GOLDEN DEEPS LIMITED Golden Deeps Limited has commenced a 7 to 9 hole, >2,000m diamond drilling program at the Khusib Springs very high-grade copper-silver deposit (past production 300,000t at 10% Cu and 584 g/t Ag1), in the Otavi Mountain Land Copper District of Namibia. Four shallow diamond drillholes to test shallow targets below surface copper mineralisation above the mined area of the deposit and to test a key target for a repeat of the high-grade copper-silver massive sulphide deposit along strike to the northeast. Three to five deeper diamond drillholes to test for the extension of the very-high grade Khusib Springs copper-silver orebody at depth to the south of a normal/wrench fault that is interpreted to have offset the mineralised zone.
The deeper drillholes will test near previous intersections1 of high-grade copper-silver mineralisation to the south of the wrench fault at around 400m below surface. Downhole electromagnetics (DHEM) is planned to determine the extent of in-hole and/or off hole conductors in the vicinity of these holes. Follow up drilling will then test the conductors /projections of the mineralised zone currently interpreted to continue to the southwest.
Also, a large moving loop electromagnetics (MLEM) program will be carried out along strike from the existing deposit, targeting repeats of the massive sulphide copper-silver deposit for immediate drill testing. Golden Deeps Limited ("Golden Deeps" or "the Company") is very pleased to announce that it has commenced a 7 to 9 hole, >2,000m diamond drilling program targeting extensions and/or repeats of its very high-grade Khusib Springs copper-silver deposit The Khusib Springs deposit was a "blind" discovery, in the early 1990s by Goldfields Ltd1. Drilling in the upper part of the now mined deposit included spectacular intersections such as: KH006: 4.5m at 35.19% Cu, 3.67% Pb, 2.23% Zn, 2091 g/t Ag from 30m, KH008: 14.0m at 8.12% Cu, 0.75% Pb, 0.52% Zn, 385 g/t Ag from 37m.
The initial discovery went into production from 1995, closing in the early 2000s having produced 300,000t of ore at a very high grade of 10% copper (Cu) and 584g/t silver (Ag). The mined deposit terminated against a steeply dipping wrench-fault at around 300m depth. Further drilling was carried out to south of the fault and at depth, intersecting copper-silver mineralisation from around 400m depth and producing drilling intersections that included: KH66: 2.5m @ 2.13% Cu, 468 g/t Ag from 375m incl.
0.2m @ 12.1% Cu, 2,796 g/t Ag. However, due to the low prevailing copper price at the time the deeper mineralisation was not followed up and the decline based mine remained closed. A study in 2020 by South Africa based geological consultancy Shango Solutions3, on behalf of Golden Deeps, highlighted potential for remnant, open-pitable mineralisation above the mined Khusib Springs deposit.
Copper mineralisation is evident at surface within this zone. Shango also identified potential for the offset extensions of the Khusib Springs deposit to be located to the south and at depth across the offsetting wrench fault. Further interpretation and modelling of the Khusib Springs deposit indicates that this very high-grade copper-silver sulphide orebody is associated with a flexure in the dolomite /host platy limestone contact, that is offset by the wrench fault that is interpreted to have displaced the deposit in a right lateral/normal sense.
The previous drilling intersections south of the fault may represent the top of the offset deposit that remains open to the southwest and at depth.
