Eleckra Mines Limited

Projects

Yamarna Gold

Yamarna tenement outline and Prospect locations
Yamarna tenement outline and
Prospect locations
View enlargement (189 Kb)

 

Projection of Attila - Alaric resource block
Projection of Attila - Alaric
resource block
View enlargement (116 Kb PDF)

 

Attila - Allaric Trend
Attila - Allaric Trend
View enlargement (161 Kb PDF)

Drillhole Cross Section - Attila 9160mN
Drillhole Cross Section
Attila 9160mN
View enlargement (76 Kb PDF)

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

The Yamarna Project is located about 140km east of Laverton on the eastern edge of the Yilgarn Craton.

Since Eleckra Mines listed and on the ASX in July 2006 the Company completed two RC, as well as two RAB and Aircore drilling programs at Yamarna during the 2006 - 2007 financial year spending a significant $2.2m on exploration.

The Company has obtained excellent drilling results extending the gold mineralisation along strike both to the north and south around its existing 740,000 oz Au resource base at Attila and Alaric. The Attila resource is being remodeled to incorporate results of this years drilling.

Highlights - Last 12 Months Drilling

  • Deeper drilling at Attila highlights extensions at depth below previous shallow drilling
  • Strike extensions of Attila and Attila North ore bodies confirmed
  • Best RC intersections include:-
    • 3m at 9.36g/t Au from 68m at Attila North (test potential for further mineralisation)
    • 6m at 5.45g/t Au from 53m at Attila (strike extension at north end of project)
    • 8m at 2.63g/t Au from 90m at Attila (northern strike and plunge extension)
    • 7m at 3.72g/t Au from 111m at Attila (depth extension at southern end)
    • 19m at 1.44g/t Au from 67m at Attila (depth extension of mineralised zone)
    • 3m at 4.58g/t Au from 24m at Alaric (infill drilling)
    • 2m at 10.3g/t Au from 19m at Khan North (new mineralised zone called Renegade)
  • Best RAB intersections
    • 1m at 12g/t and 15m at 0.5g/t at Augusta (4.8km long anomaly)
    • 4m at 6.56g/t and 4m at 2.04g/t Au (within Khan North Corridor)

A RAB drilling program at the KHAN NORTH prospect produced an intersection of 4m at 6.5 g/t Au from 22m and 4m at 2.04 g/t Au from 6m. At the same time some exciting new gold targets have been generated, with a hit of 2m at 10.3 g/t Au at the RENEGADE prospect.

At the AUGUSTA gold prospect drilling reported a best result of 12m at 1.24 g/t Au from 27m, subsequent infill RAB drilling at this prospect confirmed gold anomalism over a 4.8km strike length with peak gold values including 1m at 12 g/t Au and 15m at 0.5 g/t Au.

Project Review

Yamarna has the defined Attila - Alaric gold resources 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. In its first year at Yamarna a number of advanced to grass roots gold targets have been tested 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, targeting gold over interpreted southern extensions of the Yamarna fault zones, between Yamarna and the Tropicana gold deposits.

Yamarna Resources

  • Resources within 14km strike length of 180km 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
  • Resource calculation underway

Yamarna Mineral Resource Summary

Mineral Resources At 1.0 g/t Au Cut Off
Category 000t Grade g/t Au Ounces
Measured 2,380 1.73 132,000
Indicated 4,300 2.1 290,000
Inferred 5,900 1.7 310,000
TOTAL 12,600 1.8 740,000

Attila / Alaric / Khan North - Gold metallurgical test work returns excellent results, with recoveries from 21 composite samples from four deposits varying between 87.3% - 98.0% with an average of 93.5%.

