Koorboora Project
Minerals
- Tin (Sn)
- Tungsten/Wolfram (W)
- Gold (Au)
- Silver (Ag)
- Copper (Cu)
- Zinc (Zn)
- Lead (Pb)
“With up to 7% Sn, Tennyson drilling confirms the theory of near surface low-grade high-volume deposit in tin bearing porphyry at Koorboora”.
(Pixie Hughes, BSc Joint Hons Geol/Geog MAIG)
Overview
The Koorboora mineral field, once Australia’s largest tungsten supplier, has a rich mining history dating back to the early 1900s, when it produced 20 tonnes of tungsten per month. This highly prospective area includes the Tennyson, Shakespeare, Two Jacks, and Neville mines.
Historical exploration
Historical reporting on the Koorboora mineral field provides useful information about exploration and mining production figures. These reports include CSR Ltd.’s extensive exploration program, which highlights numerous highly anomalous tin and gold assays. The program was abandoned when the tin price collapsed in 1984.
Value capture
John Nethery, a preeminent Chillagoe-based geologist with over 50 years of experience, collaborated with DCM to develop high priority 1,000m drilling targets for 2023. Drilling was completed in the second half of 2023, with excellent results indicating that additional exploration is justified at all four prospects. Some highlights of the 2023 drilling program are listed below.
- Tennyson (KB009)
Shallow drill results included: 1m @ 1710ppm Ag, 17.85% Pb, 9.88% Zn, 7.06% Sn at 19m.
From 17 to 30m a 13m interval @ 1.36ppm Ag and 0.5% Sn. - Two Jacks (KB001)
Shallow drill results included: 8m @ 0.38% Sn from 42m including 1m @ 0.76% Sn. - Neville (KB012)
Shallow drill results included: 11m @ 0.26% Sn, including 1m @ 1.88% Sn and 2m @ 1.54% W between 32 and 34m. - Shakespeare (KB007)
Shallow drill results included: 5m @ 0.12% Sn including 1m @ 0.32% Sn from 78m.
Dover Castle Metals is excited to move forward with the next phase of exploration, which will include additional targeted shallow surface drilling and surface work to better understand the structural geology.