Projects

• Projects Overview
• Gold:
  • Yamarna
  • Central Bore
• Uranium:
  • Thatcher Soak
  • Yamarna Regional
• Other Commodities:
  • Yamarna Nickel
  • Yamarna Chrome / PGE
  • Yamarna Iron

Yamarna Gold

(100% interest subject to separate royalty agreements on some tenements).

The Yamarna Project (~4,500 km²) is located about 140km east of Laverton on the eastern edge of the Yilgarn Craton, controlling the very prospective Yamarna Shearzone and greenstone belt.

Since Eleckra listed on the ASX in July 2006 the Company has completed twelve drilling programs, including four RC, three RAB and three Aircore drilling programs at Yamarna, drilling in excess of 42,000 metres.

The Company has obtained excellent drilling results extending the gold mineralisation along strike both to the north and south around its updated resource of 749,000 ounces of gold (13.1 mt at 1.78 g/t Au). This resource estimate excludes the recent high grade discovery at Central Bore.

Highlights - RECENT Drilling

Central Bore Prospect - 2010 Reverse Circulation Program:

• Fourty eight RC holes drilled for 8,100 metres;
• Strike length 800 metres;
• Maximum hole depth with gold intercept 290 metres;
• Significant RC intersections include:-
• 3 metres at 136g/t Au from 192 metres; including 1 metre at 404g/t Au;
• 2 metre at 53g/t Au from 104 metres; including 1 metre at 105g/t Au;
• 2 metres at 21g/t Au from 188 metres; including 1 metre at 40g/t Au;
• 2 metres at 41g/t Au from 201 metres; including 1 metre at 70g/t Au;
• 4 metres at 16g/t Au from 157 metres; including 1 metre at 49g/t Au;
• 6 metres at 9g/t Au from 290 metres; including 2 metre at 18g/t Au;

Central Bore Prospect - 2009 Reverse Circulation Program:

• Thirty nine RC holes drilled for 3,905 metres;
• Significant RC intersections include:-
  • 4 metres at 60.9g/t Au from 64 metres; including 1 metre at 182.8g/t Au, 1 metre at 48.4g/t AU and 1 metre at 11.0g/t Au;
  • 1 metre at 123.7g/t Au from 35 metres;
• 3 metres at 25.6g/t Au from 75 metres; including 1 metre at 72.85g/t Au
• 2 metres at 26.5g/t Au from 100 metres; including 1 metre at 41.99g/t Au;
• 2 metres at 22.1g/t Au from 152 metres; including 1 metre at 33.0g/t Au;
• 3 metres at 8.8g/t Au from 57 metres; including 1 metre at 24.7g/t Au;
• 2 metres at 11.2g/t Au from 46 metres; including 1 metre at 19.5g/t Au;

 

Alaric 2:

• Fifteen RC holes drilled for 2,123 metres;
• Five drill fences, strike length of 150 metres;
• Maximum hole depth of 198 metres;
• Significant RC intersections include:-
• 10 metres at 8.87g/t Au from 52 metres;
• 2 metres at 10.92g/t Au from 102 metres; including 1 metre at 18.82g/t Au;
• 1 metres at 12.65g/t Au from 67 metres;
• 1 metres at 13.26g/t Au from 108 metres;

Khan North:

• Six RC holes drilled for 594 metres;
• Two drill fences;
• Significant RC intersections include:-
• 2 metres at 8.0g/t Au from 73 metres; including 1 metre at 12.95g/t Au;
• 6 metres at 2.6g/t Au from 60 metres; including 1 metre at 9.21g/t Au;
• 5 metres at 2.9g/t Au from 37 metres; including 1 metre at 9.24g/t Au;
• 6 metres at 2.5g/t Au from 33 metres; including 1 metre at 8.70g/t Au;
• 1 metres at 8.7g/t Au from 23 metres;
• 2 metres at 4.5g/t Au from 64 metres;

Project Review

Yamarna has the defined Attila - Alaric corridor gold resource occurring within a regional scale mineralised gold trend termed the Yamarna Shear Zone. The presence of a major deep-crustal shear zone and associated complex structural corridor is considered to have positive implications for the formation of major gold deposits. Much of the Archaean bedrock at Yamarna is obscured by a thin veneer of windblown sand and Permian sediments. Whilst making exploration challenging, the cover and isolation has resulted in Yamarna being one of the most under-explored greenstone belts in WA. The Company believes there is significant scope to discover more gold mineralisation at Yamarna given the lack of intensive historical exploration activity.

