공시 • Apr 08
Hannan Metals Ltd. Extends High-Grade Gold Mineralization At Previsto in Peru
Hannan Metals Ltd. reported expanded high-grade gold mineralization at its 100%-owned Previsto alkaline gold project in Peru . Recent channel sampling has extended the known alkalic-type epithermal gold mineralization with multiple new high-grade results. The results, which remain open in all directions, are located at the northern margin of a 4 km by 4 km soil gold anomaly, further indicating the potential for a major new mineral district . Further gold mineralization has been identified during follow-up of high-grade channel samples samples located at the northern margin of a 4 km by 4 km soil gold anomaly >0.1 g/t Au, with most of the anomalous zone remaining untested . The gold mineralization was discovered during follow-up of anomalous reconnaissance high-grade rock samples. The channels are located at the northern margin of a 4 km by 4 km soil gold anomaly >0.1 g/t Au, with the majority of the anomalous zone remaining untested. The gold mineralization was trenched along a small drainage while the soil samples were collected along ridge lines. High-Grade Gold Mineralization Extended at Previsto now covers an area of 200 m × 130 m: o New results include extension of gold mineralisation by 66.1 m 0.2 g/t Au, 5 g/t Ag and 4 g/t Te south from original channel sampling: Entire channel now assays 135.2 m @ 1.3 g/t Au, 9 g/t Ag, 7 g/t Te (uncut) · Encompasses previously reported 69.1 m @ 2.4 g/t Au and 13 g/t Ag (CH15486 previously reported and uncut) and extensions of 66.1 m @ 0.2 g/t Au, 5 g/t Ag and 4 g/t Te (CH 15844 uncut) and includes and high-grade mineralization (previously reported) demonstrated by: o 3.0 m @ 12.7 g/t Au, 49 g/t Ag, 43 g/t Te. o 3.0 m @ 11.2 g/t Au, 53 g/t Ag, 36 g/t Te. o 0.7 m @ 16.1 g/t Au, 60 g/t Ag, 48 g/t Te. o New high-grade mineralization hosted by pervasive roscoelite alteration has been extended in two separate channels located 20 m north of channels above (0.5 g/t Au cut lower): 11.3 m @ 3.7 g/t Au,18 g/t Ag and 16 g/t Te including 1.7 m @ 23.4 g/t Au (channel 16436): 2.3 m @ 18.8 g/t Au and 66 g/t Ag (channel 16441). New Outcropping Copper mineralization has been identified located 20 m from the gold mineralized channels. The spatial distribution of gold and copper mineralization at Previsto based on channel sampling results suggests a vertical zonation pattern . Gold-silver-tellurium mineralization predominantly occurs in the upper elevation zones, while copper mineralization and associated anomalies are concentrated at lower elevations. Better leached results in the copper zone include: 21 m @ 0.15% Cu, 1 g/t Ag, and 9 ppm Mo, (channel CH15830) A Previsto, the host rock comprises a locally brecciated, calcareous K-feldspar porphyry of foid syenitic composition, locally containing large xenoliths of sedimentary rocks. Higher grade gold mineralization is related to pervasive fine roscoelite (vanadium-rich potassic mica) and fine grey quartz veining with pyrite, both as veinlets and stock work. Manganese oxides are commonly replacing vein and breccia filling suggesting that the unweathered mineralization was associated with rhodochrosite, a manganese carbonate mineral commonly associated with low sulfidation epithermal deposits. Mineralization consists of 1% disseminated pyrite with trace chalcopyrite, pyrite veinlets, and roscoelite veinlets, as well as fine jarosite veinlets likely after pyrite. The identification of a 1.3-metre-wide zone containing crystal-lined irregular cavities indicates that the intrusive body may be minimally eroded. The outcropping mineralization is weathered, which complicates field observations, and results from detailed petrographic and spectral studies are pending. Locally, a roscoelite-dominated foliated zone hosts the highest grades. Fine free gold can be observed in some hand sample with a hand lens or microscope. The current interpretation suggests the gold mineralization may be controlled by late strike-slip faults with horizontal movement creating extensional structures within a compressional regime, focusing gold mineralization. Previsto is both an extremely large scale emerging alkalic-type epithermal gold and copper-gold porphyry system. Along with the gold channels reported here, Hannan has also identified a 4 km x 4 km gold in soil anomaly that also is associated with both: Porphyry copper mineralization located 1.3 km northwest from the gold mineralization where channel sample results (previously reported) indicates consistent copper mineralization despite extensive leaching, suggesting potential for higher grades in unweathered (hypogene) zones. Results from 768.7 m of channel sampling include: o CH15447: 48.0 m @ 0.12% Cu. o CH15430: 107.0 m @ 0.09% Cu. o CH14555: 126.0 m @ 0.22% Cu. o CH15391: 192.0 m @ 0.17% Cu. At Previsto East, located 2.6 km east of the sampled gold mineralization reported here, a 1,800 m by 400 m gold-copper porphyry-epithermal target has been identified. The zone is characterized by strongly anomalous gold in soils (up to 0.6 g/t Au) and mineralized boulders (up to 1.9 g/t Au). Next Steps at Previsto. The Company is advancing multiple work programs to develop the Previsto gold-copper prospect: Expanded soil sampling and channel sampling programs to define the full extent of mineralization. Detailed prospecting, geological mapping and structural analysis to better understand mineralization controls. Implementation of further induced polarisation geophysical surveys over the project area . Advancement of drill permitting with collection of environmental and social data to support the application of a DIA permit by Third Quarter 2025. Global Alkaline-Type Epithermal Gold Deposit Analogues. The gold mineralization at Previsto displays characteristics typical of alkalic-type epithermal gold systems, which are known to form significant high-grade deposits globally. Notable examples include: Porgera (Papua New Guinea): Regarded as one of the world's top ten producing gold mines with historic production of 16 million ounces of gold and almost 3 million ounces of silver. Cripple Creek (Colorado): The richest gold mine in Colorado with historic production >23 Moz Au. Alkaline gold deposits are found in diverse geological settings, though they are typically linked to localized extensional regimes associated with alkaline rocks. These extensional structures facilitate the interaction between meteoric waters and deeper magmatic-hydrothermal fluids, leading to gold precipitation through fluid mixing. Their key characteristics include: High-K calc-alkaline to alkaline igneous rocks, often as diatremes or intrusive complexes. Enrichment in elements like Ag, V, Te, Fe, F, K, Ba and Mo as well as high Au:Ag ratios.