PolarX Ltd (ASX:PXX) (OTCMKTS:PXXXF) (FRA:PX0) has mobilised its field team to the Humboldt Range Gold-Silver Project in Nevada with fieldwork, including extensive geological mapping and rock-chip sampling, expected to begin this week aimed at establishing drilling targets. Humboldt Range Project is between two large-scale active mines – Florida Canyon gold mine and the Rochester silver-gold mine – and contains geology consistent with bonanza-style epithermal gold-silver mineralisation and bulk mineable epithermal gold-silver mineralisation, both of which are well known in Nevada. The claims have been owned by the same family since the 1950s and very limited exploration has been reported. Establishing drilling targets Earlier sampling, validated by PolarX, revealed extremely high grades of gold and silver from the dumps of old mine workings in both groups of claims. This returned peak values up to 3,384 g/t gold, 2,837 g/t silver, 22.9% lead and 3.1% zinc. The company plans to evaluate the length and continuity of the vein sets and determine whether the altered rock between the veins contains economically viable grades of gold and silver amenable to bulk mining. This will include geological mapping, rock chip and channel sampling, soil sampling and may also include ground or airborne geophysics. Black Canyon and Fourth of July Claim Blocks, and proximal large-scale gold-silver mining operations. Fieldwork planned Fieldwork will start in the southern claim block, Fourth of July, and will initially focus on known high-grade outcropping quartz veins where the strike extent will be mapped and sampled. This will be followed by systematic soil sampling and geological mapping over the entire claim block. A similar program of vein mapping and sampling, soil sampling and geological mapping will then follow in the Black Canyon claims further to the north. Drones will then be used to collect ultra-high-resolution orthophotography and digital terrain mapping.