# Mining News in Colorado Canonical page: https://atlas-extractions.minestarters.com/news?regions=usa_co Atlas summarizes and classifies mining-industry stories from third-party publishers. Follow each source link for the original reporting. Results: 49 Returned: 10 Coverage: drill results, resource updates, and metallurgy; primary commodity matching; all time unless dates are supplied. Region: Colorado (usa_co) Applied filters: {"regions":["usa_co"],"document_types":["drill_results","resource_update","metallurgy"],"document_type_match":"any"} Sort: published_at desc Offset: 0; page size: 10 [Next page](https://atlas-extractions.minestarters.com/news.md?regions=usa_co&page=2&page_size=10) ## Zephyr Provides Update & Announces Private Placement - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/zephyr-provides-update-announces-private-placement--940047a3-c622-488b-8a1c-bd2e38fa5cc3) · [Markdown](https://atlas-extractions.minestarters.com/news/zephyr-provides-update-announces-private-placement--940047a3-c622-488b-8a1c-bd2e38fa5cc3.md) - Original announcement: 2026-09-23T11:45:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Zephyr Minerals Ltd. (ZFR) - Original source: [orestocks](https://orestocks.com/company/ZFR.V/press-releases/7419893022517690) - Atlas sentiment: 0.065 - Atlas tags: Permitting Progress, Stale Estimate, Inferred Resource, Historical Estimate Only Zephyr Minerals announced a private placement of up to 4,000,000 units at $0.05 per unit to fund working capital and permitting for the Dawson Gold Project in Colorado. The company is also progressing environmental studies for a new mining permit application and appealing a rejection of prospecting orders in Zimbabwe. ## Viscount Reports 7.9 metres (26 ft) Grading 473.2 g/t Silver and 2.92 g/t Gold at Silver Cliff; Step-Out Drilling Confirms Silver Mineralization Beyond Current Kate Silver Resource Limits - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/viscount-reports-7-9-metres-26-ft-grading-473-2-g-t-silver-and-2-92-g-t-gold-at--992c9602-2ecd-405d-9ec7-6ea7fd4458c3) · [Markdown](https://atlas-extractions.minestarters.com/news/viscount-reports-7-9-metres-26-ft-grading-473-2-g-t-silver-and-2-92-g-t-gold-at--992c9602-2ecd-405d-9ec7-6ea7fd4458c3.md) - Original announcement: 2026-09-22T11:45:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Viscount Mining Corp. (VML.V) - Original source: [orestocks](https://orestocks.com/company/VML.V/press-releases/8293883933212068) - Atlas sentiment: 0.632 - Atlas tags: Bonanza Intercept, Apparent Width Only, QA/QC Disclosed, Cut-off Disclosed, Step-Out Extension, Deleterious Elements Present Viscount Mining Corp. announced high-grade silver and gold drill results from its Silver Cliff Project in Colorado, with step-out drilling confirming mineralization beyond the current Kate Silver Resource limits. Hole K26-08 returned a highlight intercept of 7.9 metres grading 473.2 g/t silver and 2.92 g/t gold, including 1.5 metres of 1,030 g/t silver. The company is using a 15 g/t silver cutoff for evaluation, which highlights broader mineralized zones, and plans a follow-up drill program. ## Quantumn Helium is leverage helium and oil opportunities in the United States - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/quantumn-helium-is-leverage-helium-and-oil-opportunities-in-the-united-states--d77b9846-5518-426c-9a71-282c6fff048c) · [Markdown](https://atlas-extractions.minestarters.com/news/quantumn-helium-is-leverage-helium-and-oil-opportunities-in-the-united-states--d77b9846-5518-426c-9a71-282c6fff048c.md) - Original announcement: 2026-09-22T07:30:53.912Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Quantum Helium Ltd (QHE) - Original source: [proactiveinvestors](https://www.proactiveinvestors.com/companies/news/213735/quantumn-helium-is-leverage-helium-and-oil-opportunities-in-the-united-states-213735.html) - Atlas sentiment: 0.267 - Atlas tags: Nearology Play Quantum Helium plans to commence a larger-scale fracture stimulation programme at its Sagebrush-1 well in Colorado during Q4 2026. This follows successful previous tests that confirmed helium-bearing gas at 2.5% and identified commercial oil in the Leadville Formation. ## Homeland Reports up to 1,820 ppm U from Surface Sampling at Cross Bones, Confirming Uranium Mineralization Across Multiple Targets - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/homeland-reports-up-to-1-820-ppm-u-from-surface-sampling-at-cross-bones-confirmi--f276ad78-a5d6-4b5a-a26f-481bab768038) · [Markdown](https://atlas-extractions.minestarters.com/news/homeland-reports-up-to-1-820-ppm-u-from-surface-sampling-at-cross-bones-confirmi--f276ad78-a5d6-4b5a-a26f-481bab768038.md) - Original announcement: 2026-07-30T11:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Homeland Uranium Corp. (HLU) - Original source: [tmx](https://money.tmx.com/en/quote/HLU/news/8153253555420319/homeland-reports-up-to-1-820-ppm-u-from-surface-sampling-at-cross-bones-confirmi) - Atlas