# Heliostar Provides Progress Update on Ana Paula Feasibility Study Canonical Atlas analysis: https://atlas-extractions.minestarters.com/news/heliostar-provides-progress-update-on-ana-paula-feasibility-study--a8b9708b-864e-4cf8-b6a3-16c9f9b3b3f5 Original source: https://investingnews.com/heliostar-provides-progress-update-on-ana-paula-feasibility-study/ Publisher: investingnews Original announcement: 2026-09-21T09:30:00.000Z Analysis by Minestarters Atlas Atlas analysis published: Unknown date Atlas analysis updated: Unknown date - Company: Heliostar Metals Ltd. - Ticker: HSTR - Exchange: TSXV - Region: Guerrero, Mexico - Primary commodity: Gold - Secondary commodities: Silver - Document categories: Economic study, Resource update, Metallurgy - Extracted: 2026-09-21 15:18:33 UTC Narrative sentiment: 0.60 · Bullish ## Minestarters Atlas summary Heliostar Metals provides a progress update on the Ana Paula Feasibility Study in Mexico, which is on track for completion in Q2 2027. Key milestones include the finalization of the process flowsheet, completion of significant metallurgical testing, and engineering optimizations to increase throughput and reduce surface disturbance via an underground mining approach. Reasoning: The document provides a comprehensive progress update on a major Feasibility Study, highlighting significant engineering and metallurgical advancements that de-risk the project towards a 2027 decision. - Positive factor: Feasibility Study on track for Q2 2027 - Positive factor: Metallurgical test work substantially completed - Positive factor: Trade-off studies identifying cost-saving underground access - Positive factor: Throughput optimization increasing from 1,800 to 2,000 tpd - Negative factor: Transition from fixed gold grade cut-off to NSR model introduces economic uncertainty Facts used in scoring: 2 ## Classification and evidence **PFS Complete** Polarity: positive Definition: AACE Class 3 study complete. Why it applies: The company is currently advancing the Ana Paula Feasibility Study, which is the next stage after the PEA. Evidence · text > Feasibility Study remains on track for completion in Q2 2027 **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: The process flowsheet involves conventional grinding, flotation, and CIL recovery. Evidence · text > amenable to recovery using conventional grinding and flotation followed by bio-oxidation and carbon-in-leach \("CIL"\) recovery **Refractory Ore** Polarity: negative Definition: Ore requires oxidation/pressure treatment before recovery — a processing and recovery risk. Why it applies: The requirement for a BIOX \(bio-oxidation\) circuit indicates the presence of refractory sulfide mineralization. Evidence · text > pilot plant-scale testing of the proposed bio-oxidation \("BiOX"\) circuit **POX/BIOX Route** Polarity: neutral Definition: Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX. Why it applies: the document describes a pox\_biox route \("BIOX"\) **Single Domain Only** Polarity: negative Definition: Testing limited to one composite or domain — representativeness not established. Why it applies: only one composite was tested ## Extracted facts Stored fact records: 1. Some facts used in scoring do not have a stored record. ## Metallurgical Results (1) ### flotation [Link to this fact](https://atlas-extractions.minestarters.com/news/heliostar-provides-progress-update-on-ana-paula-feasibility-study--a8b9708b-864e-4cf8-b6a3-16c9f9b3b3f5#fact-metallurgical-facts-1) Ana Paula · gold #### Identity - Project: Ana Paula - Commodity: gold - Region: mexico - Reported Region: Guerrero, Mexico - Ticker: HSTR #### Test Work - Program Status: detailed - Test Type: flotation - Processing Route: grinding, flotation, bio-oxidation, and CIL - Sample: bulk composite of flotation concentrate #### Recovery - Recovery Basis: unspecified #### Review - Needs Review: No - Historical: No #### Dates - Event date: 2026-09-21T00:00:00.000Z Reasoning: Metallurgical testing confirms the ore is amenable to flotation and BIOX/CIL, though the need for bio-oxidation indicates refractory characteristics. - Positive factor: Results in line with PEA amenability testing - Negative factor: Requires bio-oxidation \(BIOX\) circuit Evidence · text > mineralized material is amenable to recovery using conventional grinding and flotation followed by bio-oxidation and carbon-in-leach \("CIL"\) recovery #### Tags used in scoring **Mill Route** Polarity: neutral Definition: Processing via mill or concentrator \(CIL, CIP, tank leach, flotation\). Why it applies: processing\_route matches the mill\_cil signal **POX/BIOX Route** Polarity: neutral Definition: Pressure or bio-oxidation for refractory ore — high CAPEX and OPEX. Why it applies: processing\_route matches the pox\_biox signal ## 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.