The zone remains open to depth and along trend for further exploration. Known mineralization is spread over an area two kilometres long and 200 to 800 metres wide with drilled mineralization in a central area 300 metres long and a true thickness of up to 285 metres of over 2% Zinc.
The most significant mineralization found to date on the property is the Boundary Zone where 24 historic core holes were drilled. This fertile corridor traces critical stratigraphic rock units, structural features and exploration targets from east of the Tom Deposit to west of the Boundary Zone over a length of at least 25 kilometres. The Nidd property covers the western extension of the mineralized “fertile corridor” that is host to all four of the known large zinc mineralized systems in the Macmillan Pass Zinc District – Tom, Jason, End Zone and Boundary Zone (see attached map). The Tom North Zone provides the potential for an open-pit mine life. In 2019, Fireweed successfully hit on 7 holes with intersections of up to 22.5 m at 6.1% Zn, 1.0% Pb in short holes. Prior to 2019, the last drilling completed at Tom North was in 1978 with the majority of drilling completed in 1951 & 1952. Tom North was not included on the 2018 resource estimate. Mineralization consists of finely laminated sphalerite, galena, pyrite and black cherty mudstone. It is located near the nose of the southeast plunging Tom anticline on its eastern limb. The Tom Southeast Zone is not exposed at surface, and consists of a tabular, stratiform body 0.5m to 6m thick with a strike length of approximately 400 m and a down dip extension of at least 350 m dipping 60-70º to the east.
#Pass vs macpass series
It consists of a series of fault bounded pods of interbedded sphalerite, galena, barite and chert. The Tom East Zone occurs near the hinge of the anticline that has folded the originally planar deposit, and which plunges northward in this area. The Tom West Zone hosts the bulk of the historical resource at the Tom deposit. The highest grade portion of the Tom West Zone occurs along the southern portion of the zone where Zinc+Lead+Silver grades exceed 10%. It is about 40 m thick at its widest and breaks into two discrete layers in the centre. The Tom West Zone dips 60 degrees to the southwest, has a strike extent of approximately one kilometer and extends up to 400 m down dip. All three zones have been affected by folding. The Southeast Zone is interpreted to have formed in a separate sub-basin to the main structure hosting the Tom West and Tom East Zones. The Tom West and Tom East Zones, both of which are exposed at surface, are interpreted to have formed one continuous lens prior to folding of the Tom Sequence. Zinc- lead- silver- barite mineralization at the Tom deposit varies from well layered to a brecciated stockwork zone adjacent to the Tom fault. Previous work by Teck on the Nidd claims included 35 drill holes (many with significant zinc mineralization) as well as extensive geochemical and geophysical surveys that outlined additional exploration targets.The large Nidd property covers 7,393 hectares in 372 mineral claims which expands Fireweed’s claim holdings in the district to 544 square kilometers.With the acquisition of the Nidd claims, Fireweed owns all four known large zinc mineralized systems in the region – Tom, Jason, Boundary Zone and End Zone – as well as many other zinc exploration targets including the entire highly prospective “fertile corridor” of exploration targets extending from Tom to Boundary Zone and beyond.
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