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Fireweed Zinc Provides Exploration Update on Macmillan Pass Zinc Project

Fireweed Zinc Ltd., a public mineral exploration company, has provided an update on its exploration program being conducted at the Macmillan Pass Zinc Project located in Yukon, Canada.

Macmillan Pass Mineralization and Targets (Image credit: Fireweed Zinc Ltd.)


  • Twelve core drill holes have been completed—one at Target R, one at the Tom East Zone, one at the Tom West Zone, two at the Jason North target, and seven at the Tom North target. Drilling has now been initiated at Target A.
  • Survey of about half of Fertile Corridor between Boundary Zone and End Zone has been completed by Gravity geophysics crews.
  • About 80% of airborne LiDAR topographic surveying has been completed
  • Geological prospecting, mapping, and sampling are ongoing


Drilling was initiated at the Tom North target to test a 600 m-long prospective north extension of the massive Tom West mineral resource. Initially, three holes were scheduled but following the expansion of the program, seven holes have been concluded.

At Tom North, positive drill results can potentially extend the life of the underground mine and open pit, and also enhance Tom economics elucidated in the present Preliminary Economic Assessment (PEA).

At Tom West, a step-out hole has been completed so as to expand the high-grade feeder mineralization to the south.

Similarly, at Tom West, a step-out hole was completed on the down-dip extension of an extremely high grade 2018 hole, which returned 243 g/t silver, 13.5% lead, and 21.1% zinc over 16.41 m.

Target R was tested by one hole where a soil anomaly and coincident gravity-magnetic highs were identified close to the camp access road north of the Tom deposits.

The Jason North target is situated immediately north of the large Jason Main Deposit. Two holes were completed on this target, which was defined via reinterpretation of historic data and is highlighted by geophysics and coincident soil anomalies. The Jason North target has never been drilled before, although it is closely located to Jason Main.

Currently, the drill has moved to test the massive coincident gravity-magnetic anomaly located at Target A following which it will test Target G.

Samples obtained from the first six core holes have been processed and delivered to the laboratory; further samples will be sent this week. As assays are received and interpreted, drill results will be published.

Field Exploration

A survey of around half of the Fertile Corridor between Boundary Zone and End Zone has been completed by Gravity geophysical crews. Based on budget and availability of the crew, further gravity surveying will be carried out this summer.

Geological fieldwork has been concentrating on optimizing more drill targets at Target G, David¸ and the Fertile Corridor.

New Community Liaison Office Opened in Ross River

Fireweed Zinc is happy to announce the opening of a new office and hiring of a Community Liaison Officer in the Kaska community of Ross River, within the historic territory of the Ross River Dena Council. Ross River happens to be the closest settlement to the Macmillan Pass project, situated approximately 200 km to the southwest.

Fireweed Zinc believes in the significance of engaging with First Nations and local communities toward fostering courteous relationships via dialogue and collaborative processes.

The new office will give Fireweed Zinc a full-time presence in the community, allowing it to further its relationships with and deal with any concerns of individual members and community officials of Ross River and also other nearby First Nations of Liard and Na-Cho Nyäk Dun.


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