# Rare Earths Mining News in Chile Canonical page: https://atlas-staging.minestarters.com/news?commodities=rare_earths®ions=chile Atlas summarizes and classifies mining-industry stories from third-party publishers. Follow each source link for the original reporting. Results: 5 Returned: 5 Coverage: drill results, resource updates, and metallurgy; primary commodity matching; all time unless dates are supplied. Region: Chile (chile) Commodity: Rare Earths (rare_earths) Applied filters: {"regions":["chile"],"commodities":["rare_earths"],"commodity_scope":"primary","document_types":["drill_results","resource_update","metallurgy"],"document_type_match":"any"} Sort: published_at desc Offset: 0; page size: 10 ## Study nearly doubles value, lifts resource for Aclara’s Penco rare earths project - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/study-nearly-doubles-value-lifts-resource-for-aclara-s-penco-rare-earths-project--b0d68406-ab21-4395-a50e-d1e456d23489) · [Markdown](https://atlas-staging.minestarters.com/news/study-nearly-doubles-value-lifts-resource-for-aclara-s-penco-rare-earths-project--b0d68406-ab21-4395-a50e-d1e456d23489.md) - Original announcement: 2026-10-19T16:25:51.000Z - Atlas analysis published: 2026-10-19T16:47:07.060Z - Atlas analysis updated: 2026-10-19T16:47:07.060Z - Company: Aclara Resources (ARA) - Original source: [northernminer](https://www.northernminer.com/news/study-nearly-doubles-value-lifts-resource-for-aclaras-penco-rare-earths-project/1003895866/) - Atlas sentiment: 0.701 - Atlas tags: Tonnage Growth, Contained Metal Growth Aclara Resources has released an updated Preliminary Economic Assessment (PEA) for its Penco rare earths project in Chile, which nearly doubles the project's NPV to $344 million. The update includes a larger mineral resource of 35.8 million tonnes of measured and indicated material and a 19% increase in contained rare earths. ## Aclara Resources Updates Penco Module Preliminary Economic Assessment - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/aclara-resources-updates-penco-module-preliminary-economic-assessment--9d82bf9c-fcf4-4e45-8d1c-c3c993cc5782) · [Markdown](https://atlas-staging.minestarters.com/news/aclara-resources-updates-penco-module-preliminary-economic-assessment--9d82bf9c-fcf4-4e45-8d1c-c3c993cc5782.md) - Original announcement: 2026-10-19T06:18:46.000Z - Atlas analysis published: 2026-10-19T12:31:20.218Z - Atlas analysis updated: 2026-10-19T12:31:20.218Z - Company: Aclara Resources Inc. (ARA) - Original source: [jmn](https://www.juniorminingnetwork.com/junior-miner-news/press-releases/3072-tsx/ara/213079-aclara-updates-penco-module-preliminary-economic-assessment.html) - Atlas sentiment: 0.748 - Atlas tags: PEA-Supporting, IRR Improvement, NPV Improvement, Tonnage Growth, Capex Increase, Opex Increase, Inferred Resource, Resource Update, Measured Resource, Indicated Resource, Category Upgrade, QP/CP Signed, NI 43-101 Compliant, Cut-off Disclosed, Permit Granted Aclara Resources announced an updated Preliminary Economic Assessment for its Penco Module project in Chile, reporting a significantly improved after-tax NPV of US$344 million and an IRR of 26.1%. The enhanced economics are primarily driven by an increase in processed mineral resources to 30.8 Mt and higher rare earth price forecasts. The project also secured its first-stage environmental approval and boasts high-quality Super Pure Rare Earth Carbonate production. ## ACLARA AND CAP INAUGURATE METALS AND ALLOYS DEMONSTRATION PLANT - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/aclara-and-cap-inaugurate-metals-and-alloys-demonstration-plant--5c862edd-8f8c-4ab1-a6c1-41dff1b31898) · [Markdown](https://atlas-staging.minestarters.com/news/aclara-and-cap-inaugurate-metals-and-alloys-demonstration-plant--5c862edd-8f8c-4ab1-a6c1-41dff1b31898.md) - Original announcement: 2026-10-07T11:16:15.282Z - Atlas analysis published: 2026-10-07T11:17:44.133Z - Atlas analysis updated: 2026-10-07T11:17:44.133Z - Company: Aclara Resources Inc. (ARA) - Original source: [cnw](https://www.newswire.ca/news-releases/aclara-and-cap-inaugurate-metals-and-alloys-demonstration-plant-890237400.html) - Atlas sentiment: 0.378 - Atlas tags: Mill Route, Bench Scale Only, Single Domain Only Aclara Resources Inc. and CAP S.A. have inaugurated a demonstration plant in Chile to develop proprietary technology for producing rare earth metals and alloys. The facility uses a molten salt electrolysis process to convert neodymium and praseodymium oxides into metals, with