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i-80 Gold Intersects High-Grade Gold in Underground Drilling at Granite Creek

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i-80 Gold Intersects High-Grade Gold in Underground Drilling at Granite Creek






Including 25.4 g/t Au over 3.9 m & 12.6 g/t Au over 3.0 m


i-80 GOLD CORP. (TSX:IAU) (OTCQX:IAUCF) is pleased to announce continued positive assay results from the ongoing underground drill program at the Company’s Granite Creek Property located in Humboldt County, Nevada.


New high-grade results are from drilling from the 4790 Level targeting mineralization in the Range Front, Adam Peak, and Otto fault horizons, the first area being targeted for mining and located proximal to and below existing mine workings (see Table 1). Multiple target areas are being drilled from underground including testing the down-dip potential of the Otto, Adam Peak and Ogee Zones. The deepest hole drilled to test the extension at depth of the main mine horizons in the ongoing program, iGS21-15, intersected high-grade gold mineralization in multiple horizons including 13.3 g/t Au over 13.1m & 20.3 g/t Au over 7.5m & 10.1 g/t over 17.5 m with true width being 33-55% of intercepts.



Highlight results from initial underground drilling from Level 4790 include:

  • 25.4 g/t (grams per tonne) Au (gold) over 3.9 m in hole iGU21-27
  • 12.6 g/t Au over 3.0 m in hole iGU21-28
  • 10.8 g/t Au over 1.2 m in hole iGU21-29
  • 13.4 g/t Au over 1.1 m in hole iGU21-30
  • 14.7 g/t Au over 1.5 m, 10.2 g/t Au over 3.5 m & 7.5 g/t Au over 6.1 m in hole iGU21-31
  • 19.3 g/t Au over 1.1 m, 8.0 g/t Au over 3.0 m & 9.4 g/t Au over 2.9 m in hole iGU21-32


The current program is expected to comprise more than 30,000 metres (m) from surface and underground with continued assay results to be provided as received. The primary goal of the 2022 drill program is to advance underground opportunities to production with refractory mineralization from the underground operation at Granite Creek initially trucked to Twin Creeks for processing, pursuant to the agreement recently entered into with Nevada Gold Mines, until such time that the Company’s Lone Tree facility is operational.


Tyler Hill, Senior Geologist of i-80, commented: “These results continue to delineate high-grade mineralization in multiple zones being defined in advance of mining at Granite Creek. We have added additional underground infrastructure in order to commence stepping out at depth where we continue to see high-grade intercepts including 7.4 g/t Au across 73.2 metres in iGS21-15 (see press release dated February 8, 2022). We also remain primarily focused on defining the new South Pacific Zone where we are seeing strong alteration and faulting in most holes drilled to-date.”


The Granite Creek Property is strategically located proximal to Nevada Gold Mines’ Turquoise Ridge and Twin Creeks mines at the north end of the Battle Mountain-Eureka Trend, at its intersection with the Getchell gold belt in Nevada. High-grade mineralization occurs in a near-identical geological setting as that at the multi-million ounce Turquoise Ridge Mine located immediately to the north; proximal to a major regional fault (the Getchell or Range Front fault) on the eastern edge of the large Osgood Mountains intrusive complex (see Figure 3). The Granite Creek deposit remains open at depth and along strike from the existing underground workings and step-out drilling aimed at expanding resources is currently underway.


Table 1 – Summary Assay Results from Level 4790 Drilling


Figure 1 – Cross Section View of Granite Creek Mine


Figure 2 – Oblique Plan View of Granite Creek Mine

Figure 3 – Property Location Map

Owing to the success of the ongoing drilling in expanding mineralization, the program has been increased to 30,000 metres in 2022. In addition to the underground program at Granite Creek, the Company continues to advance permitting for open pit mine on the Property including heap leach processing on-site.


QAQC Procedures


All samples were submitted to either ALS Minerals (ALS) or Paragon Geochemical Assay Laboratories (PAL) both of Sparks, NV, which are ISO 9001 and 17025 certified and accredited laboratories, independent of the Company. Samples submitted through PAL and ALS are run through standard prep methods and analysed using FA-Pb30-ICP (Au; 30g fire assay) and 48MA-MS (48 element Suite; 0.5g 4-acid digestion/ICP-MS) methods for PAL and Au-AA23 (Au; 30g fire assay) and ME-ICP41 (35 element suite; 0.5g Aqua Regia/ICP-AES) for ALS. ALS and PAL also undertake their own internal coarse and pulp duplicate analysis to ensure proper sample preparation and equipment calibration. i-80 Gold Corp’s QA/QC program includes regular insertion of CRM standards, duplicates, and blanks into the sample stream with a stringent review of all results.


Qualified Person


Tim George, PE, Mine Operations Manager, reviewed the technical and scientific information contained in this press release and is a Qualified Person within the meaning of NI 43-101.


About i-80 Gold Corp.


i-80 Gold Corp. is a well-financed, Nevada-focused, mining company with a goal of achieving mid-tier gold producer status through the development of multiple deposits within the Company’s advanced-stage property portfolio to complement existing gold production from the Ruby Hill open pit.

Posted April 7, 2022

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