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Aurbis Resources Corp
Symbol AURR
Shares Issued 21,643,420
Close 2026-07-15 C$ 0.135
Market Cap C$ 2,921,862
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Aurbis Resources identifies hornfels alteration at Ecru

2026-07-22 11:11 ET - News Release

Mr. Johan Lambrechts reports

MORE GOLD-ASSOCIATED HORNFELS MAPPED ON THE ECRU GOLD PROJECT IN NEVADA

Aurbis Resources Corp. has completed a second phase of mapping and sampling on its 100-per-cent-owned Ecru gold project in Lander county, Nevada.

Key highlights:

  • Mapping identifies areas of strong hornfels alteration, including 800-metre-long and 500-metre-long zones west of the Ecru intrusion.
  • Hornfels alteration is a critical indicator for Robertson-style gold mineralization, with gold mineralization directly associated with it at Nevada Gold Mines' Robertson deposit two kilometres away.
  • Geophysics will be used to identify additional hornfelsed areas under transported cover around the Ecru intrusion.

"Hornfels is a fundamental component of the intrusion-related gold mineralization Aurbis is exploring for at Ecru, and identifying it in the small window of outcropping geology on the project is fantastic.

"We look forward to investigating the potential for more of this hornfels mineralization host to occur under transported cover around the Ecru intrusion by using the HD [high-definition] geophysical data we expect in the next few weeks," stated Johan Lambrechts, chief executive officer.

This second phase identified additional zones of hornfels alteration, a rock-forming process that is a strong indicator of gold-bearing systems. Two main zones were identified, measuring approximately 800 metres and 500 metres in length.

Intrusion-related gold deposits surrounding the Ecru project are hornfels/skarn systems associated with reduced intrusions. Gold mineralization is associated with hornfels alteration. The intrusion heated the host rocks, forming a zone (contact aureole), within which hornfels alteration occurred, and gold may precipitate.

The geophysical interpretation of Ecru's magnetic and gravity data is also eagerly awaited, since it will be used to identify additional areas of potential hornfels alteration that do not outcrop on the project, enlarging the discovery potential of Ecru.

The geochemical results from both mapping phases will be used to fine-tune the mineral assemblage and hone in on a final set of targets, which will likely be tested by induced polarization (IP) surveys before final drill design.

Second phase of mapping on Ecru

The second phase of mapping on the Ecru gold project identified additional areas of hornfels alteration. The main zone stretches for almost 800 metres in a northeasterly direction, while a second 500-metre-long zone trends eastward and was mapped just south of the main 800-metre zone. Rock samples were collected during this mapping program and sent to the laboratory in Reno. Aurbis eagerly awaits the results from both phases of sampling and will interpret and release them as soon as possible.

Identifying hornfels alteration on the project is a significant step toward identifying potential gold mineralization on Ecru since it is a defining characteristic of this type of gold mineralization found in the region. The emplacement of the Robertson intrusion heated the host rocks significantly, forming a zone (contact aureole) up to one kilometre from the intrusion, within which hornfels alteration occurred.

The ore deposits within the Tenabo district (including Robertson) surrounding the Ecru project can be broadly characterized as hornfels/skarn systems associated with reduced intrusions. Gold mineralization is associated with the contact metamorphism of the host rocks into hornfels, and therefore the mineralization target is the hornfelsed zone within one kilometre of the intrusion.

It is also noted that holes NECD001 and NECD002, drilled in 2018 by S2 Resources (exploration update -- Ecru, Nevada, Feb. 14, 2019), intersected gold mineralization that represents the mineralization characteristics of this type of gold deposit. NECD001 was drilled in the contact aureole and intersected 3.6 metres at 1.6 grams per tonne gold from 99 metres, while NECD002 was drilled inside the intrusion and only intersected low-level gold anomalism. These results reflect that gold mineralization is associated with the alteration assemblage within the contact aureole, where heat and geochemical conditions within the aureole concentrate and precipitate gold that is only at low levels within the source intrusion itself.

Both holes intersected antimony, arsenic, mercury, copper, zinc, molybdenum and tellurium anomalism, associated with the Robertson deposit and style of mineralization.

Geophysical data interpretation

Aurbis is still awaiting the results of the magnetic and gravity data interpretation. The company is excited to review the data for buried hornfelsed zones around the intrusion that do not outcrop and represent significant targets in the company's hunt for gold mineralization at Ecru.

In addition to the activities described above, Aurbis also completed lidar and photogrammetry surveys over the Ecru gold project, which will be incorporated into the full data suite and assist with data analysis and target identification.

Future activities

The geochemical results for all rock samples are expected to be received in the next four to six weeks and will be vital to the interpretation of the mapping and geophysical data to date.

The results of the magnetic and gravity data interpretation are highly anticipated and will directly influence the final geophysical step before final drill design: a targeted IP survey to identify specific conductive, sulphide-bearing areas associated with the hornfels zones and geochemical target areas.

Aurbis believes this is a robust exploration plan and gives the company the best likelihood of success for discovery on the Ecru gold project.

Aurbis looks forward to keeping its investors and followers informed of the company's progress.

Qualified person

Mr. Lambrechts, qualified person, is the company's qualified person as defined by National Instrument 43-101 and has reviewed the scientific and technical information that forms the basis for portions of this news release. Mr. Lambrechts is a member of the Australian Institute of Geoscientists (No. 5900). He has approved the disclosure herein. Mr. Lambrechts is not independent of the company as he is a director of the company.

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