# Silica Mining News in Brazil Canonical page: https://atlas-staging.minestarters.com/news?commodities=silica®ions=brazil Atlas summarizes and classifies mining-industry stories from third-party publishers. Follow each source link for the original reporting. Results: 6 Returned: 6 Coverage: drill results, resource updates, and metallurgy; primary commodity matching; all time unless dates are supplied. Region: Brazil (brazil) Commodity: Silica (silica) Applied filters: {"regions":["brazil"],"commodities":["silica"],"commodity_scope":"primary","document_types":["drill_results","resource_update","metallurgy"],"document_type_match":"any"} Sort: published_at desc Offset: 0; page size: 10 ## Homerun Resources Inc. Completes Acquisition of 442.7-Hectare Fazenda Land Package in Santa Maria Eterna, Bahia, Brazil - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/homerun-resources-inc-completes-acquisition-of-442-7-hectare-fazenda-land-packag--39de2478-c207-4c17-aee3-b13187c9e3a6) · [Markdown](https://atlas-staging.minestarters.com/news/homerun-resources-inc-completes-acquisition-of-442-7-hectare-fazenda-land-packag--39de2478-c207-4c17-aee3-b13187c9e3a6.md) - Original announcement: 2026-10-21T12:00:00.000Z - Atlas analysis published: 2026-10-21T12:21:24.716Z - Atlas analysis updated: 2026-10-21T12:21:24.716Z - Company: Homerun Resources Inc. (HMR.V) - Original source: [orestocks](https://orestocks.com/company/HMR.V/press-releases/8197171906028447) - Atlas sentiment: 0.347 - Atlas tags: Resource Update Homerun Resources Inc. has completed the US$1.1 million acquisition of the 442.7-hectare Fazenda land package in Bahia, Brazil. This acquisition secures direct surface rights adjacent to the company's existing industrial target, supporting its district-scale control strategy in the Santa Maria Eterna silica sand district. ## Homerun Resources Inc. Thermal Pre-Treatment with Acid Leaching Produces Plus 4N Silica Sand Supporting Bulk Sample Distribution and Advanced Materials Development - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/homerun-resources-inc-thermal-pre-treatment-with-acid-leaching-produces-plus-4n--3ac68ac5-07a7-41c9-92c5-4273dae3c51f) · [Markdown](https://atlas-staging.minestarters.com/news/homerun-resources-inc-thermal-pre-treatment-with-acid-leaching-produces-plus-4n--3ac68ac5-07a7-41c9-92c5-4273dae3c51f.md) - Original announcement: 2026-08-27T12:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Homerun Resources Inc. (HMR) - Original source: [newsfile](https://www.newsfilecorp.com/release/311789/Homerun-Resources-Inc.-Thermal-PreTreatment-with-Acid-Leaching-Produces-Plus-4N-Silica-Sand-Supporting-Bulk-Sample-Distribution-and-Advanced-Materials-Development) - Atlas sentiment: 0.493 - Atlas tags: Mill Route Homerun Resources has successfully produced +4N (99.99%) purity silica sand through a 2-hour thermal pre-treatment and acid leaching process. The purified material, containing only 81 ppm impurities, has been shipped to prospective customers and research partners for qualification. ## Homerun Resources Inc. Confirms Optimized +4N Purification Plant Pathway and Advances CAPEX Configurations for the SME High-Purity Silica - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/homerun-resources-inc-confirms-optimized-4n-purification-plant-pathway-and-advan--08888473-0c60-41f6-8095-e5b14e4f3245) · [Markdown](https://atlas-staging.minestarters.com/news/homerun-resources-inc-confirms-optimized-4n-purification-plant-pathway-and-advan--08888473-0c60-41f6-8095-e5b14e4f3245.md) - Original announcement: 2026-07-09T12:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Homerun Resources Inc. (HMR) - Original source: [tmx](https://money.tmx.com/en/quote/HMR/news/5377111162623311/homerun-resources-inc-confirms-optimized-4n-purification-plant-pathway-and-advan) - Atlas sentiment: 0.358 - Atlas tags: