The East Keno area is represented by 15 multi-kilometer scale soil and geophysical anomalies which indicate additional potential for broad-scale mineralization in the least explored part of the Keno Hill silver district. Five of these anomalies have been drilled with initial positive results and an additional five other targets are drill ready. The Fox target, now with 2,748 meters drilled in 18 holes over three years, will be the focus of continued expansion and resource definition drilling in future programs.
Exploration of the East Keno area by Metallic Minerals began in 2018 with soil geochemical sampling and progressed to initial reverse circulation drilling in 2020 which returned several significant high-grade Ag-Pb-Zn sulfide vein intervals (KE20-01 0.77m @ 1,397 g/t Ag Eq) and numerous broad bulk-tonnage scale intervals (KE20-01, 28.2 @ 64 g/t Ag Eq and KE20-02, 22.1 m @ 48 g/t Ag Eq). The 2021 field program in East Keno combined additional reverse circulation drilling and initial diamond core drilling in warranting additional confidence in the target areas.
Drilling combined with extensive mapping and other geologic data has demonstrated a transition at East Keno from north to south from typical Keno style Ag-Pb-Zn mesothermal mineralization at Fox to mixed mesothermal and epithermal styles of mineralization at Zone 2 and UKHM. Epithermal mineralization is often associated with higher silver grades as demonstrated on the west side of the district at Silver King and Husky SW. The broad zones of mineralization at Fox, are now recognized as shallow dipping high-grade sheeted mesothermal Ag-Pb-Zn veins that appear to be associated with a regional scale thrust fault structures. This is a target concept that is broadly repeated across the district, and more specifically at multiple untested targets in the East Keno area.
Mineralized widths from the 2022 drilling on the Fox target returned the widest zones of continuous mineralization ever reported in the Keno Hill silver district and on a grade thickness basis are comparable in contained metal with some of the richest zones from the western part of district (see detailed 2022 results in Table 1 below). The Fox deposit sits within a multi-kilometer scale silver-in-soil anomaly leaving significant room to grow the footprint of mineralization for the Fox target both laterally and down dip. The westernmost drilling in the Fox target area, FOX22-05 and FOX22-06, demonstrates increasing widths of mineralization that will be tested in future programs along with untested areas of very high-level silver in soil values.
Drilling at the earlier stage Zone 2 and the UKHM targets have returned significant silver values including broad envelopes of mineralization similar to the Fox zone along with narrower high-grade silver intervals typical of the district. All drilling on these early-stage targets has been at shallow depths and these targets remain open for expansion with further drilling.
Notes to reported values:
1. Ag equivalent is presented for comparative purposes using conservative long-term metal prices (all USD): $20.0/oz silver (Ag), $1.00/lb lead (Pb), $1.40/lb zinc (Zn).
2. Recovered Silver Equivalent in Table 1 is determined as follows: Ag Eq g/t = [Ag g/t x recovery] + [Au g/t x recovery x Au price/ Ag price] + [Pb % x 10,000 x recovery x Pb price / Ag price] + [Zn% x 10,000 x recovery x Zn price / Ag price].
3. In the above calculations: 1% = 10,000 ppm = 10,000 g/t.
4. The following recoveries have been assumed for purposes of the above equivalent calculations: 95% for precious metals (Ag/Au) and 90% for all other listed metals, based on recoveries at similar nearby operations.
5. Intervals are reported as measured drill intersect length.