# Cesium Mining News in Quebec Canonical page: https://atlas-staging.minestarters.com/news?commodities=cesium®ions=canada_qc Atlas summarizes and classifies mining-industry stories from third-party publishers. Follow each source link for the original reporting. Results: 4 Returned: 4 Coverage: drill results, resource updates, and metallurgy; primary commodity matching; all time unless dates are supplied. Region: Quebec (canada_qc) Commodity: Cesium (cesium) Applied filters: {"regions":["canada_qc"],"commodities":["cesium"],"commodity_scope":"primary","document_types":["drill_results","resource_update","metallurgy"],"document_type_match":"any"} Sort: published_at desc Offset: 0; page size: 10 ## Ophir to Drill High-Grade Cesium Discovery at the Pilipas Property, James Bay, Quebec - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/ophir-to-drill-high-grade-cesium-discovery-at-the-pilipas-property-james-bay-que--f63eaf2c-a4e7-4e09-b1e7-a3cc9531e231) · [Markdown](https://atlas-staging.minestarters.com/news/ophir-to-drill-high-grade-cesium-discovery-at-the-pilipas-property-james-bay-que--f63eaf2c-a4e7-4e09-b1e7-a3cc9531e231.md) - Original announcement: 2025-05-21T10:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Ophir Metals Corp. (OPHR) - Original source: [tmx](https://money.tmx.com/en/quote/OPHR/news/7664097292757962/ophir-to-drill-high-grade-cesium-discovery-at-the-pilipas-property-james-bay-que) - Atlas sentiment: 0.462 - Atlas tags: QA/QC Disclosed, Bonanza Intercept Ophir Metals Corp. is planning a 1,000m drill program at the Pilipas Property in Quebec to test a high-grade cesium discovery at the HW3 Pegmatite. Recent channel and grab sampling confirmed high-grade cesium oxide (Cs2O) intercepts, including up to 12.40% Cs2O. ## Ophir Channel Sample Results Confirm High Grade Cesium Mineralization at HW3 Pegmatite at the Pilipas Property, James Bay, Quebec - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/ophir-channel-sample-results-confirm-high-grade-cesium-mineralization-at-hw3-peg--28fac7ce-e070-4a8b-a2a0-7d41e52c5e14) · [Markdown](https://atlas-staging.minestarters.com/news/ophir-channel-sample-results-confirm-high-grade-cesium-mineralization-at-hw3-peg--28fac7ce-e070-4a8b-a2a0-7d41e52c5e14.md) - Original announcement: 2025-02-03T12:15:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Ophir Metals Corp. (OPHR) - Original source: [tmx](https://money.tmx.com/en/quote/OPHR/news/6567276451643720/ophir-channel-sample-results-confirm-high-grade-cesium-mineralization-at-hw3-peg) - Atlas sentiment: 0.493 - Atlas tags: None Ophir Metals Corp. has reported high-grade cesium oxide results from a channel sampling program at the HW3 Pegmatite within the Pilipas Property in Quebec. The results include an intercept of 12.40% Cs2O and confirm the expansion of the cesium-enriched zone. ## Vision Lithium Reports High-Grade Cesium Discovery up to 1.94% Cs2O at Sirmac Property - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/vision-lithium-reports-high-grade-cesium-discovery-up-to-1-94-cs2o-at-sirmac-pro--bd4a876f-f390-47d9-8a35-2ba91d46c600) · [Markdown](https://atlas-staging.minestarters.com/news/vision-lithium-reports-high-grade-cesium-discovery-up-to-1-94-cs2o-at-sirmac-pro--bd4a876f-f390-47d9-8a35-2ba91d46c600.md) - Original announcement: 2024-12-02T12:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Vision Lithium Inc. (VLI) - Original source: [tmx](https://money.tmx.com/en/quote/VLI/news/7173743336201130/vision-lithium-reports-high-grade-cesium-discovery-up-to-1-94-cs2o-at-sirmac-pro) - Atlas sentiment: 0.483 - Atlas tags: QA/QC Disclosed, Bonanza Intercept Vision Lithium has reported a high-grade cesium discovery at its Sirmac property in Québec, with grab samples yielding up to 1.94% Cs2O. The new pegmatite dikes also show anomalous lithium, tantalum, and rubidium, suggesting a highly fractionated LCT pegmatite system. ## Ophir Mobilizes Crew for Cesium Channel Sampling Program on HW3 Pegmatite at Pilipas Property, James Bay, Quebec - Atlas analysis: [Read analysis](https://atlas-staging.minestarters.com/news/ophir-mobilizes-crew-for-cesium-channel-sampling-program-on-hw3-pegmatite-at-pil--6b78edfd-8a83-4ad2-bf6f-8119f88568a0) · [Markdown](https://atlas-staging.minestarters.com/news/ophir-mobilizes-crew-for-cesium-channel-sampling-program-on-hw3-pegmatite-at-pil--6b78edfd-8a83-4ad2-bf6f-8119f88568a0.md) - Original announcement: 2024-11-28T12:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Ophir Metals Corp. (OPHR) - Original source: [tmx](https://money.tmx.com/en/quote/OPHR/news/8969385872998952/ophir-mobilizes-crew-for-cesium-channel-sampling-program-on-hw3-pegmatite-at-pil) - Atlas sentiment: 0.335 - Atlas tags: QA/QC Disclosed, Step-Out Extension Ophir Metals Corp. has mobilized crews for a channel sampling program at the HW3 Pegmatite within its Pilipas Lithium Property in Quebec. This follows the discovery of high-grade cesium oxide (14.2%) and lithium oxide (0.71%) from a surface grab sample. # 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.