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i-80 Gold Announces High-Grade Results from Drilling at Ruby Hill

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i-80 Gold Announces High-Grade Results from Drilling at Ruby Hill






Blackjack Zone – 15.6 % Zn, 8.7 % Pb, 420.4 g/t Ag & 0.6 g/t Au over 40.4 m
and 10.7 % Zn & 37.0 g/t Ag over 47.9 m

East Hilltop –15.9 % Zn, 4.3 g/t Au & 284.4 g/t Ag over 7.2 m

Ruby Deeps – 6.9 g/t Au over 50.7 m


i-80 GOLD CORP. (TSX: IAU) (NYSE: IAUX) is pleased to report additional positive results from exploration drilling at the Company’s 100%-owned Ruby Hill Property located in Eureka County, Nevada. The 2023 program continues to expand high-grade gold and polymetallic mineralization in multiple zones and has identified Carbonate Replacement Deposit (CRD) mineralization in the central portion of the Blackjack deposit – a complete summary of new results is provided in Table 1.


The current drill program at Ruby Hill is focused on defining and expanding high-grade mineralization in multiple target areas including Carlin-type gold, polymetallic CRD and zinc-skarn. All horizons remain open for expansion.  Recent highlight results from the most recent twelve drill holes include:

  • Blackjack CRD
    • 15.6 % Zn, 8.7 % Pb, 420.4 g/t Ag & 0.6 g/t Au over 40.4 m (iRH23-41)
      • Including 20.9 % Zn, 25.1 % Pb, 1.0 g/t Au & 1,221.1 g/t Ag over 11.8 m
  • Blackjack Skarn
    • 10.7 % Zn, 0.4 % Pb, 0.2 g/t Au & 37.0 g/t Ag over 47.9 m (iRH23-41)
  • East Hilltop
    • 15.9 % Zn, 4.3 g/t Au & 284.4 g/t Ag over 7.2 m (iRH23-39)
  • Gold Mineralized Zones 
    • 6.9 g/t Au over 50.7 m including 8.0 g/t Au over 24.9 m (iRH23-40) – Ruby Deeps
    • 9.1 g/t Au over 10.2 m (iRH23-41) – Lower Jack


“The Ruby Hill drill program continues to yield exceptional results in multiple target areas including the recent identification of high-grade polymetallic CRD mineralization in the Blackjack Zone.”, stated Tyler Hill, Chief Geologist of i-80. “Step-out drilling is expanding mineralization in several zones with all known horizons remaining open for expansion. We are also compiling the results of recently completed geophysical surveys that have identified multiple high-priority anomalies that will be tested in the future.”


Drilling continues to expand both polymetallic CRD and skarn mineralization in the Upper and East Hilltop Zones situated along the Hilltop fault structure where mineralization has now been defined over a strike length of approximately 750 metres including the Upper, Lower and East Hilltop Zones (see Figures 1 & 2).  The current drilling program is also focused on the Blackjack deposit, one of the primary polymetallic zones at Ruby Hill, where zones of gold mineralization are also being intersected. Step-out drilling is also demonstrating significant expansion potential in the Ruby Deeps gold deposit.


Blackjack Zone – The Blackjack deposit is located immediately under the Archimedes pit (see Figure 1) and is being tested utilizing directional core drilling. The 2023 program is demonstrating the potential to expand high-grade polymetallic mineralization through step-out drilling and is also defining CRD mineralization in the upper central portion of the deposit (see Image 1). Hole iRH23-41 intersected high–grade skarn, CRD and gold mineralization with highlight new results that include:

  • iRH23-41 (Skarn) – 10.7 % Zn, 37.0 g/t Ag and 0.2 g/t Au over 47.9 m
  • iRH23-41 (CRD) – 15.6 % Zn, 8.7 % Pb, 420.4 g/t Ag and 0.6 g/t Au over 40.4 m
  • iRH23-41 (Carlin-type gold) – 9.1 g/t Au over 10.2 m (Lower Jack)


East Hilltop – Both CRD and skarn mineralization are being delineated in the East Hilltop target area (Figure 1). The skarn zone is located along strike to the south of, and in a near-identical geological setting, as the Blackjack deposit. The CRD mineralization is located immediately to the east of the Upper Hilltop Zone along the Hilltop fault structure. New drilling at East Hilltop returned high-grade results including:

  • iRH23-39 (CRD) – 15.9 % Zn, 4.3 g/t Au & 284.4 g/t Ag over 7.2 m


Ruby Deeps – Ruby Deeps is the core Carlin-type gold deposit at Ruby Hill and is located beneath the western portion of the Archimedes pit with a strike length of over 800 metres (Figure 1). Hole iRH23-40 represents a 100 metre step-out north of hole IRH23-09 (7.3 g/t Au over 10.2m) and south of drilling completed in 2022. The Ruby Deeps remains open south of iRH23-09. Highlight new assays include:

  • iRH23-40 – 6.9 g/t Au over 50.7 m including 8.0 g/t Au over 24.9 m


Additional exploration targets are being drilled at Ruby Hill in 2023 including the TL and FAD Zones. Further targets delineated in the recently completed geophysical surveys will be tested later in the year. Multiple holes have targeted mineralization proximal to the historic TL Mine with mixed results and narrow zones of mineralization. Several holes have recently been completed (assays pending) at the FAD deposit located approximately two kilometres to the south of Ruby Hill where earlier drilling completed by Paycore returned intercepts of up to 8.0 g/t Au, 79.0 g/t Ag, 10.0 % Zn & 1.0 % Pb over 27.4 m in hole PC22-10, and 7.1 g/t Au, 376.0 g/t Ag, 6.3 % Zn & 10.3 % Pb over 14.8 m in hole PC22–08.