Mill Route Homerun Resources has confirmed that calcination followed by acid leaching is the preferred pathway to produce +4N high-purity silica at its Santa Maria Eterna project. The company is now advancing CAPEX studies for two configurations, including a hybrid model that integrates an Enduring Energy Storage system. ## Homerun Resources Inc. Advances Phase 2 of Its Three-Phase Purification Platform - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/homerun-resources-inc-advances-phase-2-of-its-three-phase-purification-platform--133aba0e-9e22-4881-85ae-1cb13da41cf6) · [Markdown](https://atlas-staging.minestarters.com/news/homerun-resources-inc-advances-phase-2-of-its-three-phase-purification-platform--133aba0e-9e22-4881-85ae-1cb13da41cf6.md) - Original announcement: 2026-05-28T12:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Homerun Resources Inc. (HMR) - Original source: [tmx](https://money.tmx.com/en/quote/HMR/news/7339224995380927/homerun-resources-inc-advances-phase-2-of-its-three-phase-purification-platform) - Atlas sentiment: 0.347 - Atlas tags: Bench Scale Only Homerun Resources has commissioned Dorfner Anzaplan to perform additional chemical leaching test work to optimize the Phase 2 purification route for its Santa Maria Eterna silica project. This optimization step aims to minimize OPEX and streamline operations before finalizing the CAPEX package and process design. ## Homerun Resources Inc. Engages Minerali Industriali Engineering for Engineering and CAPEX Development of a Primary Silica Sand Processing Plant - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/homerun-resources-inc-engages-minerali-industriali-engineering-for-engineering-a--1eb5bace-dfb7-41b7-9775-a86081c3b4b7) · [Markdown](https://atlas-staging.minestarters.com/news/homerun-resources-inc-engages-minerali-industriali-engineering-for-engineering-a--1eb5bace-dfb7-41b7-9775-a86081c3b4b7.md) - Original announcement: 2026-05-20T12:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Homerun Resources Inc. (HMR) - Original source: [tmx](https://money.tmx.com/en/quote/HMR/news/6343948434386598/homerun-resources-inc-engages-minerali-industriali-engineering-for-engineering-a) - Atlas sentiment: 0.37 - Atlas tags: Mill Route Homerun Resources has engaged Minerali Industriali Engineering (MIE) to design a 350,000 tonnes per year primary silica sand processing plant at its Santa Maria Eterna deposit in Brazil. This Phase 1 project aims to produce +99.9% SiO2 (3N) industrial grade silica to supply both industrial customers and the company's own solar glass manufacturing facility. ## Homerun Resources Inc. and UC Davis Produce Fused Silica Glass from SME Silica Sand Using Fast Joule Heating and File Patent Application for Femtosecond Silica Purification Process - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/homerun-resources-inc-and-uc-davis-produce-fused-silica-glass-from-sme-silica-sa--7c131bbf-e991-402f-b70c-754d87c9f29d) · [Markdown](https://atlas-staging.minestarters.com/news/homerun-resources-inc-and-uc-davis-produce-fused-silica-glass-from-sme-silica-sa--7c131bbf-e991-402f-b70c-754d87c9f29d.md) - Original announcement: 2026-03-10T12:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Homerun Resources Inc. (HMR) - Original source: [tmx](https://money.tmx.com/en/quote/HMR/news/7065807395893479/homerun-resources-inc-and-uc-davis-produce-fused-silica-glass-from-sme-silica-sa) - Atlas sentiment: 0.4 - Atlas tags: Free Milling, Bench Scale Only Homerun Resources and UC Davis have successfully produced fused silica glass from the company's SME silica sand using a one-step Fast Joule Heating (FJH) process. The company has also filed a patent application for a femtosecond laser-based purification process that increases silica purity from 99.75% to over 99.99%. # 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.