Summary
- Polymetallic discovery by Tertiary at Targets A1: silver-copper-zinc. Near surface (0-15m) mineralisation, over 350 by 300m area, open to north & to a depth of 82m vertical (open at depth). Recent drilling includes:
- 66m at 26 g/t Ag, including: 20m at 40 g/t Ag.
- 57m at 0.27% Cu, including 8m at 0.74% Cu.
- Located 20km east of the Kalengwa copper-silver mine, one the highest-grade copper deposits ever mined in Zambia and now being brought back into production by Moxico.
- Extensive historic dataset generated by BHP Billiton and FQM, including regional soil geochemistry and airborne geophysics (magnetics, radiometrics, electromagnetics and gravity).
- 2 historic boreholes drilled on the licence, the latter targeting the top of an IOCG target: 33m grading 0.24% copper from 122m downhole (hole ending in mineralisation).
- Multiple exploration targets identified from data review, both sedimentary copper and IOCG style.
Geological Setting
Located in the IOCG region of central Zambia. The project is underlain by metasediments (sandstones, shales) which are intruded by the Musondweji granite (related to the Pan-African Hook granite). Ferruginous conglomerates and ironstones outcropping around granite margin.
Recent Exploration
- Historic exploration (regional soil geochemistry, airborne magnetics, radiometrics, electro magnetics and gravity) reviewed and targets ranked. Historic drilling reviewed and re-assed where possible. 6 high priority targets identified.
- 572 soil samples taken to support and check historic geochemistry.
- Initial scout aircore/reverse circulation drilling undertaken for a total of 2,390m over 42 holes over targets A1 and C1.
Target A1
Significant soil geochemical anomaly: copper-in-soil anomaly 3.1 by 1.5km, co-incidental zinc- and silver-in-soil anomaly over 1km by 0.3km.
Drilling identified near surface (<15m) mineralization over an area of approximately 350m by 300m and open still to the north. Mineralisation is intercepted to a depth of 82m vertically and is open at depth still.
Drill results include (down hole, not true widths):
- 57m at 25 g/t silver, 0.20% copper, 15% zinc from 14m downhole (24TMNAC-004).
- Including: 26m at 36 g/t Ag, 0.20% Cu, 0.20% Zn from 45m downhole.
- 65m at 23 g/t silver, 0.14% copper, 0.27% zinc from 9m downhole (24TMNAC-005).
- Including: 5m at 73 g/t Ag, 0.16% Cu, 0.31% Zn from 69m downhole.
- 66m at 26 g/t silver, 0.13% copper, 0.26% zinc from 13m downhole (24TMNAC-006P).
- Including: 20m at 40 g/t Ag, 0.21% Cu, 0.40% Zn from 23m downhole.
- And: 27m at 26 g/t Ag, 0.10% Cu, 0.19% Zn from 52m downhole.
- 37m at 24 g/t silver, 0.11% copper, 0.34% zinc from 46m downhole (24TMNAC-008P).
- Including:19m at 27 g/t Ag, 0.09% Cu, 0.16% Zn from 64m downhole.
- 63m at 14 g/t silver, 0.15% copper, 0.11% zinc from 7m downhole (24TMNAC-015).
Target C1
Significant soil geochemical anomaly: copper-in-soil anomaly 3.4 by 1.25km, co-incidental with a gravity anomaly on the margin of an intrusion. This represent an IOCG target of BHP Billiton in the 2000s but not followed up.
Earlier, historic drilling in the area (1 hole: RKN800) intersecting stringer sulphide mineralisation from approximately 122 m to the End of Hole (EOH) at 155 m. Resampling of the hole returned: 33m grading 0.24% copper from 122m, with the hole ended in mineralisation. Modelling of the gravity data suggests the anomaly from approximately 200m depth.
Initial drilling targeted the western end of the copper-in-soil anomaly and west of historic drill hole, (7 AC holes total of 212m, maximum hole depth is only 50m). Drill results include (down hole, not true widths):
- 3m @ 0.11% Cu from 29m (24TMN-016)
- 3m @ 0.12% Cu from 28m (24TMN-017)
- 2m @ 0.10% Cu from 28m (24TMN-018)
Depth of mineralisation in this part of the anomaly expected around 120m downhole.