a target production capacity of 175 kg per day. ## Aclara Resources and Cap Inaugurate Metals And Alloys Demonstration Plant - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/aclara-resources-and-cap-inaugurate-metals-and-alloys-demonstration-plant--52c0e24c-0536-4e6c-885f-8a696aff8b9f) · [Markdown](https://atlas-staging.minestarters.com/news/aclara-resources-and-cap-inaugurate-metals-and-alloys-demonstration-plant--52c0e24c-0536-4e6c-885f-8a696aff8b9f.md) - Original announcement: 2026-10-07T00:00:00.000Z - Atlas analysis published: 2026-10-07T13:05:01.045Z - Atlas analysis updated: 2026-10-07T13:05:01.045Z - Company: Aclara Resources Inc. (ARA) - Original source: [jmn](https://www.juniorminingnetwork.com/junior-miner-news/press-releases/3072-tsx/ara/212460-aclara-and-cap-inaugurate-metals-and-alloys-demonstration-plant.html) - Atlas sentiment: 0.378 - Atlas tags: Mill Route, Single Domain Only Aclara Resources and CAP S.A. have inaugurated a demonstration plant in Chile to develop technology for producing rare earth metals and alloys. The facility uses a proprietary molten salt electrolysis process to convert neodymium and praseodymium oxides into metals, aiming to validate the technology for future industrial-scale operations in the United States. ## Aclara Introduces Super Pure Rare Earth Carbonate ("SPREC") - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/aclara-introduces-super-pure-rare-earth-carbonate-sprec--049f2aa2-4486-4901-bad4-ee5ec5b6d946) · [Markdown](https://atlas-staging.minestarters.com/news/aclara-introduces-super-pure-rare-earth-carbonate-sprec--049f2aa2-4486-4901-bad4-ee5ec5b6d946.md) - Original announcement: 2026-06-29T11:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Aclara Resources Inc. (ARA) - Original source: [tmx](https://money.tmx.com/en/quote/ARA/news/7830759834096994/aclara-introduces-super-pure-rare-earth-carbonate-sprec) - Atlas sentiment: 0.441 - Atlas tags: High Recovery, Mill Route Aclara Resources has successfully developed 'Super Pure Rare Earth Carbonate' (SPREC) at its pilot plant in Chile. The new product offers ~99% rare earth content, significantly higher than conventional MREC, and is intended to improve downstream separation and logistics for the Carina and Penco projects. # Atlas tag definitions - **Bonanza Intercept:** Exceptionally high-grade zone, well above the deposit-type norm. - **True Width Disclosed:** Actual thickness perpendicular to structure is stated, not just downhole length. - **Step-Out Extension:** Mineralization extended beyond the previously known limit. - **QA/QC Disclosed:** Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates). - **Compositing Transparent:** Cut-off grade and internal dilution rules are clearly stated for reported intervals. - **Refractory Ore:** Complex mineralogy requiring oxidation or other special processing before recovery. - **Apparent Width Only:** Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness. - **Stale Data Re-release:** Historical results re-announced with no new assays or reinterpretation — low genuine novelty. - **No QA/QC Disclosure:** Release does not disclose QA/QC — lab certification, CP/QP sign-off and assay protocols cannot be checked from this document. - **Metal Equivalent Opaque:** Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used. - **Cut-off Undisclosed:** Cut-off grade not disclosed — cannot assess comparability to prior estimates or peers. - **Deleterious Elements Present:** Penalty elements (arsenic, antimony, etc.) or refractory concerns noted in the release. - **Infill Drilling:** Confirmatory drilling to raise resource confidence, not new discovery. - **Nearology Play:** Value premise rests on proximity to a known deposit rather than own results. - **Measured Resource:** Highest confidence category — tonnage, grade, shape well-established from closely-spaced drilling. Basis for Proven Reserves. - **Indicated Resource:** Reasonable geological confidence based on adequate drilling; continuity can be assumed. Basis for Probable Reserves. - **Proven Reserve:** Measured Resource with demonstrated economic viability after applying modifying factors. - **Probable Reserve:** Indicated Resource with demonstrated economic viability after applying modifying factors. - **Category Upgrade:** Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal. - **Tonnage Growth:** Significant tonnage increase (≥15%) vs prior estimate with grade maintained or improved. - **Grade Improvement:** Average resource grade improved vs prior