ROBERTSON RANGE IRON ORE AND MANGANESE PROJECTS
Legacy's Robertson Range Iron Ore and Manganese projects are located 100 - 120 km east-north-east of Newman and near the Jigalong Community in the East Pilbara of Western Australia. The Company has three exploration lease applications covering 798.6 km2 in areas prospective for iron ore and manganese.
ROBERTSON RANGE IRON ORE PROJECT
Legacy's Robertson Range project is located 119 km east of Newman and 8 km east of the Jigalong Community (Figure 1) in the East Pilbara region of Western Australia. The Company has two exploration lease applications covering 410 km2. Legacy recently completed rock chip sampling as part of a reconnaissance field visit. Five samples confirm the presence of significant iron mineralisation outcropping at surface on ELA 45/3395. The projects have been named Jimjim and Jimjim Two. Based on the sampling and recently acquired satellite imagery additional prospective areas have been identified for follow up sampling and mapping.
Iron mineralisation of mainly massive and vuggy goethite was identified on two prominent topographic 'highs'; now called Jimjim and Jimjim Two. Jimjim and Jimjim Two occur in the south-western part of ELA 45/3395.
A total of five samples were taken, two grading 55.2% and 51.7% Fe on Jimjim, another two grading 53.1% and 47.9% Fe on Jimjim Two (Table 1).
|
Sample
|
Easting
|
Northing
|
Fe %
|
SiO2 %
|
Al2O3 %
|
Mn %
|
P %
|
S%
|
LOI %
|
|
RRS01
|
281629
|
7412866
|
53.13
|
9.55
|
4.36
|
0.68
|
0.067
|
0.12
|
7.57
|
|
RRS02
|
280833
|
7413772
|
47.88
|
17.13
|
2.48
|
0.16
|
0.029
|
0.448
|
9.17
|
|
RRS03
|
281998
|
7409487
|
14.48
|
65.26
|
6.11
|
0.86
|
0.04
|
0.164
|
1.98
|
|
RRS04
|
285798
|
7411360
|
55.2
|
4.64
|
5.57
|
0.01
|
0.008
|
0.055
|
10.09
|
|
RRS05
|
285878
|
7411453
|
51.68
|
7.87
|
7.22
|
0.01
|
0.011
|
0.041
|
9.6
|
All samples were analysed at Kalassay's Perth Assay Laboratory by X-Ray Fluorescence (XRF). Loss on Ignition (LOI) values were determined using Thermo-Gravimetric Analyses at 1000oC. Results are reported on a dry sample basis. Co-ordinates are located in AMG 84 - Zone 51.
The Jimjim anomaly is close to two projects currently being explored by FerrAus Ltd ("FerrAus"). Jimjim is located 39 km east from Davidson Creek Project and 30 km north-east of the Robertson Range Project where FerrAus recently reported a total resource of 150.1Mt at 58.7% Fe on these properties (5 Dec 2008 new release). Jimjim is also 24 km east of Hannans Reward's Mijimji Iron prospect which recently returned mineralised intercepts of 18 m at 59.2% Fe (10 December 2008 news release).

Figure 1: Robertson Range Project Location Plan
Tenement outlines currently under application are shown in red
Iron mineralisation of mainly massive and vuggy goethite was identified on two prominent topographic 'highs'; now called Jimjim and Jimjim Two. Jimjim and Jimjim Two occur in the south-western part of ELA 45/3395, currently under application.
Detailed satellite lkonos and Landsat imagery (Figures 2 and 3 respectively) over the tenement package has been purchased and processed by Earthscan. Processing of the lkonos imagery and Landsat ratios in the two south-eastern tenement delineated four manganese target areas and four "fault controlled" alteration zones of silica, sericite, goethite and smectite clays on E45/3394 and E45/3395.
Jimjim has a particular signature in the IKONOS imgery. In conjuction with the ground truthing, a total of fourteen areas of interest (magenta outlines in Figure 2) with a similar signature to Jimjim have been determined which will require follow up rock chip sampling and mapping.
Legacy conducted a field program in March to obtain an understanding of the geology and structure of the tenement and to determine the area's potential to host economic iron ore mineralisation. The program comprised follow up sampling and mapping on the target areas.

Figure 2: IKONOS satellite imagery over ELA45/3394 and 3395.
Interpreted faults (blue), iron targets (magenta), manganese targets (red/white) and fault controlled alteration targets (blue/white) are shown.
ROBERTSON RANGE MANGANESE PROJECT
Legacy's ELA 46/818 currently under application is 388.6 km2 and is located 100 km east-north-east of Newman an17km north of the Jigalong Community (Figure 1). The prospectivity for manganese is high with the Balfour Downs South and Windaroo Well deposits located 5.3 km and 9.5 km to the east, respectively. The prospect is also 27 km south-south-east of the Balfour Downs manganese locality.

Figure 3: LandSat bands 742 satellite imagery over ELA45/3394 and 3395.
Interpreted faults (blue), iron targets (magenta), manganese targets (red/white) and fault controlled alteration targets (blue/white) are shown.
The geology is dominated by the prospective Balfour Formation which is both outcropping and under alluvial cover. There is a central major drainage pattern draining to the north-west (Figure 4) which can obscure targets. The first phase of exploration is to conduct a field program to obtain an understanding of the geology and structure of the tenement and to determine the area's potential to host economic iron ore and mapping on the target areas identified from the LandSat and Quickbird imagery.

Figure 4: Geological Map of E46/818 (currently under application).
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Web page updated on 22 June 2009.