PolarX (ASX: PXX) has confirmed that outstanding geophysics and surface sampling results highlight the potential for a major copper-gold system at its Alaska Range project.
New 3D magnetic inversion modelling has identified a large anomaly with a diameter of 3.5 kilometres extending north from the Zackly magnetite skarn deposit, beneath the Jupiter prospect and towards the Gemini target.
High-grade surface mineralisation directly overlies several magnetic apophyses interpreted to emanate from the deeper intrusive body, significantly enhancing the prospectivity of the system for large-scale intrusion-related copper-gold mineralisation.
PolarX believes “the combination of high-grade copper-gold surface mineralisation, extensive hydrothermal alteration, and large-scale geophysical anomalies highlights the emerging potential for a significant district-scale intrusion-related mineral system at Alaska Range”.
High-Grade Assays Collected
A total of 128 rock chips were collected and sampled, returning widespread high-grade copper and gold results at the Jupiter and Mars and surrounding prospects.
Best assays from Mars were 27.3% copper, 0.158 grams per tonne gold and 111 parts per million silver, 8.98% copper, 0.059g/t gold, and 51.2ppm silver, along with 5.4% copper, 0.156g/t gold and 53.4ppm silver.
Jupiter returns featured 7.78% copper, 1.201g/t gold, and 41.4ppm silver, as well as 7.39% copper, 18.883g/t gold, and 173ppm silver.
Highlights from the other prospects included 11.9% copper, 0.058g/t gold, and 29.3ppm silver from Phobos, 2.85% copper and 0.304g/t from Senator, 2.3% copper and 4.042g/t from Zackly, and 1.05% copper and 0.154g/t from Gemini.
Widespread Copper Structures
Historical assays and geochemical samples at Mars continue to demonstrate widespread high grades from vein structures as well as lower-grade disseminated copper mineralisation across the target area.
PolarX confirmed that one of the most recent samples returned 27.3% copper from oxidised chalcopyrite and bornite veins that crosscut the locally suppressed topography in an under-sampled part of the Mars prospect.
Newly identified mineralisation at Phobos combined with historical samples defined a 1km x 1km target comprising a coincident magnetic and geochemical high over the local area.
The company expects a planned mobile magnetotelluric survey and detailed mapping will significantly refine drill targeting ahead of future exploration programs.
