Farrel Well Project
This project is currently under a Joint Venture agreement with Great Sandy Pty Ltd who are undertaking active exploration in search of gold and base metals.
The Farrel Well project is located approximately 100km south east of the town of Port Hedland. Access is via the Great Northern Highway and then the Marble Bar Highway, which crosses the project area. The project's eighteen contiguous tenements cover 742km2 and are prospective for Au, Ni, Cu, Zn and lead (Pb).
Background and Geology
Previous exploration at the Farrel Well project has highlighted potential for hosting Archaean lode gold deposits (e.g. Lynas Find), shear hosted deposits (e.g. Turner River), volcanogenic hosted massive sulphide deposits (e.g. Panorama) and layered mafic-ultramafic intrusion hosted nickel-copper-(PGE) (e.g. Radio Hill).
Several discoveries across the Pilbara have been hosted within the Cleaverville Chert or equivalent lithologies. The Shaw River tenement group at Farrel Well is dominated by these rock types where recent exploration has highlighted numerous priority targets which currently await drill testing. The presence of prospective geology and anomalous drilling results adjacent to craton scale deep crustal faults have been recognized globally as key ingredients for large discoveries. The Farrel Well area was the focus of much of Atlas' exploration activities in 2005 and Shaw River’s activity in 2007. This work concentrated on exploration for gold, base metals and nickel. In 2006, Shaw River collected over 2000 rock and soil samples as well as completing 1300m of RC drilling.
Low grade gold mineralization has been delineated by previous explorers at several prospect areas including Dom's Hill, North East Zone and Lukangus prospects.
In February 2007, Shaw River completed a 727m RC drilling program over untested sections of DOM’s Hill (Graeme Section) and NE Zone gold prospects in February of 2007. Results were encouraging for the continuity of low tenor gold mineralisation at both prospects (See Figure 3 Graeme). Results from the program included;
- 3m at 1.68g/t gold from 62 in SDHRC005
- 1m at 1.97 g/t gold from 57m and 1m at 2.87g/t gold from 74m in SDHRC004
- 2m at 1.89 g/t gold from 76m in SDHRC 002
- Confirmed consistent presence of 15-20m wide low grade gold envelope in prominent chert horizon.
- Mapping and logging confirmed short range structures controlling higher grades.
Work completed in 2007 year has greatly improved the geological understanding of the area, particularly in relation to regolith distribution and its effect on soil geochemistry. Furthermore, regional mapping outlined areas of significant alteration and structural complexity which require further sampling and mapping. Prospect scale mapping greatly improved the understanding of the setting of geochemical anomalies with indications of strong VHMS affinities, and these areas were included in the VTEM survey area which covered 163km2 of the project area. Farrel Well contains potential to host VHMS horizons similar to regional mineral deposits known in the east and west Pilbara, including the nearby Sulphur Springs project being developed by CBH Resources, just 60km to the south west of Farrel Well.
Drilling took place at Coongan and Pear Creek Prospects targeting base metal mineralisation. At Coongan, zinc mineralisation was encountered at depth, 60m below outcropping lead (galena) and silver mineralisation. Drilling intercepts included 4m at 1.2% zinc from 43m in SCRC003 which included 1m at 3.7% zinc. This formed part of a 16m wide zone of shearing and alteration containing 0.45% zinc from 35m.
Sampling and drilling has confirmed the validity of the VHMS base metal model with samples from a number of prospects returning anomalous base metal assays.
Table showing Base Metal anomalies at Farrel Well
|TARGET||BRIEF DESCRIPTION AND RESULTS|
|Coongan||Outcropping lead-silver mineralisation, surface samples up to 32g/t silver, 13% lead and 0.7% zinc reported. RC drilling in 2007 reported 4m at 1.4% zinc including 1m at 3.7% zinc. VTEM completed over the prospect area, with follow up planned during the last quarter of 2007(see Figure 4)|
|Edsel||Felsic sequence comprising rhyolites, tuffs, dacites and minor andesites, primary banded chert horizon, lead carbonate and manganese veining. Anomalous lead in soil values (>20ppm lead with maximum of 246ppm) over 600m strike length indicate potential for VHMS type system. VTEM completed over the prospect area, with follow up planned for the last quarter of 2007.|
|Anomaly 28N, 28S and Farrel Well Nickel||Felsic breccias, cherts and ultramafic rocks with anomalous soil geochemistry (co-incident copper-nickel anomalies) and rock chip samples (to 1.5% copper) indicate potential for VHMS type system. VTEM completed over the prospect area, with follow up planned to start during the last quarter of 2007.|
|Chrome Diopside||Mafic, ultramafic and felsic volcanics with complex structural controls. Quartz veins/stockworks with anomalous rock chip samples (1.8%lead, 0.7%zinc, 3.4% copper, 0.4g/t gold and 35g/t silver) occur along major north-south striking fault.|
|Pear Creek||Sequence of ultramafic volcanics with historical rock chip samples returning up to 2% nickel, 55% chrome and 880ppm copper. Ultramafic rich region with extensive ni-gossan development. Recent mapping identified further gossan occurrences.|
|Myrna’s Hill||E-W striking body with gossan development. Rock chip sample of 42.8% copper, 0.55g/t gold, 47.7g/t silver. Previous samples up to 7.5% copper and 6.5g/t gold in extensive quartz rich gossan in felsics and basalts. Historical drilling of 1m at 2.46g/t gold and 3m at 1.45g/t gold.|
This project is currently under a joint venture agreement with Great Sandy Pty Ltd who is undertaking active exploration in search of gold and base metals.
Great Sandy has conducted drilling on the property at Kalamazoo Prospect and earned in to 90% of all gold and base metal rights.