Marimaca announces infill drilling results

The drilling intersected mineralisation in-line with the current geological interpretation of the MOD. Drilling in the south-east zone of the MOD, on trend with the Sierra and Sorpresa satellite targets, continues to demonstrate extensions to green-oxide rich mineralisation beyond the previously interpreted limits of the 2019 mineral resource estimate (MRE). Copper oxide mineralisation also remains open to the East of the MOD. Hole MAR-158 was drilled on an approximately 150 m step-out from the eastern pit limits and intersected continuations of shallow green oxide mineralisation. Drilling on the western boundary of the MOD confirmed limits of copper oxide mineralisation with lower-grade intersections of thinning mineralisation. In the central MOD, hole MAR-65Ext intersected extensions of higher-grade mineralisation into the MAMIX zone.

Highlights

• Infill drilling intersected extensions to known green-oxide mineralisation in the south-east zone of the MOD, consistent with previous 2022 results.
• MAMIX drilling intersected extensions to higher grade oxide and mixed mineralization at depth, improving confidence in the higher-grade core of the MOD and MAMIX.
• Oxide intersections from step-out drilling on the north-eastern boundary of the MOD (MAR-158) demonstrates a material broadening of the MOD’s oxide halo to the east which is consistent with previous step-out drilling (MAR-126).
• Notable intersections include:
  • MAR-65Ext intersected 332 m at 0.44% CuT from 36 m, including a higher-grade extension of 78 m at 0.90% CuT from 218 m.
  • LAR-96 intersected 98 m at 0.41% CuT from surface including 22 m at 1.14% CuT from surface.
  • MAR-172 intersected 200 m at 0.25% CuT from 12m including 66 m at 0.51% CuT from 38 m.
  • MAR-171 intersected 164 m at 0.37% CuT from 2 m including 96 m at 0.53% CuT from 70 m.
  • MAR-158 intersected 72 m at 0.36% CuT from 120 m.
  • LAR-03 intersected 346 m at 0.32% CuT from 2 m including 40 m at 0.34% CuT from 272 m.
  • LAR-25 intersected 340 m at 0.33% CuT from 12 m.
• The 2022 drilling program is now finalised with 38 570 m of RC and 3000 m of diamond drilling complete.
  • 21 992 m of remaining drilling to be released pending final assay results

Sergio Rivera, VP Exploration of Marimaca Copper, commented:

“We have now completed the 2022 Marimaca drilling campaign with our work now focused on the upcoming mineral resource update planned for late September or early October. Overall, the 2022 program was a success. All our objectives going into the program were met and results continue to be in-line with our geological interpretation at the MOD, with the consistency of the Marimaca mineralisation demonstrated again in this latest batch of results.”

Read the article online at: https://www.globalminingreview.com/mining/12092022/marimaca-announces-infill-drilling-results/