sentiment: 0.559 - Atlas tags: None Homeland Uranium Corp. reported high-grade uranium results of up to 1,820 ppm U from a surface sampling program at its Cross Bones Uranium Project in Colorado, confirming mineralization across multiple targets, including a newly discovered East Ridge Showing. The company also received analytical results from 25 drill holes at its Coyote Basin Uranium Project, with most returning low uranium concentrations, except for one intercept of 1.52 m at 67 ppm U. These results strengthen drill targets for an upcoming maiden drill program at Cross Bones. ## Metallic Minerals' La Plata Project Selected for U.S. DOE Genesis Mission AI Research Initiative Award Funding - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/metallic-minerals-la-plata-project-selected-for-u-s-doe-genesis-mission-ai-resea--f62f5696-2b40-42c5-9e04-04488148704b) · [Markdown](https://atlas-extractions.minestarters.com/news/metallic-minerals-la-plata-project-selected-for-u-s-doe-genesis-mission-ai-resea--f62f5696-2b40-42c5-9e04-04488148704b.md) - Original announcement: 2026-07-27T11:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Metallic Minerals Corp. (MMG) - Original source: [tmx](https://money.tmx.com/en/quote/MMG/news/5212607410996764/metallic-minerals-la-plata-project-selected-for-u-s-doe-genesis-mission-ai-resea) - Atlas sentiment: 0.37 - Atlas tags: Inferred Resource, Maiden Resource Metallic Minerals' La Plata project has been selected as one of two initial test systems for the U.S. Department of Energy's Genesis Mission AI research initiative. The project, AGAPEX, aims to develop next-generation AI tools for critical minerals exploration using La Plata's extensive geological database. This collaboration provides the company with access to national-scale computing resources and validates the project's strategic importance. ## Newmont Exercises Participation Rights to Purchase Additional Shares of Metallic Minerals - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/newmont-exercises-participation-rights-to-purchase-additional-shares-of-metallic--9a12beea-0e81-405e-b650-7f6179980d8b) · [Markdown](https://atlas-extractions.minestarters.com/news/newmont-exercises-participation-rights-to-purchase-additional-shares-of-metallic--9a12beea-0e81-405e-b650-7f6179980d8b.md) - Original announcement: 2026-07-21T11:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Metallic Minerals Corp. (MMG) - Original source: [tmx](https://money.tmx.com/en/quote/MMG/news/6324034900433069/newmont-exercises-participation-rights-to-purchase-additional-shares-of-metallic) - Atlas sentiment: 0.378 - Atlas tags: Inferred Resource, NI 43-101 Compliant, QP/CP Signed Metallic Minerals Corp. has completed a $902,916 non-brokered private placement with Newmont Corporation to fund exploration at the La Plata project. The company also announced an updated 2026 NI 43-101 Mineral Resource Estimate for La Plata, which now includes platinum, palladium, and gold, expanding the Inferred resource to 181.4 Mt at 0.36% CuEq. ## Zephyr Provides Dawson Gold Update - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/zephyr-provides-dawson-gold-update--b95fe46f-0a6c-4362-bfd1-45a2693e5ac2) · [Markdown](https://atlas-extractions.minestarters.com/news/zephyr-provides-dawson-gold-update--b95fe46f-0a6c-4362-bfd1-45a2693e5ac2.md) - Original announcement: 2026-06-09T12:30:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Zephyr Minerals Ltd. (ZFR) - Original source: [tmx](https://money.tmx.com/en/quote/ZFR/news/7818686198769091/zephyr-provides-dawson-gold-update) - Atlas sentiment: 0.123 - Atlas tags: Stale Estimate, All Inferred, PEA Only, QP/CP Signed Zephyr Minerals reports the successful completion of the third quarter of its groundwater monitoring program at the Dawson Gold project in Colorado. The company plans to resubmit its mining permit application in January 2027. The release also restates a 2013 Inferred resource and a 2017 PEA, noting that current gold prices significantly enhance project attractiveness. ## Viscount Completes First Phase of 2026 Silver Cliff Drill Program and Identifies Important Geological Corridor Linking the Kate and Passiflora Areas - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/viscount-completes-first-phase-of-2026-silver-cliff-drill-program-and-identifies--2bac8b7c-f1d8-4acc-b155-37c72742ceba) · [Markdown](https://atlas-extractions.minestarters.com/news/viscount-completes-first-phase-of-2026-silver-cliff-drill-program-and-identifies--2bac8b7c-f1d8-4acc-b155-37c72742ceba.md) - Original announcement: 2026-06-03T11:45:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Viscount Mining Corp. (VML) - Original source: [tmx](https://money.tmx.com/en/quote/VML/news/8236429835738781/viscount-completes-first-phase-of-2026-silver-cliff-drill-program-and-identifies) - Atlas sentiment: 0.195 - