New High Grade Gold Discovered at Windanya
- First pass aircore drilling completed at the 100% owned Windanya project area, 45km north of Kalgoorlie - Boulder in the Western Australian Goldfields
- Windanya sits within the prolific Bardoc Tectonic Zone, 15km north of the large-scale Paddington gold mine and 10km south of the 3Moz Bardoc gold project
- Drilling comprised 57 aircore holes, to a maximum depth of 76m, testing high priority new discovery targets between the 100% owned Capricorn prospect and the Eureka mine
- Discovery hole WAC20019 intercepted shallow, high-grade mineralisation within 35m of weathered quartz stockwork with results including:
- Initial drilling confirms the new discovery sits within a 3.3km long mineralised trend extending north and south with multiple targets yet to be tested
- The prospect, named Gemini, will now be followed up with RC drilling with further results expected in the June Quarter 2021
- Further aircore results are pending and drilling will continue across the new mineralised trend as part of the 50,000m 2021 exploration drilling program
New discovery drilling at Windanya forms part of the 50,000m exploration program for 2021 with 57 aircore holes completed for 2,097m to a maximum depth of 76m. The drilling targeted areas between the Eureka gold mine in the central area and the emerging 100% owned Capricorn prospect to the south (Figure 2*) where limited modern exploration has been conducted, particularly at depth.
Summary of Results
The aircore drilling program was completed in two parts during 2020 and 2021 due to rig availability. Several new targets had been generated and assessed during 2020. The priority target area was 1.5km north of the Capricorn prospect (Figure 2*) where ultrafine (-2mm) soil sampling had outlined a particularly high order (626ppb Au) anomaly against a background of <30ppb Au. The anomaly was coincident with a favourable NE fault structure which also appears to influence the soil anomaly.
Six aircore holes were drilled to refusal across this anomaly with the best results being found in WAC20019 including:
o 2m @ 26.68g/t Au from 35m
including 1m @ 39.71g/t Au from 35m
and 1m @ 13.66g/t Au from 36m
o 1m @ 2.59g/t Au from 40m
and 1m @ 4.88g/t Au from 46m
o 2m @ 4.99g/t Au from 67m
The gold appears to be hosted by a contact related, 35m wide quartz stockwork, within oxidised basalts and dolerite. Historic drilling appears to have been too shallow to effectively test the bedrock.
Two additional east-west lines were also drilled between WAC20019 and Capricorn as shown in Figures 2 and 3*. Both lines recorded shallow, anomalous hits (WAC21031 4m @ 0.19g/t Au and WAC21004 8m @ 0.47g/t Au & WAC21007 12m @ 0.23g/t Au) which suggest these holes also intersected a postulated north-south striking mineralised structure. This structure nominally extends 3.3km from the Eureka mine to the Aquarius anomaly, south of Capricorn (Figure 3*).
The Aquarius anomaly recorded several high order ultrafine soils (up to 623ppb Au) but remains to be fully tested. Five drill holes located just north of the Aquarius anomaly tested historic mineralisation in some old RAB holes (up to 5.0g/t Au), but these results could not be replicated. Significant amounts of quartz veining was observed, however deeper RC drilling is required to test these veins in the fresh rock, rather than in the depleted regolith.
Thirteen holes were drilled at the Scorpio prospect (Figure 2*) where historic drilling intersected minor gold (4m @ 0.64g/t Au proximal to a small soil anomaly). Eleven holes also tested a series of small, undocumented abandoned workings in an ultramafic rock 500m NW of Scorpio. Assay results are pending and further aircore and RC drilling is planned in the June quarter 2021.
The Windanya group of tenements are located on the western limb of the Mt Pleasant Dome, west of the Bardoc Tectonic Zone (Figure 2*). The stratigraphy comprises a N-NNW striking sequence of ultramafics (Siberia Komatiite), overlain by mafic volcanics and intrusives (the Big Dick Basalt, Mt Pleasant Sill (dolerite) and the Bent Tree basalt). The western part of the project area is dominated by large granite batholiths.
Mineralisation is typically hosted within moderate to steep dipping shears along the contacts. Historic mining exploited narrow (0.1m - 3.0m) quartz reefs which pinch and swell along strike and dip.
Commenting on the Windanya results, Horizon Managing Director Mr Jon Price said:
"To have hit such significant mineralisation in the first aircore program at Windanya is a fantastic result and testament to the quality of the target generation work completed in 2020 and full credit goes to our first-class exploration team. This region has had very limited modern exploration and is surrounded by quality large scale deposits to the north and south."
"The aircore program at Windanya will soon be followed up by RC drilling and we look forward to releasing further results from this very exciting region in coming weeks. The Windanya and Baden Powell areas are now demonstrating the potential for new resources to be established within easy trucking distance of the proposed Boorara processing plant being assessed as part of the consolidated Feasibility Study."
*To view tables and figures, please visit:
About Horizon Minerals Limited
Horizon Minerals Limited (ASX:HRZ) is a gold exploration and mining company focussed on the Kalgoorlie and Menzies areas of Western Australia which are host to some of Australia's richest gold deposits. The Company is developing a mining pipeline of projects to generate cash and self-fund aggressive exploration, mine developments and further acquisitions. The Teal gold mine has been recently completed.
Horizon is aiming to significantly grow its JORC-Compliant Mineral Resources, complete definitive feasibility studies on core high grade open cut and underground projects and build a sustainable development pipeline.
Horizon has a number of joint ventures in place across multiple commodities and regions of Australia providing exposure to Vanadium, Copper, PGE's, Gold and Nickel/Cobalt. Our quality joint venture partners are earning in to our project areas by spending over $20 million over 5 years enabling focus on the gold business while maintaining upside leverage.
Horizon Minerals Limited