for scout diamond drilling.

Exploration expenditure at Trenggalek during the quarter totalled $92,000.

Bima Project ? East Sumbawa (ARX - 95%)
The company operates a joint-venture with P.T. Sumber Mineral Nusantara, which holds the Bima General Survey KP license covering an area of 24,980 ha in East Sumbawa, West Nusa Tenggara Province. The conversion of the Bima KP to a Mining Business Licence (?IUP?) with Exploration Status is progressing and is expected to be completed in early 2010.

Sumbawa island comprises a segment of the Sunda-Banda magmatic arc. It is host to the giant Batu Hijau porphyry copper-gold deposit and several major copper-gold prospects located on the western side of the island.

This highly prospective terrane extends into the Bima project area, which is underlain by Early Miocene to Pliocene intermediate-felsic volcanic and volcaniclastic rocks, fossiliferous limestone and high-level intrusions.

Assay results were received for 72 soil samples previously collected from the Kowo Prospect. Widespread low to moderate-level, base metal anomalism occurs in soil over a large zone (1.7km x 1.3km) of silica-claysulphide/limonite alteration and quartz-baryte-sulphide/limonite stockwork identified at this prospect. Results from the 72 samples averaged 68 ppm copper, 305 ppm lead, 383 ppm zinc and 2800 ppm barium. Gold results were generally low and contain some weak spot anomalies ranging from 0.026 ppm to 0.049 ppm gold. The results obtained to-date are encouraging and support the potential for a blind or covered porphyry copper-gold system in the project area. Infill soil sampling over the Kowo Prospect is planned.

An evaluation of the project area using remote-sensed imagery and ground verification will be undertaken. Exploration expenditure at Bima during the quarter totalled $3.000.

Aisasjur Project - Anglo Strategic Alliance (ARX - 20%)
The Company has a 20% interest in a strategic alliance with the Anglo American Group (Anglo) to explore for large porphyry copper-gold deposits in the Papua and West Papua provinces. The interest is fully funded by Anglo through to a development decision.

The ARX-.Anglo strategic alliance contains three KP?s covering a total area of about 610 square-kilometres in the Bird?s Head of West Papua. These KP?s form the Aisasjur Project and are located on the western end of the Medial Papua-New Guinea magmatic arc, which hosts the giant cooper-gold deposits of Grasberg and Ertsberg further east along the arc. Transfer of the Aisasjur KP?s to Mining Business Licenses (?IUP?) with Exploration is in progress.

No field activity to report during the quarter. Further field work is pending the completion of the transfer of the KP?s to IUP?s. (end of edited excerpt)

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