# Caesium Mining News Canonical page: https://atlas-staging.minestarters.com/news?commodities=caesium Atlas summarizes and classifies mining-industry stories from third-party publishers. Follow each source link for the original reporting. Results: 8 Returned: 8 Coverage: drill results, resource updates, and metallurgy; primary commodity matching; all time unless dates are supplied. Commodity: Caesium (caesium) Applied filters: {"commodities":["caesium"],"commodity_scope":"primary","document_types":["drill_results","resource_update","metallurgy"],"document_type_match":"any"} Sort: published_at desc Offset: 0; page size: 10 ## PMET Successfully Completes Phase 2 Caesium Testwork Program with Koch Technology Solutions - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/pmet-successfully-completes-phase-2-caesium-testwork-program-with-koch-technolog--58a6c87a-b0a8-4606-a990-cd1a03eaf47b) · [Markdown](https://atlas-staging.minestarters.com/news/pmet-successfully-completes-phase-2-caesium-testwork-program-with-koch-technolog--58a6c87a-b0a8-4606-a990-cd1a03eaf47b.md) - Original announcement: 2026-09-22T21:15:40.976Z - Atlas analysis published: 2026-09-22T21:17:06.519Z - Atlas analysis updated: 2026-09-22T21:17:06.519Z - Company: PMET Resources Inc. (PMET) - Original source: [cnw](https://www.newswire.ca/news-releases/pmet-successfully-completes-phase-2-caesium-testwork-program-with-koch-technology-solutions-869469809.html) - Atlas sentiment: 0.493 - Atlas tags: High Recovery, Bench Scale Only, Mill Route, Gravity Route, Single Domain Only PMET Resources has successfully completed Phase 2 bench-scale caesium testwork in partnership with Koch Technology Solutions. The program demonstrated a highly selective processing pathway capable of producing multiple high-purity caesium products from pollucite concentrate, potentially lowering recovery costs. ## PMET Successfully Completes Phase 2 Caesium Testwork Program with Koch Technology Solutions - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/pmet-successfully-completes-phase-2-caesium-testwork-program-with-koch-technolog--eb2723c2-b106-42bc-826c-d815d93d150c) · [Markdown](https://atlas-staging.minestarters.com/news/pmet-successfully-completes-phase-2-caesium-testwork-program-with-koch-technolog--eb2723c2-b106-42bc-826c-d815d93d150c.md) - Original announcement: 2026-09-22T21:00:00.000Z - Atlas analysis published: 2026-09-22T21:32:55.792Z - Atlas analysis updated: 2026-09-22T21:32:55.792Z - Company: PMET Resources Inc. (PMET.TO) - Original source: [orestocks](https://orestocks.com/company/PMET.TO/press-releases/5531915401022020) - Atlas sentiment: 0.409 - Atlas tags: Mill Route, Bench Scale Only, Gravity Route, Single Domain Only PMET has successfully completed Phase 2 bench-scale caesium testwork in partnership with Koch Technology Solutions. The program demonstrated a selective processing pathway to produce various high-purity caesium products from pollucite concentrate, potentially lowering recovery costs. ## 17:00 ET PMET Conducts Large Scale Caesium Sampling Program at CV13 September 9, 2026 – Sydney, Australia Highlights More than 2.5 tonnes of pollucite pegmatite collected to date from outcrop at the Vega Zone (CV13).... - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/17-00-et-pmet-conducts-large-scale-caesium-sampling-program-at-cv13-september-9--29cf8b13-0267-4d82-a8fb-dcf4ce7da6f6) · [Markdown](https://atlas-staging.minestarters.com/news/17-00-et-pmet-conducts-large-scale-caesium-sampling-program-at-cv13-september-9--29cf8b13-0267-4d82-a8fb-dcf4ce7da6f6.md) - Original announcement: 2026-09-08T21:45:44.657Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: PMET Resources Inc. (PMET) - Original source: [cnw](https://www.newswire.ca/news-releases/pmet-conducts-large-scale-caesium-sampling-program-at-cv13-870476364.html) - Atlas sentiment: 0.343 - Atlas tags: QA/QC Disclosed, Mill Route, Gravity Route PMET Resources has collected over 2.5 tonnes of pollucite pegmatite samples from the Vega Zone at the CV13 Pegmatite using a large-diameter shallow coring method. These bulk samples are intended to support ore sorting and downstream caesium chemical testwork, with results expected in early 2027. ## PMET Conducts Large Scale Caesium Sampling Program at CV13 - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/pmet-conducts-large-scale-caesium-sampling-program-at-cv13--6aa19c09-cf26-4bc3-b23e-9b7182819fca) · [Markdown](https://atlas-staging.minestarters.com/news/pmet-conducts-large-scale-caesium-sampling-program-at-cv13--6aa19c09-cf26-4bc3-b23e-9b7182819fca.md) - Original announcement: 