White Rock Minerals Ltd (ASX:WRM) is busy completing late summer exploration at the Red Mountain high-grade zinc and precious metals volcanogenic massive sulphide (VMS) project in central Alaska, USA.
Late-season field activities at the project include diamond drilling and surface exploration to define targets for follow-up during 2020.
The drill rig has relocated to test 200 metres down dip of previous drilling at the high-grade Dry Creek deposit.
White Rock is also undertaking a ground EM survey at the Cirque prospect where massive sulphide mineralisation extends under glacial cover.
There are two high-grade deposits at Red Mountain with an inferred mineral resource of 9.1 million tonnes at 12.9% zinc equivalent for 1.1 million tonnes of contained zinc equivalent at Dry Creek and WTF.
Summer field exploration has focused on defining and drill testing new targets that have the potential to yield a substantial discovery to support a greenfield development scenario.
New target areas
During the latter half of the 2019 field season, drilling has focused on three new target areas along the Glacier Trend including Arete, Smog South and Sheep Rogers.
The Arete and Sheep-Rogers target areas are within an extensive alteration zone with 10 kilometres of strike where multiple prospective occurrences containing sulphide accumulations, chert and iron formations have been identified.
The Smog South prospect is a large isolated target area further east along Glacier Trend also with extensive alteration, anomalous geochemistry plus surface base metal mineralisation within a VMS horizon at the Smog prospect to the north.
Further target areas to be drilled include Artesia, Irish Knob, Black Top, Grizzly and Glacier Creek East.
Geochemical anomalies to be drill tested
All target areas, including those drilled recently with only one hole at each, contain numerous prospective horizons, geochemical anomalies and EM conductivity features to be drill tested.
Work during the latter half of the field season has also focused on acquiring new regional surface geochemistry across the expanded tenement package and the intervening prospective stratigraphic package to the south and west.
A new stream sampling survey has been completed with more than 1,000 samples collected over the 800 square kilometre area extending from Sheep Creek in the west through to Anderson Mountain in the south and West Fork to the east.
A total of 11 diamond drill-holes have been completed to date in the 2019 program with the drill rig having returned to Dry Creek to drill a second hole.