お知らせ • Jun 07
Eagle Mountain Mining Limited Provides an Update on Its 100% Owned Oracle Ridge Copper Mine Project (Oracle Ridge, or the Project) in Arizona, USA
Eagle Mountain Mining Limited provided an update on its 100% owned Oracle Ridge Copper Mine Project (Oracle Ridge, or the Project) in Arizona, USA. Results for 17 resource expansion holes have been received (Table 1, Attachment 1) which continue to support potential growth of the recently updated MRE at a 1% copper cut-off grade. Key observations from the new drill holes include: WT-22-99 was drilled in the Western Talon, between previously reported thick intersections in holes WT-21-56 (63.1m at 1.84% Cu, 15.68 g/t Ag and 0.30g/t Au) and WT-21-59 (38.1m at 1.97% Cu, 20.64g/t Ag and 0.51g/t Au). The drill hole reported several high-grade intercepts within a broader interval of 60.7m at 1.56% Cu, 14.15g/t Ag and 0.32g/t Au. High-grade intervals within this broader zone include 14.6m at 2.83% Cu, 27.54g/t Ag and 0.51g/t Au and 0.9m at 10.55% Cu, 91.1g/t Ag and 1.31g/t Au (Figure 2). Results from WT-22-99 are expected to improve the tonnage and grade of the mineral resource in this area; WT-22-106 was drilled in the Western Talon, approximately 50 metres southeast of WT-22-99. The drill hole intersected thick mineralisation of slightly lower grade than in WT-22-99, with best intervals of 10.8m at 1.67% Cu, 12.56g/t Ag and 0.72g/t Au in the upper part of the hole and 8m at 1.62% Cu, 16.45g/t Au and 0.40g/t Au in the lower part of the hole. The upper intersection was contained within a broader zone returning 44.2m at 0.96% Cu, 7.77g/t Ag and 0.34g/t Au, just below the reportable cut- off of 1% Cu (Figure 2); WT-22-112 was drilled in the Western Talon, at the southern end of the drilling in that area. Strong, discontinuous mineralisation was intersected across two zones: the upper zone returning a best intercept of 8.9m at 1.53% Cu, 14.11g/t Ag and 0.34g/t Au within 42.7m at 0.81% Cu, 5.62g/t Ag and 0.13g/t Au (using a 0.6% Cu cut-off grade); the lower zone returning a best interval of 9.4m at 1.35% Cu, 14.88g/t Ag and 0.23g/t Au within 41.9m at 0.69% Cu, 8.29g/t Ag and 0.12g/t Au (using a 0.6% Cu cut-off grade);WT-21-69, drilled in the Southern Talon, intersected moderately mineralized zones in a scarcely drilled area. Best results include 4.3m at 2.27% Cu, 31.42g/t Ag and 1.48g/t Au; WT-22-83, WT-22-96, WT-22-100 and WT-22-103 were completed in the south-western Talon region to verify the extent of prospective stratigraphy in the area. These drill holes encountered Leatherwood intrusive at shallower depth than anticipated with only minor mineralised intersections in the sediments. Best results include 4.5m at 1.61% Cu, 13.04g/t Ag and 0.24g/t Au in drill hole WT-22-83; andWT-22-89 was drilled in the Central Talon area and did not return significant intercepts. The hole encountered an unusually thick quartzite, a rock type not conducive to skarn mineralisation. Results from six holes completed in this area have been received: WT-21-73, WT-21-81, WT-22-82, WT-22-92, WT-22-97 and WT-22-98. Localised mineralisation and alteration were encountered in every hole with results up to 3.7m at 2.32% Cu, 18.39g/t Ag and 0.21g/t Au in WT-21-73 and 6.4m at 1.62% Cu, 21.01g/t Ag and 0.39g/t Au in WT-22-82. The results for five resource infill holes have been received (Table 2, Attachment 1). These holes were drilled at a nominal Inferred spacing of 50 metres within the footprint of the recently updated MRE at a 1% copper cut-off grade. These holes are designed to improve resource confidence as part of a program to upgrade resource categories. Key observations from the results of resource infill holes include: WT-22-90 was drilled in the Southern Talon and intersected multiple mineralised zones across a downhole length of 130 metres. Best results include 10.6m at 2.63% Cu, 17.97g/t Ag and 0.39g/t Au including 0.8m at 7.88% Cu, 51.10g/t Ag and 1.08g/t Au; WT-21-76 was drilled between the area linking the Southern and Western Talon. Surprisingly, a sample within the Leatherwood sill returned a gold grade of 40.30g/t over one metre. This is the gold assay ever recorded at Oracle Ridge. The sample was collected near a structure characterised by some veining and oxidation. While the intercept is structurally controlled along a vein, such high-grade zones, while likely to be limited in size, could provide incremental value for future mining operations; WT-22-101 and WT-22-102 were drilled in the northern part of Project, testing the north-western mineralisation in the main mine area. Both holes intersected only limited alteration and mineralisation; and WT-22-108 was drilled in the Southern Talon and intersected multiple thin mineralised zones in the lower part of the hole, with best results of 3.5m at 2.04% Cu, 5.11g/t Ag and 0.07g/t Au. The Company is planning the refurbishment of the existing underground mine. This will enable drilling from underground along with access to obtain samples for metallurgical test work. Various contractors and consultants have undertaken site visits and a contract is expected to be awarded in the coming weeks with underground operations to commence shortly thereafter. Drilling from underground is scheduled to commence in the September quarter of 2022. The average hole length of the underground holes is expected to be approximately half that from surface, which provides significant improvements in drilling efficiency.