The Wilsons gold deposit is located 15km north-northeast of the historic Gidgee mill. The current Mineral Resource Estimate for the Wilsons deposit is 2.27Mt @ 5.4g/t Au for 391,500oz above a 1.0 g/t cut-off (Inferred and Indicated) (refer to ASX announcement 12 July 2019).
Gold mineralisation occurs in three lodes hosted by sheared, strongly silica-carbonate-biotite-pyrite-arsenopyrite altered metasedimentary rocks in the footwall to the Wilsons dolerite. The three lodes, named from north to south Wilsons 1, Wilsons 2 and Wilsons 3, occur within a 700m section of the Wilsons Shear Zone and have individual strike lengths of ~120m, 100m and 80m respectively. The deposits have been mined historically by three open cuts to a depth of ~60m. The mineralisation has been drilled to vertical depths, below surface of 570m (Wilsons 1), 470m (Wilsons 2), and 450m (Wilsons 3) with widths varying between 2 and 15m (Figures 1 & 2).
Gold mineralisation in all three lodes plunge to the west-northwest and are open down-plunge, providing significant potential to increase the size of the MRE with further drilling. The current interpretation indicates the possibility for lodes 1 and 2 to coalesce at depth providing potential to increase the strike of the lode mineralisation. Repetition of high grade (>8g/t Au) domains within the plunging shoot geometries will be a high priority target for future drilling. There is also potential for repetition of the lodes along strike to the north and south. Significant intercepts (>95 Au gram x metres) from the Wilsons deposit include:
- 9.0m @ 19.3g/t Au from 360.0m (TTDD051)
- 12.0m @ 12.3g/t Au from 163.0m (TTRC189)
- 16.5m @ 8.3g/t Au from 371.8m (TTDD370W1)
- 9.0m @ 14.6g/t Au from 127.0m (AGDD0018)
- 9.4m @ 13.1g/t Au from 235.8m (AGDD0022)
- 9.7m @ 12.2g/t Au from 308.4m (AGDD0068)
- 18.0m @ 5.9g/t Au from 149.0m (TTDD022)
- 7.1m @ 13.9g/t Au from 154.0m (AGDD0013)
- 12.2m @ 8.0g/t Au from 525.5m (TTDD403W1)
(1.0g/t Au lower cut-off, maximum 3m internal waste – refer to Horizon Gold Limited ASX Announcement dated 15 February 2021 )
Metallurgical testwork completed by Panoramic Resources Limited on the gold-arsenopyrite mineralisation at Wilsons identified a potential processing route to produce an oxidised flotation concentrate then low intensity magnetic separation to produce a gold concentrate. The concentrate is then finely ground and pre-conditioned under acidic conditions at moderate temperature prior to Carbon in Leach (CIL) achieving an overall metallurgical recovery of 87% to 90%. Further metallurgical test work is planned.
Exploration drilling will focus on defining additional high grade shoots along strike to the north of the current resource.
 Refer to Panoramic Resources Ltd ASX Announcement dated 27 June 2016 “Corporate Strategy and positive gold results”. CP P.Patrick
Figure 1: Wilsons Deposit Plan
Figure 2: Long Section of the Wilsons Deposit showing inferred ore blocks