The Eureka (Ruby Hill) Mining District has a history of high-grade polymetallic CRD production that began in the 1860’s and spanned a period of more than one hundred years. Historic mined grades rank amongst the highest for any CRD district in the world. Since the 1960’s, the CRD potential of the Eureka District has been largely overlooked in favour of exploration for Carlin-type gold deposits and the Company considers the opportunity to be substantial. The Ruby Hill Property is one of the Company’s primary assets and is host to the core processing infrastructure within the Eureka District of the Battle Mountain-Eureka Trend including an idle leach plant, an active heap leach facility, and is host to multiple gold, gold-silver and polymetallic (base metal) deposits.


Table 1 – Highlight New Assay Results from Ruby Hill

Drillhole ID Zone Type From (m) To (m) Length (m) Au (g/t) Ag (g/t) Pb (%) Zn (%)
iRH23-18B Blackjack Core 616.0 619.7 3.8 0.4 14.7 0.1 7.9
iRH23-31 TL RC NSI
iRH23-32 TL RC NSI
iRH23-33 TL RC 494.1 495.6 1.5 4.5
iRH23-34 TL Core 424.6 439.8 15.2 3.3 6.2
iRH23-35 TL Core 432.8 434.3 1.5 2.0 10.9
and TL Core 465.1 466.6 1.5 4.0 8.9
and TL Core 492.9 494.0 1.1 0.5 57.0 2.4 8.0
iRH23-36 TL RC NSI
iRH23-37 TL RC NSI
iRH23-38 Blackjack RC Hole abandoned at 232 m
iRH23-39 East Hilltop Core 269.0 276.1 7.2 4.3 284.4 0.1 15.9
iRH23-40 Ruby Deeps Core 339.0 389.7 50.7 6.9 2.2
including Ruby Deeps Core 364.8 389.7 24.9 8.0 3.1
and Ruby Deeps Core 431.5 432.6 1.1 8.6 10.0
and Ruby Deeps Core 497.7 501.4 3.6 6.1 4.0
iRH23-41 Blackjack Core 508.7 556.6 47.9 0.2 37.0 0.4 10.7
and Blackjack Core 589.8 593.4 3.6 7.1 7.3
and Blackjack Core 627.2 667.5 40.4 0.6 420.4 8.7 15.6
including Blackjack Core 653.2 665.0 11.8 1.0 1221.1 25.8 20.9
and Lower Jack Core 677.0 687.1 10.1 9.1 6.6
* True widths estimated at 60-90%. Numbers may not add due to rounding.


UTM Drillhole ID East m North m Elevation m Azimuth Dip
NAD83 Zone 11 iRH23-18B 588233 4375586 1962 230 -48
iRH23-31 588233 4375586 2010 104 -64
iRH23-32 587604 4374950 1987 068 -74
iRH23-33 587244 4374596 2010 208 -64
iRH23-34 587074 4375228 1994 115 -52
iRH23-35 587238 4374595 1994 105 -50
iRH23-36 587606 4374954 2009 127 -65
iRH23-37 587606 4374955 2009 211 -45
iRH23-38 587106 4374379 1994 035 -48
iRH23-39 587105 4374378 1994 078 -75
iRH23-40 587360 4375384 1867 252 -69
iRH23-41 587424 4375128 1979 060 -51



The Company has submitted for approval its plan to develop an underground mine at Ruby Hill with mineralization accessed via a ramp from the Archimedes open pit. The target is to commence construction in 2024 to provide underground platforms for definition drilling and mining operations.


Please click here for further information on abbreviations and conversions referenced in this press release.


QAQC Procedures


All samples were submitted to American Assay Laboratories (AAL) of Sparks, NV, which is an ISO 9001 and 17025 certified and accredited laboratory, independent of the Company. Samples submitted through AAL and are run through standard prep methods and analyzed using FA-PB30-ICP (Au; 30g fire assay) and IO–4AB32 (35 element suite; 0.5g 4-acid ICP-OES+MS). Select high-grade gold samples were also completed with metallic screen fire assays using G-FASFAu11. AAL undertakes 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


Tyler Hill, CPG-12146, Chief Geologist at i-80 is the Qualified Person for the information contained in this press release and is a Qualified Person within the meaning of National Instrument 43-101.


About i-80 Gold Corp.


i-80 Gold Corp. is a 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 with processing at i-80’s centralized milling facilities. i-80 Gold’s common shares are listed on the TSX and the NYSE American.



Figure 1 – Hilltop and Blackjack Surface Plan (CNW Group/i-80 Gold Corp)




Figure 2 – Blackjack Surface Plan (CNW Group/i-80 Gold Corp)




Image 1 – iRH23-41 CRD mineralization drill core photograph (CNW Group/i-80 Gold Corp)


Posted September 13, 2023

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