# Marimaca Enters Final Due Diligence on a 2027 Copper Build With 3 Lenders Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/marimaca-enters-final-due-diligence-on-a-2027-copper-build-with-3-lenders--5cba62cb-92f6-4054-a153-3cf992c982d9 Original source: https://www.cruxinvestor.com/posts/marimaca-enters-final-due-diligence-on-a-2027-copper-build-with-3-lenders Publisher: cruxinvestor Original announcement: 2026-09-22T00:00:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Marimaca Copper - Ticker: MARI - Exchange: Unavailable - Region: Chile - Primary commodity: Copper - Secondary commodities: None reported - Document categories: Drill results, Economic study, Agreement transaction, Resource update - Extracted: 2026-09-22 15:17:40 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Marimaca Copper has narrowed its debt financing search for the Marimaca Oxide Deposit \(MOD\) in Chile to three senior secured lenders currently conducting technical due diligence. The project, a permitted open-pit heap leach, features strong economics including a 31% IRR and 2.5-year payback at a $4.30/lb copper price, with construction targeted for 2027. Reasoning: The announcement details significant progress in securing debt financing for a permitted copper project with strong economic indicators and defined reserves. - Positive factor: Advanced stage of debt financing with 3 senior secured lenders in technical due diligence - Positive factor: Strong project economics with 31% IRR and 2.5 year payback at base case copper price - Positive factor: Proven and probable reserves disclosed for the MOD project - Positive factor: Low strip ratio of 0.8:1 for an open pit project - Positive factor: Permitting milestone achieved with environmental approval in Q4 2025 - Negative factor: Construction timeline and funding completion depend on final lender selection and legal due diligence through mid-2027 - Negative factor: Project exposure to copper price volatility due to management's decision not to hedge Facts used in scoring: 3 ## Classification and evidence **PFS Complete** Polarity: positive Definition: AACE Class 3 study complete. Why it applies: The document states the project has a 'completed feasibility study'. Evidence · text > a permitted open-pit heap leach project with a completed feasibility study **Probable Reserve** Polarity: positive Definition: Indicated Resource with demonstrated economic viability after applying modifying factors. Why it applies: The MOD carries proven and probable reserves. Evidence · text > The MOD carries proven and probable reserves of 179 million metric tons \(t\) at 0.42% copper **High IRR** Polarity: positive Definition: Post-tax real unlevered IRR in the strong tier or better. Why it applies: The project yields an IRR of 31% at the base case copper price. Evidence · text > an internal rate of return of 31% **Fast Payback** Polarity: positive Definition: Payback in the strong tier or better, on the required basis. Why it applies: The payback period is 2.5 years at the base case copper price. Evidence · text > a payback period of 2.5 years ## Extracted facts Stored fact records: 2. Some facts used in scoring do not have a stored record. ## Drill Results (2) ### Fact 1 [Link to this fact](https://atlas-extractions.minestarters.com/news/marimaca-enters-final-due-diligence-on-a-2027-copper-build-with-3-lenders--5cba62cb-92f6-4054-a153-3cf992c982d9#fact-drill-facts-1) Pampa Medina · copper Needs review: drill\_no\_hole\_id #### Identity - Project: Pampa Medina - Commodity: copper - Region: chile - Reported Region: chile - Ticker: MARI #### Geometry - Grade: 0.96 - Grade Unit: % - Intercept: 216 m - From: 466 m - To: 682 m - Intercept Depth: 466 m #### Classification - Sample Type: drill - Group ID: Pampa\_Medina:466-682 #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: Drilling results from the Pampa Medina exploration target. - Positive factor: Strong copper grade for Pampa Medina Evidence · text > Pampa Medina... returned 216 meters \(m\) at 0.96% copper from 466m on 150m centers, including 62m at 2.20% copper #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ### Fact 2 [Link to this fact](https://atlas-extractions.minestarters.com/news/marimaca-enters-final-due-diligence-on-a-2027-copper-build-with-3-lenders--5cba62cb-92f6-4054-a153-3cf992c982d9#fact-drill-facts-2) Pampa Medina · copper Needs review: drill\_no\_hole\_id #### Identity - Project: Pampa Medina - Commodity: copper - Region: chile - Reported Region: chile - Ticker: MARI #### Geometry - Grade: 2.2 - Grade Unit: % - Intercept: 62 m #### Classification - Sample Type: drill #### QA/QC - QA/QC Disclosed: Yes - QA/QC Methods: standards, duplicates #### Review - Needs Review: Yes - Review Reason: drill\_no\_hole\_id - Interp. Status: scored - Historical: No #### Dates - Event date: 2026-09-22T00:00:00.000Z Reasoning: High-grade sub-interval within the Pampa Medina drill hole. - Positive factor: High-grade intercept Evidence · text > including 62m at 2.20% copper #### Tags used in scoring **QA/QC Disclosed** Polarity: positive Definition: Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods \(blanks, standards, duplicates\). Why it applies: qaqc\_disclosed is true **Cut-off Undisclosed** Polarity: negative Definition: High-grade interval reported without stating the cut-off grade used for compositing. Why it applies: no cutoff\_grade was stated ## How Atlas produces this analysis Minestarters Atlas uses automated extraction to summarize mining announcements, identify reported measurements, and classify supporting evidence. Sentiment reflects the extracted narrative and classification rules; it is an interpretation, not a reported measurement. Evidence quotes and context are provided where available. Missing data, low-confidence results, and review flags indicate limitations. Check the original publisher announcement before relying on an interpretation.