Marimaca appoints Stantec to progress PEA for the integration of the Pampa Medina project

The study will be completed by Stantec and the Mineral Resource Estimate (MRE) by Caracle Creek Chile SpA.

Pampa Medina includes the recently acquired Pampa Medina Main and Madrugador copper deposits, which have historical non-NI 43-101 compliant mineral resource estimates.

The mineralisation at the projects consists of shallow, relatively high-grade, high acid solubility, copper oxides, and leachable sulphides. Marimaca is currently preparing an updated MRE for Pampa Medina and has commenced sample selection for an initial metallurgical test work program, comprising 1 m columns and bottle roll tests.

Marimaca has completed a comprehensive review of the technical data for the project, including re-logging of core, validation of the assay database for approximately 41 000 m of drilling, analytical acid consumption data, and partial sequential copper analysis to give indications of potential metallurgical recoveries. Based on these reviews, Marimaca is confident to progress to the next stage of technical review and study.

The PEA will examine the feasibility of opencast mining, crushing and leaching the material mined onsite at Pampa Medina before piping pregnant leach solution (PLS) to a centralized SX-EW facility in the proposed MOD development, with an additional return pipeline for raffinate solution. The MOD DFS is being prepared with potential future expansion in mind, which will impact key infrastructure including water supply and storage infrastructure, power, site layout, acid management and storage, and civil and earthworks.

Hayden Locke, President & CEO, commented:

“We believe Pampa Medina offers us a fantastic opportunity to increase the future scale of production from the capacity being considered in the MOD DFS. Madrugador is too small to contemplate a standalone development, and while Pampa Medina Main has the required scale for a small standalone development, we believe developing these assets synergistically, utilising the planned infrastructure of the MOD, can capture significant capital cost benefits.

"We also see the development of leaching infrastructure in the Pampa Medina Area as allowing us to unlock the significantly lower-grade oxide opportunities that exist in the area.”

Read the article online at: https://www.globalminingreview.com/mining/14022025/marimaca-appoints-stantec-to-progress-pea-for-the-integration-of-the-pampa-medina-project/