Golden Deeps Ltd (ASX: GED) has obtained new high-grade diamond drilling results and positive metallurgical testwork outcomes from its Nosib Prospect in Namibia’s highly-prospective Otavi Mountain Land Copper Belt.
Nosib Prospect – Exceptional High-Grade Critical Elements Drilling Results
The new drilling results include an exceptional intersection of critical elements, rare metals and rare-earth elements in NSBDD0014 from surface, which includes high-grades of copper (Cu), vanadium (V2O5), lead (Pb) as well as highly anomalous silver (Ag), molybdenum, (Mo), antimony (Sb), gallium (Ga) and rare earth elements (REE – measured as total rare earth oxides, TREO) (see below):
- 71.5m @ 3.0%CuEq* (1.0%Cu, 0.25% V2O5, 3.1% Pb, 4.7g/t Ag, 8.4 g/t Sb, 434g/t Mo) & 83g/t TREO Inc. 50m @ 4.1%CuEq* (1.2% Cu, 0.35% V2O5, 4.4% Pb, 5.7 g/t Ag, 12g/t Sb, 616g/t Mo) & 85g/t TREO Inc. 22m @ 7.2% CuEq* (1.8% Cu, 0.58% V2O5, 9.3% Pb, 8.4g/t Ag, 24g/t Sb, 1,186g/t Mo, 21g/t Ga Inc. 3.97m @ 10.8% CuEq* (1.6% Cu, 2.0% V2O5, 6.6% Pb, 82g/t Sb, 88g/t Ga) & 90g/t TREO
NSBDD0014 tested the central part of the Nosib prospect and was part of a 10-hole, 785m, diamond drilling program testing for extensions of the Nosib polymetallic (V-Cu-Pb-Ag +/- Sb, Mo, Ga, Ge, HREE) deposit on three, 20m-spaced sections to the west and a section to the east of the previously drilled zone.
The new diamond drillhole, NSBDD014, is immediately to the west of previous vertical metallurgical hole
NSBDD0081 which produced an exceptional overall intersection of:
- 53.52m @ 1.15% Cu, 0.62% V2O5, 3.49% Pb, 4.57 g/t Ag (3.6% CuEq*) from surface Including significant gallium and germanium results from surface:
- 8.70m @ 128 g/t Ga, 11.3 g/t Ge (1.84% Cu, 1.88% V2O5, 10.2% Pb, 3.6 g/t Ag) from surface Incl. 3.26m @ 189 g/t Ga, 14.7 g/t Ge (0.85% Cu, 0.70% V2O5, 4.64% Pb, 1.9 g/t Ag)
Copper mineralisation was intersected in diamond drillholes on all three step-out sections to the west, and one section to the east of the previously drilled zone, doubling the strike length of the mineralised zone to 200m.
Initial results from the first four step-out holes include thick zones of copper-silver mineralisation and highly anomalous heavy rare earth elements (HREEs) in the following intersections:
- 13.4m @ 0.4% CuEq* (0.35% Cu, 2.2g/t Ag) & 105 g/t TREO from 25m in NSBDD0011 Inc. 3.0m @ 0.9% CuEq* (0.8% Cu, 6.9g/t Ag) & 98g/t TREO, and,
Inc. 0.46m @ 3.7% CuEq* (3.3% Cu, 29.9g/t Ag) & 181g/t TREO
- 20.15m @ 0.3% CuEq* (0.24% Cu, 1.0g/t Ag) & 94 g/t TREO from 30.79m in NSBDD0013 Inc. 2.15m @ 1.1% CuEq* (1.0% Cu, 3.1g/t Ag) & 159 g/t TREO
Diamond drillhole NSBDD0017, the deepest hole on the second step out section, 40m to the west of the drilled mineralisation, intersected a 0.48m zone of massive to semi-massive copper sulphide mineralisation (incl. chalcopyrite, covellite and bornite) within a 50m intersection (from 36m down hole) of variably developed copper sulphide and oxide (malachite) mineralisation from 35m downhole.
This intersection indicates that higher-grade stratiform copper (+/- Ag, HREE) mineralisation is plunging shallowly to the west and remains open at depth.
Further results are pending for the remaining five holes in the program, which are expected within the next three weeks.
The results from the current drilling program will be incorporated into the maiden Mineral Resource model for the Nosib prospect which is being prepared by Shango Solutions of South Africa.
Samples from the large-diameter (PQ) metallurgical hole, NSBDD014, will be half and quarter cored, with the half core to be aggregated into a new metallurgical sample for further gravity concentrate and hydrometallurgical testwork to provide information for a planned pre-feasibility study (PFS).