The Company has assembled a substantial regional tenement package that allows exploration in the belt for the first time to be approached in a systematic manner. Since its ASX listing, Eleckra has advanced a number of grass roots gold targets with some success, but there remain many that still require a first pass test and many which warrant further drilling to determine their significance.

The discovery of the potentially multi-million ounce gold deposits beneath transported cover at Tropicana 100km to the south of Yamarna highlights the potential existing in this poorly explored region on the margin of the Yilgarn.

New exploration license applications were lodged and granted, targeting gold over interpreted southern extensions of the Yamarna fault zones, between Yamarna and the Tropicana gold deposits, which we have called the Golden Sands Project.

Yamarna Resources

• Resources within 17km strike length of 500km long Yamarna Shear Zone
• Large gaps in drill coverage
• Potential for strike extensions
• Over half strike length untested
• Recent drilling has extended mineralisation at depth and along strike

Yamarna Mineral Resource Summary

Metallurgical Testwork

Eleckra conducted metallurgical testwork on diamond core from the Attila Gold Deposit in 2009. The purpose of the testwork was to determine amenability of oxide, transition and fresh sample zones to Heap Leach and Carbon-In-Leach processing.  All three sample zones displayed amenability to gold recovery via conventional cyanidation, with high gold recoveries achieved after grinding to Carbon-In-Leach size ranges 75 microns.

The transitional and oxide zones displayed amenability to heap leach processing with in excess of 90% recovery recorded at coarser crushed size fractions.  Preliminary bottle roll leaching characterisation indicated the presence of coarse gold in all three sample zones as evidenced by the large variations in head grades as well as between the different size fractions. The summary of gold recovery for each of the domains is presented in the table below.

Gold Recovery Summary:

All samples displayed characteristics associated with the presence of coarse gold, particularly in the oxide material, while the primary zone material recorded a 96.9% recovery when ground to 75µm showing its very good amenability to carbon-in-leach processing. 

Given that the leaching characterisation testwork found the gold to be free milling and readily leachable at coarser grind sizes column leach testwork is also planned to assess the various heap leach specific properties such as percolation rate and reagent consumptions.

Yamarna Regional Targets

Within its tenement holding, outside of the Attila - Alaric area, the Company has a suite of gold targets, ranging from conceptual ones to early stage prospects with some surface and RAB geochemical anomalism, as well as advanced prospects with ore grade intersections.

RAB, Aircore and RC drilling programs were implemented at several of these prospects. Targets tested since listing include Khan North, Elvis, Dorothy Hills, Hann, Augusta, Central Bore, Tobin Hill, Wanderrie and Byzantium.

Golden Sands

The Golden Sands Project comprises of several recently granted exploration licences. The area is located in the southern extension of the Yamarna shear zone between the Yamarna gold project and AngloGold Ashanti / Independence Group’s Tropicana gold project. The Golden Sands Project has not been explored previously for gold.

The Tropicana gold project has commenced a feasibility study drill-out, and the Joint Venture reported a revised mineral resource estimate of 75.3mt at 2.07g/t Au for 5.01 million oz Au on 23 January 2009.

The Golden Sands project area now totals about 1,500km² in area and covers a strike length of about 65kms. The southern boundary of the tenements is about 25km from the Tropicana and Havana deposits. Gold anomalism is known at the Augusta and Bluebell prospects at the northern end of the Golden Sands tenements within the Yamarna shear zone.

Eleckra has interpreted Tropicana as being located at the southern extension of the Yamarna Shear where it intersects the northeast trending Albany-Fraser Province.  Geochemical trends and high-grade drill intercepts reported at Tropicana appear to indicate a north-western trending component to the mineralization which is coincident with a trend of the Yamarna Shear (Figures 4, 5, 6).  The Tropicana Deposit is located along an ancient collision zone between the Yilgarn Craton and the Albany Frazer Province and it is possible that gold mineralisation at Tropicana area is hosted by Archaean rafts and it has been remobilised from the Yamarna Shear.

Based on the reported similarities in the rock types and alteration between the gold mineralization at Yamarna and Tropicana Eleckra believes that the Golden Sands project is highly prospective for gold mineralisation. Due to the large area of the Golden Sands project (approximately 65km x 35km) a comprehensive and systematic regional geochemical, geophysical and geological work will be required over the tenements in this frontier region.