お知らせ • Oct 11
Dundas Minerals Limited Explores for Nickel, Copper, Cobalt and Gold in the Prospective Albany-Fraser Orogen, Western Australia
Dundas Minerals Limited is actively exploring for nickel, copper, cobalt and gold in the prospective Albany-Fraser Orogen, Western Australia. Diamond drill hole one (22CEDD001, or Hole 1) was completed to a depth of 423.4m on Thursday 6 October 2022. Hole 1 has intersected a large mafic-ultramafic intrusive complex commencing at ~170m down hole. Intense potassic altered gabbro was intersected with sulphidic quartz veins and quartz stockworks (possible gold and silver mineralisation). The drill hole also intersected felsic porphyry intrusions from 154m. Extensive massive, semi-massive, highly disseminated and disseminated sulphides were intersected from 32m to 423.40m (downhole), and sulphidic quartz veins from 43.5m to 412.1m. A total of 358.37m of sulphides (visual estimation) was intercepted, inclusive of: 4.26m massive sulphide averaging 88% volume estimate (including: 1.44m from 209.68- 211.12m @90% estimated volume, and 1.29m from 253.41-254.70m @95% estimated volume); 4.96m semi massive sulphide averaging 55% volume estimate (including: 1.60m from 154.60- 156.20m @50% estimated volume, and 0.81m from 163.10-163.91m @55% estimated volume); 7.60m matrix/net, blebby & stringer sulphide averaging 40% volume estimate (including: 3.3m from 149.40-152.70m @40% estimated volume, and 2.2m from 194.30-196.50m @40% estimated volume); 136.16m highly disseminated sulphide averaging 17% volume estimate (including: 15.5m from 115.00-130.50m @15% estimated volume, and 12.65m from 350.25-362.90m @12% estimated volume); and 205.39m disseminated sulphide averaging 5% volume estimate (including: 16.31m from 302.48- 318.79 @3% estimated volume, and 11.75m from 260.92-272.67m @5% estimated volume). The geological setting at Central is complex. With only a single diamond drill hole the geology is notyet sufficiently understood, however this is a geological environment conducive to an intrusive Ni- Cu-Co type deposit, plus gold and silver. Assay results are required to confirm mineralisation and further drilling is required. Initially an additional 4 diamond drill holes for a total program of ~2,000mare planned, however given the results of Hole 1 this program is likely to be expanded. In terms of the type and extent of mineralisation in Hole 1, many pXRF readings in the first 25m of the hole were anomalous in silver (Ag) (which is considered promising for possible gold mineralisation). The highest pXRF reading for Ag in the first 25m of core was 56ppm (g/t). For the remainder of the hole there are many pXRF readings anomalous in cobalt (Co): highest reading 2,250ppm; copper (Cu): highest reading 9,402ppm; zinc (Zn): highest reading 1,912ppm; Molybdenum (Mo): highest reading 1,012ppm; and silver (Ag): highest reading 14ppm (g/t), along with gold pathfinder elements (selenium, tungsten, tin, mercury and arsenic). The highest pXRF reading for nickel (Ni) was 558ppm. Visual observation of Hole 1 drill core, and specifically the extent of alteration and the presence of sulphides within almost all of the core (disseminated, highly disseminated, semi-massive and massive), the prolific quartz veins, plus the pXRF results, has determined that sampling and assay of the entire 423m of core for mineralisation will take place. Assay results may take between 6 and 8 weeks as the core needs to be transported from site, cut, sampled and prepared for assay. As the pXRF does not analyse for gold, any information on gold anomalism will only be available once laboratory assay results are returned. The intercept of massive, semi-massive, highly disseminated and disseminated sulphides in Hole 1 follows the Company's 26 September 2022, announcement of massive sulphide and anomalous pXRF readings for Co, Cu, Ni and Ag in shallow RAB holes 22CEWB001 and 22CEWB003 (each to 37m). Hole 22CEWB003 is located 230m northeast of Hole 1 and 22CEWB001 is approximately 1400m northeast of Hole 1 (Figure 6). Both holes 22CEWB001 and 22CEWB003 finished in massive sulphide, and are therefore open at depth and in all directions. Samples from these holes have been submitted for assay and results are expected within the next two weeks.