Summary of 24-Hour Bottle Roll Metallurgical Test

Sample ID Hole Vertical
Depth
To (m)
Vertical
Depth
From (m)
Vertical
Interval
(m)
Weathering Prospect E_AGD84 N_AGD84 Calculated
Head (g/t)
%
Extraction
556580 EYRC01 39 49 10 Saprock- Fresh ATTILA 565,767 6,882,653 2.05 91.7
556581 EYRC01 68 74 6 Fresh ATTILA 565,767 6,882,653 1.70 90.0
556582 EYRC02 15 25 10 Saprock ATTILA 565,710 6,882,721 3.00 97.0
556583 EYRC02 52 63 10 Fresh ATTILA 565,710 6,882,721 1.06 89.6
556584 EYRC03 23 28 4 Saprock ATTILA 565,701 6,882,759 2.44 97.1
556585 EYRC03 58 75 17 Fresh ATTILA 565,701 6,882,759 1.02 91.2
556586 EYRC06 39 44 4 Transition-Fresh ATTILA 565,126 6,883,646 1.60 95.0
556587 EYRC07 46 51 5 Fresh ATTILA 565,200 6,883,670 7.32 89.3
556588 EYRC08 17 22 4 Fresh ATTILA 564,407 6,885,478 0.89 95.5
556589 EYRC08 37 44 6 Fresh ATTILA 564,407 6,885,478 1.50 98.0
556590 EYRC09 36 41 5 Fresh ATTILA 564,423 6,885,482 3.37 95.3
556591 EYRC11 59 62 3 Fresh ATTILA 564,461 6,885,391 1.43 96.5
556592 EYRC12 35 39 4 Fresh ATTILA 564,283 6,885,754 2.92 90.1
556593 EYRC13 71 76 4 Fresh ATTILA 564,258 6,885,746 3.67 96.5
556594 EYRC20 30 35 4 Saprock ATTILA NORTH 563,868 6,887,038 0.94 94.7
556595 EYRC23 45 50 4 Fresh ALARIC 562,720 6,891,080 2.05 87.3
556596 EYRC25 61 66 5 Fresh ALARIC 562,702 6,891,177 0.69 94.2
556597 EYRC26 37 42 4 Fresh ALARIC 562,665 6,891,272 2.85 91.2
556598 EYRC26 45 50 4 Fresh ALARIC 562,665 6,891,272 1.77 89.2
556601 EYRC30 33 35 2 Fresh KHAN NORTH 556,272 6,908,263 6.00 96.5
556601 EYRC31 22 26 4 Fresh KHAN NORTH 556,248 6,908,307 1.06 97.2
Maximum
Minimum
Average
                                7.32
0.69
2.35
98.0
87.3
93.5

The results from the bottle rolls show very good gold recoveries from all four deposits and from all weathering profiles. The recoveries vary from 87.3% to 98.0% with an average of 93.5%. These results are encouraging and support the results of earlier metallurgical test work.

Yamarna Significant Gold Results

Hole Interval Assay Depth Prospect
m g/t Au m
YRC 119 3 23.6 62 Attila
YRC 130 8 7.9 39 Attila
YAC 015 7 6.4 14 Attila
YARC 009 3 11.5 26 Attila
YAC 001 7 7.8 18 Attila
YARC 132 1 58.1 54 Attila N
YARC 048 3 35.9 80 Alaric
YARC 074 9 5.1 94 Alaric
YARC 068 2 24.4 63 Alaric
YARC 179 4 11.7 28 Alaric
YARC 303 37 8.2 40 Khan N
YARC 326 3 a 66 Khan N
YKJC 358 8 8.9 38 Breelya
BBRB 026 1 16.6 17 Ctrl Bore
EYRC 053 2 10.3 19 Renegade

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 during the year. Targets tested included Khan North, Breelya, Fuel Dump and Augusta, Central Bore, Tobin Hill and Wanderrie.

Khan North

Khan North and Renegade Prospects
Khan North and Renegade
Prospects
View enlargement (78 Kb PDF)

Augusta, Breelya, Fuel Dump Locations Aeromagnetics
Augusta, Breelya,
Fuel Dump Locations
Aeromagnetics
View enlargement (170 Kb PDF)

The Khan North prospect located 25km north of the Attila deposit was discovered during reconnaissance RAB drilling in 2003. Previous RC drilling included intersections of 37m (6m true width) at 8.2 g/t Au, 3m at 17.9 g/t Au and 2m at 11.8 g/t Au.

The gold mineralisation occurs in a sheared quartz porphyry unit, which is a different host rock to that hosting the Attila-Alaric deposits. RAB drilling carried out by the Company over a strike length of 4km across the interpreted position of the porphyry returned several anomalous zones.

The first phase of the Company's RC drilling at Khan North, totaling 14 holes for 994m was drilled below several of these RAB anomalies.

The best intercept was from line 37200N located 800m north of the Khan North deposit. This new prospect, called Renegade, returned 2m at 10.3 g/t Au and 3m at 3.87 g/t Au in EYRC055 from what is believed to be the same quartz porphyry unit which hosts the mineralisation at Khan North. These intersections are open down dip and along strike and will be followed up with additional drilling in due course.

Breelya

Breelya is located 45km along strike to the southeast of Attila within the Yamarna shear zone. Previous RC drilling by WMC within an anomalous zone 6km in strike length returned best intersections of 8m at 8.9 g/t Au (including 2m at 31.9 g/t Au) with follow-up along lines up to 400m apart that returned intercepts of 2m at 4.2 g/t Au and 2m at 1.74 g/t Au. The mineralisation is associated with a zone of extensive quartz-sericite-pyrite alteration of porphyry and dolerite.

