White Lady Prospect
Summary | Geology | Geophysics
Summary
E25169 is a granted exploration tenement with an area of 66.3 km2 some 41km west of the Quartz Hill project. This has increased Newera’s exposure to the Harts Range region in the Northern Territory.
Figure 1: Location of White Lady (E25169) in relation to Newera’s Quartz Hill Project
Geology
The White Lady project lies well within the Harts Range metamorphics of the Eastern Arunta Block, in a belt of metamorphosed sediments that are now biotite-sillimanite schists and gneisses.
Several large scale pegmatite systems exist on the lease, in similar settings (late stage and mostly cross-cutting the gneissic layering) to the pegmatite systems Newera is exploring on its Quartz Hill Project leases. Like the Quartz Hill pegmatites these have been historically worked for mica and possibly contain uraniferous Rare Earth Element (REE) minerals.
EL25169 has numerous outcropping areas mineralised with copper carbonate (malachite) with co-incident gold showings, with samples collected recently grading up to 8.20% Cu and up to 1.7g/t Au. Previous sampling of many areas including some not visited by Newera returned similarly high results (tables 1 and 2).
Carbonate alteration, often associated with mineralisation and destruction of magnetism, is extensive.
Newera believes the tenement to be prospective for hydrothermal copper – gold mineralisation and for pegmatitic uraniferous REE minerals, and that the high background in uranium of the host gneissic material suggests the possibility of uranium enrichment.
Figure 2: Carbonate-epidote gneiss containing Malachite at E25169, Harts Range, NT. Sample 16910 (see Table 2).
Geophysics
Imaged aeromagnetic data indicates that EL25169 is located over a zone of high stress on a macro scale. The data shows the strongly magnetic character of the Harts Range gneisses in the region to be significantly degraded within the lease, associated with intense deformation, and is evidence of increased hydrothermal fluid flows.
This is accompanied by extensive carbonate alteration of the rocks which can be seen in the area.
Figure 3: RTP aeromagnetics, White Lady (E25169). Note destruction of magnetic intensity c.f. the trend of units.
Figure 4: U radiometrics, White Lady (E25169). Note uraniferous gneisses.
Figure 5: NTGS 1:250K geological mapping, White Lady (E25169). Compare gneiss disposition with figures 3 and 4.