ELIZABETH SPRINGS WEST PROSPECT
The Elizabeth Springs West (ESW) Prospect is a 1.3km by 1km coincident magnetic and gravity anomaly, within a broader 4km by 4km magnetic anomaly. Prior to the exploration work undertaken by Anglo American, Red Metal2 completed a gravity and magnetic survey before drill testing the magnetic anomaly (ESRM-04-01) intersecting 43.5m @ 0.13% Cu & 969ppm Ni from 445.5m in a magnetite-rich IOCG alteration system. The intersection was followed up in 2008 (ES-08-02, ES08-03) intersecting a large pyrite-rich hydrothermal alteration system associated with low-grade Cu and Ni (Table 1).
The Anglo American program followed up the two Red Metal holes which intersected low level copper mineralisation (ESRM-04-01, ES-08-03) intersecting multiple zones of low-grade copper mineralisation, with a broader intersection of 100.4m @ 0.12% Cu & 616ppm Ni from 953.6m (DTD001). The hole ended in a zone of trace sulphides and strongly magnetite-biotite altered metasediments. Highest sulphide content was within a hydrothermal breccia above a felsic sub-volcanic unit.
Step-out hole DTD003 intersected strongly altered metasediments, mafic intrusives, and porphyritic felsic sub-volcanics intersecting 48m @ 0.11% Cu and 801ppm Ni from 924m.
All four deep testing holes at ESW intersected low levels of copper mineralisation with associated elevated nickel and gold (see Table 1). These holes have only partly tested the 1.3km by 1km coincident magnetic and gravity anomaly, which represents only part of the broader magnetic anomaly (Figure. 1).
Selected diamond drilling intercepts include:
▪️ DTD001: 100m @ 0.12% Cu and 0.01g/t Au from 953m
▪️ DTD003: 48m @ 0.11% Cu and 0.8% Ni from 924m
Table 1: Significant intercepts from the Elizabeth Springs West. Note: 1000ppm (0.1%) Cu cut off; no more than 10m internal dilution1.
- Anglo American Exploration (Australia) Annual Report 2022 & 2023 – EPM27134 ↩︎
