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Integra Intersects Record Silver Grade at DeLamar: 9.85 g/t AuEq Over 26.97 m, Including 80.40 g/t Au and 14,054 g/t Ag (261.28 g/t AuEq) Over 0.40 m in Potential New, High-Grade Structural Zone at Sullivan Gulch

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Integra Intersects Record Silver Grade at DeLamar: 9.85 g/t AuEq Over 26.97 m, Including 80.40 g/t Au and 14,054 g/t Ag (261.28 g/t AuEq) Over 0.40 m in Potential New, High-Grade Structural Zone at Sullivan Gulch






  • Drill results from Sullivan Gulch (located on the eastern portion of the DeLamar Deposit) include:
    • IDE-22-228
      • 4.10 grams per tonne gold and 446.92 g/t silver (9.85 g/t gold equivalent) over 26.97 meters
        • Including 13.47 g/t Au and 1,909.45 g/t Ag (38.05 g/t AuEq) over 5.63 m
        • Including 80.40 g/t Au and 14,054.00 g/t Ag (261.28 g/t AuEq) over 0.40 m
        • Including 40.74 g/t Au and 2,839.00 g/t Ag (77.28 g/t AuEq) over 0.76 m
    • IDE-22-226
      • 1.09 g/t Au and 70.17 g/t Ag (2.00 g/t AuEq) over 97.54 m
        • Including 6.57 g/t Au and 1,406.00 g/t Ag (24.67 g/t AuEq) over 1.52 m
        • Including 7.62 g/t Au and 263.00 g/t Ag (11.00 g/t AuEq) over 1.52 m
        • Including 7.32 g/t Au and 368.00 g/t Ag (12.06 g/t AuEq) over 1.52 m
    • IDE-22-226
      • 0.57 g/t Au and 47.79 g/t Ag (1.18 g/t AuEq) over 50.60 m
  • Including 1.02 g/t Au and 234.00 g/t Ag (4.03 g/t AuEq) over 1.52 m
  • Including 0.99 g/t Au and 293.00 g/t Ag (4.76 g/t AuEq) over 2.02 m
  • The results from drill hole IDE-22-228 confirm for the first time the presence of a new, Northwest trending structural zone hosting high-grade gold-silver dipping to the Northeast. All previous drilling at Sullivan Gulch targeted a North-northwest structure dipping to the Southwest, suggesting these new intercepts may represent a new, high-grade feeder system that has not been previously encountered.
  • This discovery demonstrates the future resource upside potential at the Project, including the highest-grade silver intersect to date in drill hole IDM-22-228.
  • The drill results reported today further validate the geological interpretation that a high-grade feeder vein system exists in conjunction with and amongst the low-grade, disseminated, bulk-tonnage resource at Sullivan Gulch.


Integra Resources Corp. (TSX-V: ITR) (NYSE American: ITRG) is pleased to announce drill results from the DeLamar Project located in southwestern Idaho. The results announced today are from the Sullivan Gulch exploration program that was intended to further define a high-grade gold-silver feeder system in conjunction with the Sullivan Gulch bulk tonnage resource. Sullivan Gulch, in addition to targets at DeLamar such as War Eagle, Florida Mountain and BlackSheep, show the future potential at DeLamar for both resource expansion and mining scenarios.


President and CEO, George Salamis, notes: “The grades announced today are clearly spectacular and represent some of the highest-grade gold and silver intercepts ever encountered on the project. The immense value of the DeLamar project was recently highlighted in the February 2022 PFS Resource Estimate which included a large gold and silver resource. This resource base tied into a robust mine plan that demonstrated low-cost gold-silver production and a mining scenario that we believe can be permitted in a simple and straight-forward manner. As a potential new high-grade discovery, these results announced today further underscore that resource upside is not at all capped, but in fact further enhanced by results such as these shown today, as a large measure of today’s intercepts reside outside of current resource limits and mine plans. The growth opportunities and project optionality remain omnipresent at DeLamar. This has always been a key hallmark of the project and Integra has been adding ounces to DeLamar at a discovery cost of approximately $10/oz AuEq. Furthermore, the Company has increased the total resource on the project by approximately 76%, from no declared resources in 2017 to those presented in the February 2022 PFS.” Mr. Salamis further adds, “Drilling to date at Sullivan Gulch has delineated a mineralized zone over a strike length of 1,000 m with a width of 200 m and a depth extent of up to 350 m. The mineralized area at Sullivan Gulch correlates with a strong Induced Polarization chargeability footprint. This IP chargeability extends 900 m to the south beyond any existing drilling completed by the Company, suggesting the mineralization at Sullivan Gulch continues on strike.”


