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White Rock quick to identify drill target at Arete
2 minute read
Diversified explorer and emerging producer, White Rock Minerals Ltd (ASX:WRM) in conjunction with its joint venture partner Sandfire Resources NL (ASX:SFR) has updated the market on the 2019 exploration program underway at the globally significant Red Mountain high-grade zinc and precious metals VMS project in central Alaska.
Importantly, White Rock is still building on what can be considered a substantial resource.
There are already two high grade deposits at the Red Mountain Project, with an Inferred Mineral Resource of 9.1 million tonnes @ 12.9% ZnEq for 1.1 million tonnes of contained zinc equivalent.
Summer field exploration activities commenced in late May with a mix of mapping, sampling, surface electrical geophysics, downhill electromagnetic survey and diamond drilling being conducted.
With regards to surface geological reconnaissance and geochemical sampling, this has progressed rapidly with more than 2000 soil samples and 260 rock chip samples collected.
Importantly, White Rock has a portable XRF device to provide rapid geochemical results, indicating that significant news flow could emerge in the short term.
Definition of drill targets
Prospecting of the Glacier Trend, a spatially extensive alteration zone with 10 kilometres of strike, has identified sulphide accumulations, chert and iron formations, all believed to be proximal to horizons prospective for base metal rich massive sulphides along strike and down dip.
Work is now proceeding to identify drill targets with initial ground electrical geophysics (CSAMT) to define conductivity features having commenced with three lines completed at the Arete prospect as indicated below.
This prospect was successfully identified from reconnaissance work in just the last few weeks.
Drilling of the Arete and other targets along the Glacier Trend is scheduled to commence in late June.
Ground electrical geophysics has also included a line of magnetotellurics (MT) undertaken to define the depth of the target horizon across the syncline between the high-grade West Tundra Flats and Dry Creek deposits as indicated on the above map.
This technique is effectively mapping the depth of the prospective horizons across the syncline, with the depth of the hinge zone much shallower than first interpreted.
The MT line also contains a strong conductor along strike from the West Tundra Flats deposit for further follow-up field reconnaissance, sampling, additional electrical geophysics and modelling, prior to finalising a drill target.
Highlighting the group’s exploration strategy, White Rock’s managing director, Matthew Gill said, “The agreed exploration strategy with our JV partner Sandfire is to test away from the known high-grade deposits in pursuit of the next big deposit.
This sees our activities testing many of the more regional targets identified from our work last year, and our current activities.
We have already identified a drill target at the Arete prospect in just the first few weeks of our current activities, a great credit to our team on the ground.”