estimate — better deposit economics. - **Contained Metal Growth:** True scale improvement — contained metal ounces/tonnes increased vs prior, accounting for both tonnage and grade changes. - **QP/CP Signed:** Qualified Person (QP) or Competent Person (CP) named and signed off — a member of a recognized professional association (e.g., AusIMM, SME, AIG, P.Geo) with relevant experience. - **Cut-off Disclosed:** Cut-off grade used for resource reporting is clearly stated, enabling like-for-like comparison. - **JORC Compliant:** Resource estimate prepared in compliance with JORC Code (Australia) — high reporting standard. - **NI 43-101 Compliant:** Resource estimate prepared in compliance with NI 43-101 (Canada) — high reporting standard. - **Inferred Resource:** Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. - **All Inferred:** 100% of resource is Inferred category — very early stage, no engineering confidence. - **Grade Decline:** Average grade dropped >5% vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling. - **Tonnage Decline:** Resource tonnage decreased vs prior estimate — pit optimization removed marginal material or geological model revised down. - **Category Downgrade:** Resource confidence decreased — Measured downgraded to Indicated, or Indicated to Inferred. Unusual and concerning. - **Contained Metal Decline:** Contained metal decreased vs prior despite tonnage growth — grade dilution exceeds volume gain. - **Dilutive Growth:** Tonnage increased but contained metal flat or down — likely from lower cut-off grade, not geological expansion. - **Cut-off Lowered:** Cut-off grade significantly reduced vs prior estimate — tonnage growth may be artificial inflation. - **Cut-off Undisclosed:** Cut-off grade not disclosed — cannot assess comparability to prior estimates or peers. - **Historical Estimate Only:** Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling. - **Stale Estimate:** Effective date is >2 years old — data currency concern, may not reflect current geological understanding. - **No Contained Metal:** Tonnage and grade reported but contained metal not calculated or disclosed — incomplete reporting. - **No QP/CP Disclosure:** No Qualified Person or Competent Person named — lower credibility for the estimate. A QP/CP should be a member of a recognized professional association with relevant experience. - **Maiden Resource:** First formal MRE for the project — establishes baseline but typically exploration-stage with high Inferred component. - **Resource Update:** Revised estimate for an existing resource — compare to prior to assess progress. - **PEA-Supporting:** Resource estimate prepared to support a Preliminary Economic Assessment — early-stage study. - **PFS-Supporting:** Resource estimate prepared to support a Pre-Feasibility Study — requires adequate M&I component. - **DFS-Supporting:** Resource estimate prepared to support a Definitive Feasibility Study — requires high M&I confidence. - **High Recovery:** Recovery at or above the exceptional band for the commodity and processing route. - **Pilot Scale Complete:** Pilot or demonstration plant testing completed under continuous operation. - **Free Milling:** Simple, clean ore amenable to standard processing without oxidation. - **Multi-Domain Tested:** Variability across ore domains (oxide, transition, fresh) has been addressed. - **Recovery Improving:** Recovery improved versus a like-for-like prior test program on the same domain and route. - **Low Recovery:** Recovery below the weak band for the commodity and processing route. - **Bench Scale Only:** Only preliminary bench tests completed — no locked-cycle or pilot work. - **Refractory Ore:** Complex mineralogy requiring oxidation or other special processing before recovery. - **Single Domain Only:** Testing limited to one composite or domain — representativeness not established. - **Recovery Stagnant:** No improvement across multiple test programs on comparable material. - **Theoretical Recovery Only:** Only theoretical or liberation-derived recovery reported, with no actual test result. - **Heap Leach Route:** Processing via heap leach — lower CAPEX and OPEX, lower recovery expected. - **Mill Route:** Processing via mill or concentrator (CIL, CIP, tank leach, flotation). - **Gravity Route:** Gravity separation forms a material part of the flowsheet. - **POX/BIOX Route:** Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX. - **Byproduct Commodity:** The tested commodity is a byproduct rather than the primary economic driver.