Aztec to Resume Drilling at the Tombstone Gold-Silver District in Southeastern Arizona - Seite 3

Upon the completion of diamond drilling, Aztec plans additional work including:

• Examining multi-element results for correlative, spatial, and geologic relationships.
• Terraspec analysis of the drill core.
• Detailed mapping of the Contention Open Pit, accompanied with Terraspec.
• Update the drilling data into the Leapfrog model, and update known district drilling, geology (lithology, structural, alteration, mineralogy, mineralization age-dating), geophysics, geochemistry, and UG workings to identify mineralization trends to help target the shallow and deep-CRD drilling.
• Examine the possibility of using seismic geophysics for identifying the overthrusts, faults and folding in the carbonates at depth.
• Potential 43-101 compliant resource estimation

Tombstone Project Overview

The Tombstone project is located 100 kilometers (km) southeast of Tucson, Arizona and covers much of the historic Tombstone silver district. Tombstone is renowned for its high grade, oxidized, silver-gold-lead-zinc-copper mesothermal and CRD mineralization hosted in veins, mantos, pipes and disseminated orebodies that were mined in the late 1800's and early 1900's.

Host rocks to the mineralization were primarily the clastic sediments of the Cretaceous Bisbee Formation. Below 200 meters (m) in depth, the Bisbee is underlain by the same Paleozoic limestone formations that host the Taylor zinc-lead-silver deposit located 60 km southwest of Tombstone. Taylor was discovered by Arizona Mining in 2015 and they accepted a takeover bid from South32 Limited in 2018.

Although the historic silver mines at Tombstone were generally small, Aztec believes they could be related to much larger mesothermal and CRD orebodies below the old mines. Since 2017, Aztec has completed geological mapping, geochemical sampling and geophysical surveying to identify the most prospective areas for Au-Ag mineralization around and below the Contention open pit, and CRD zinc-lead-copper-silver-gold mineralization below the entire district.

The 2021 drill holes were collared along the western rim and inside of the north and central parts of the Contention Pit and intersected mineralization over a north-south length of 600 meters by over 150 m of east-west width and to maximum depths of 175 m. The 2020 drilling had an area of mineralization of 850 m long by an average of 75 m wide and to maximum depths of 200 m deep. The combined 2020 and 2021 drilled area now spans 900 m long by over 230 m wide and to maximum depths of 200 m, with Au-Ag mineralization still open in all directions and at depth.