The following table highlights selected intercepts from the Sullivan Gulch drill results announced today:


Drill Hole From (m) To (m) Interval
g/t Au g/t Ag g/t AuEq
IDE-22-226 192.63 243.23 50.60 0.57 47.79 1.18
including 203.61 205.13 1.52 1.02 234.00 4.03
including 223.11 225.13 2.02 0.99 293.00 4.76
IDE-22-226 253.90 282.85 28.95 0.73 5.47 0.80
including 258.47 261.52 3.05 2.88 7.47 2.98
IDE-22-226 308.76 406.30 97.54 1.09 70.17 2.00
including 310.29 311.81 1.52 6.57 1,406.00 24.67
including 331.62 333.15 1.53 5.53 96.92 6.77
including 337.72 340.77 3.05 1.85 266.50 5.28
including 349.91 351.43 1.52 7.62 263.00 11.00
including 354.48 357.53 3.05 4.40 192.00 6.87
including 372.77 374.29 1.52 7.32 368.00 12.06
IDE-22-228 27.13 120.40 93.27 0.27 30.61 0.66
including 34.44 35.97 1.53 0.49 260.00 3.84
including 40.54 42.06 1.52 0.19 378.00 5.05
including 81.69 81.99 0.30 0.47 834.00 11.21
IDE-22-228 173.13 185.17 12.04 0.91 53.98 1.60
including 176.17 177.24 1.07 2.87 74.17 3.83
IDE-22-228 206.65 243.23 36.58 0.99 36.84 1.46
including 211.23 214.27 3.04 3.74 201.90 6.34
including 222.35 223.57 1.22 2.16 82.90 3.23
including 241.10 242.32 1.22 4.29 22.08 4.57
IDE-22-228 287.43 314.40 26.97 4.10 446.92 9.85
including 290.78 293.68 2.90 3.59 121.81 5.16
including 299.22 299.92 0.70 1.79 218.00 4.60
including 303.89 304.56 0.67 9.04 9.17 9.16
including 307.70 313.33 5.63 13.47 1,909.45 38.05
including 308.70 309.10 0.40 80.40 14,054.00 261.28
including 309.98 310.74 0.76 40.74 2,839.00 77.28
(1) Downhole thickness: true width varies depending on drill hole dip; most drill holes are aimed at intersecting the vein structures close to perpendicular therefore true widths are close to downhole widths (approximately 70% conversion ratio)
(2) Gold equivalent = g Au/t + (g Ag/t ÷ 77.70)
(3) Intervals reported are uncapped

Sullivan Gulch:


The high-grade results announced today build on the previous news releases from 2022 and are particularly exciting due to the presence of an emerging high-grade vein system at Sullivan Gulch below the existing low-grade, bulk tonnage resource. To date, drilling by the Company has focused on a North-northwest trending vein system that dipped to the Southwest. Through geological modeling and interpretation, the Company noted the possible presence of a Northwest trending vein system dipping to the Northeast. In drill hole IDE-22-228, the Company turned the drill rig around to test the new vein orientation and successfully hit both low-grade, bulk tonnage material along with a new high-grade vein system below the resource. This new vein system at Sullivan Gulch is lithologically controlled in quartz latite and is open to the south, laterally, and at depth.


In general, the mineralization at Sullivan Gulch is largely hosted by porphyritic rhyolite and latite units, capped by a banded rhyolite formation, all of which are of mid-Miocene age. The gold-silver mineralization itself consists of a zone of moderately intense low-sulphidation epithermal veining, clay alteration and related disseminated sulphides (mostly pyrite). Drilling to date at Sullivan Gulch has delineated mineralization extending over a strike length of 1,000 m with a width of 200 m and a depth of 350 m. IP indicates the potential for mineralization to extend a further 900 m to the south of the southern-most drilled section of Sullivan Gulch.


Additionally, the Company’s success at targeting high-grade at Sullivan Gulch, including the results today which have encountered a new vein system, suggests further optimization of the high-grade gold-silver geological model at Sullivan Gulch.


To view a cross section of Sullivan Gulch, click on the link below:


To view a photo of drill core from Sullivan Gulch, click on the link below:


To view a drill plan map of Sullivan Gulch, click on the link below:


Sampling and QA/QC Procedure


Thorough QA/QC protocols are followed on the Project, including insertion of duplicate, blank and standard samples in the assay stream for all drill holes. The samples are submitted directly to American Assay Labs in Reno, Nevada for preparation and analysis. Analysis of gold is performed using fire assay method with atomic absorption (AA) finish on a 1 assay ton aliquot. Gold results over 5 g/t are re-run using a gravimetric finish. Silver analysis is performed using ICP for results up to 100 g/t on a 5-acid digestion, with a fire assay, gravimetric finish for results over 100 g/t silver.


Qualified Person


The scientific and technical information contained in this news release has been reviewed and approved by E. Max Baker Ph.D. (F.AusIMM), Integra’s Vice President Exploration of Post Falls, Idaho, a “Qualified Person” as defined in National Instrument 43- 101 – Standards of Disclosure for Mineral Projects.


About Integra Resources


Integra is a development-stage mining company focused on the exploration and de-risking of the past producing DeLamar gold-silver project in Idaho, USA. Integra is led by the management team from Integra Gold Corp. which successfully grew, developed and sold the Lamaque Project, in Quebec, for C$600m in 2017. Since acquiring the DeLamar Project, which includes the adjacent DeLamar and Florida Mountain gold and silver deposits, in late 2017, the Company has demonstrated significant resource growth and conversion while providing robust economic studies in its maiden preliminary economic assessment and now pre-feasibility study. An independent technical report for the PFS on the DeLamar Project has been prepared in accordance with the requirements of NI 43-101 and is available under the Company’s profile at and on the Company’s website at


Posted May 25, 2022

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