Six RC holes were drilled on lines 100m either side of the high grade intercept in order to determine the extent and orientation of the mineralised zones. The drilling confirmed that broad low-grade and narrow higher-grade gold mineralisation is shear zone hosted, with mineralisation located along the contact of a northwest trending silicified granite porphyry and dolerite. The best result was 1m at 3.4 g/t Au. Further work will involve locating the focus of the mineralisation within this broad zone of alteration and mineralisation.

Fuel Dump

Fuel Dump is located 3km south of Breelya within sheared mafic rocks. The one RC hole drilled at the Fuel Dump prospect (EYRC065) confirmed the potential of the prospect intersecting 1m at 1.5 g/t Au, 1m at 2.45 g/t Au and 1m at 3.55 g/t Au. With the southerly strike extensions untested, the prospect is highly prospective. An associated surface gold-in-laterite geochemical anomaly could be a useful guide for further exploration within the prospect.

Augusta

The Augusta prospect is located 15km south of Breelya on a structurally complex section of the Yamarna shear zone. Aircore holes drilled by previous explorers on 200m centres on lines 800m apart returned a number of interesting results including 19m at 0.3 g/t Au, and 10m at 0.35 g/t Au.

The Company completed some infill RAB drilling which confirmed the anomaly over a 4.8km strike length, returning results of up to 1m at 12g/t Au and 15m at 0.5 g/t Au. Three RC holes on two lines 800m apart were drilled to test deeper bedrock mineralisation.

The holes intercepted narrow zones of +1 g/t Au mineralisation within broad zones of low-grade mineralisation and alteration. Mineralisation is predominantly hosted within a variable sheared gabbro / amphibolite with magnetite-carbonate ±pyrite alteration coincident with mineralisation. This alteration may prove to be a useful geophysical and geochemical tool for further exploration, especially to the east where the same stratigraphic unit is untested. Augusta is an extensive altered and mineralised zone which requires further testing.

Golden Sands

Golden Sands Project Tenements
Golden Sands Project Tenements
View enlargement (187 Kb PDF)

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

Eleckra has lodged new exploration license applications over the unexplored interpreted southern extensions of the Yamarna fault zones, targeting potential gold occurrences between Yamarna and the Tropicana gold deposits

Previous (pre Eleckra) limited exploratory RAB drilling in the very north-west of the Golden Sands project area confirmed the presence of gold within this part of the Yamarna shear zone.

Significant RAB intercepts were 4m at 0.18 g/t Au and 1m at 0.245 g/t Au.

These results warrant further drilling at this locality along with reconnaissance geochemical sampling of the Golden Sands project area, to be implemented after the granting of the tenements.

  • 500km2 of new applications between Yamarna and Tropicana gold deposits (1,500km2 in total)
  • Targeting extensions of Yamarna shear zones beneath sand cover
  • Reconnaissance geochemical sampling planned following grant

Other Significant Prospects Within the Yamarna Project Requiring Further Exploration:

Central Bore
Reconnaissance RAB drilling intercepted 1m at 16.6 g/t Au and 4m at 1.3 g/t Au. Area needs further work.
Hann
Located about 1km from and parallel to the Attila shear zone. Values of 3,650ppb and 2,050ppb Au located. Good potential.
Muirfield
Anomalous gold, 3m at 3.33 g/t, located at the Permian / Archaean unconformity. Further testing needed to find a primary source.
Dorothy Hills
Drill intercept of 1m at 2.33 g/t Au, within a north trending zone of mineralisation, coincident with a well defined magnetic unit.
Kingston Heath
Best result 2,050ppb Au, drilling defined an approximately 700m long anomaly, paralleling a NW trending fault.
Crowsfoot
Best result 2,037ppb Au, located within shear zone, mineralised trend remains open, very prospective.
Minnie Hill
Drill intercept of 4m at 2.00 g/t Au, multiple zones of mineralisation, under explored.
Pacific Dunes / Corkwood
Intercept of 4m at 1,790 ppb Au, partially tested, north - south trending anomaly.
Xena
Main intercept was 1,170ppb Au, open to the south and north, needs following up.
Landmark
Best anomalous value located was 1,540ppb Au, prospect structurally complex, requires further work.
Turnberry
Best drill intercept of 1,510ppb Au, drilling too widely spaced, a good potential exists here for further mineralisation.
Granodiorite South
Best intercept of 1,230ppb Au, prospect within the Yamarna shear zone, needs further work.
Other currently less advanced prospects within the Yamarna project showing a good potential are:
 
Grevillea / Beefwood
980ppb
Kingston North
890ppb
Tamerlane
880ppb
Snakebush and Stirling
880ppb
Wanderrie
4m at 0.87 g/t Au
Carnoustie
730ppb
Riviera
520ppb Au

Numerous other anomalous occurrences have been documented within the Yamarna Project, either by surface sampling or shallow drilling, all requiring future follow up.