2026-09-08T21:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: PMET Resources Inc. (PMET.TO) - Original source: [orestocks](https://orestocks.com/company/PMET.TO/press-releases/7647118287997851) - Atlas sentiment: 0.234 - Atlas tags: QA/QC Disclosed, Resource Update, Mill Route, Gravity Route, Multi-Domain Tested PMET is conducting a large-scale 'BerryPick' sampling program at the CV13 Vega Zone using large-diameter (~30 cm) drill core to collect bulk pollucite pegmatite samples. The collected material, exceeding 2.5 tonnes to date, is intended to support ore sorting and downstream caesium chemical testwork scheduled for Q4 2026. ## PMET Demonstrates >97% Caesium Extraction from Pollucite Concentrate - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/pmet-demonstrates-97-caesium-extraction-from-pollucite-concentrate--c00d0474-1e53-4530-afb2-abba8f664fb0) · [Markdown](https://atlas-staging.minestarters.com/news/pmet-demonstrates-97-caesium-extraction-from-pollucite-concentrate--c00d0474-1e53-4530-afb2-abba8f664fb0.md) - Original announcement: 2026-07-12T22:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: PMET (PMT) - Original source: [yahoo_press](https://finance.yahoo.com/markets/commodities/articles/pmet-demonstrates-97-caesium-extraction-220000456.html) - Atlas sentiment: 0.63 - Atlas tags: High Recovery PMET has demonstrated highly successful metallurgical testing, achieving over 97% extraction of caesium from its pollucite concentrate. This result validates the processing efficiency for the company's primary commodity. ## Widest and Highest-Grade Caesium Intercepts to Date at Vega including 28.0 m at 8.05% Cs2O and 2.2 m at 26.48% Cs2O - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/widest-and-highest-grade-caesium-intercepts-to-date-at-vega-including-28-0-m-at--2626efd9-bb20-43d1-acac-1c1e03493cad) · [Markdown](https://atlas-staging.minestarters.com/news/widest-and-highest-grade-caesium-intercepts-to-date-at-vega-including-28-0-m-at--2626efd9-bb20-43d1-acac-1c1e03493cad.md) - Original announcement: 2026-02-03T22:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Unknown company (PMT) - Original source: [yahoo_press](https://finance.yahoo.com/news/widest-highest-grade-caesium-intercepts-220000945.html) - Atlas sentiment: 0.903 - Atlas tags: Bonanza Intercept The company has reported its widest and highest-grade caesium intercepts to date at the Vega project. Notable results include a 28.0 m intercept at 8.05% Cs2O and a high-grade 2.2 m intercept at 26.48% Cs2O. ## Comet Lithium Expands Discovery Work at Elmer East, Confirming a Continuous Caesium Pegmatite Over More Than 200 Metres - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/comet-lithium-expands-discovery-work-at-elmer-east-confirming-a-continuous-caesi--a61da8c3-9eb3-450a-8250-8b6455370f2e) · [Markdown](https://atlas-staging.minestarters.com/news/comet-lithium-expands-discovery-work-at-elmer-east-confirming-a-continuous-caesi--a61da8c3-9eb3-450a-8250-8b6455370f2e.md) - Original announcement: 2025-12-04T12:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Comet Lithium Corporation (CLIC) - Original source: [tmx](https://money.tmx.com/en/quote/CLIC/news/8424903888406604/comet-lithium-expands-discovery-work-at-elmer-east-confirming-a-continuous-caesi) - Atlas sentiment: 0.567 - Atlas tags: QA/QC Disclosed, Step-Out Extension Comet Lithium has confirmed a continuous caesium-rich LCT pegmatite system extending over 200 metres at the Elmer East Project in Québec. Channel sampling returned high-grade intercepts of caesium, lithium, and tantalum, with several intervals exceeding 4% Cs2O. ## High Recovery Caesium Concentrate Produced from Latest Metallurgical Testwork at Shaakichiuwaanaan - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/high-recovery-caesium-concentrate-produced-from-latest-metallurgical-testwork-at--6710749f-e15d-4ed5-8327-dceadfa13e71) · [Markdown](https://atlas-staging.minestarters.com/news/high-recovery-caesium-concentrate-produced-from-latest-metallurgical-testwork-at--6710749f-e15d-4ed5-8327-dceadfa13e71.md) - Original announcement: 2025-10-08T22:23:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: PMET Resources Inc. (PMT) - Original source: [yahoo_press](https://finance.yahoo.com/news/high-recovery-caesium-concentrate-produced-222300188.html) - Atlas sentiment: 0 - Atlas tags: Bench Scale Only The announcement reports high recovery caesium concentrate produced from recent metallurgical testwork at the Shaakichiuwaanaan project. However, the provided text contains no specific numeric values for recovery, grades, or test parameters. # 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.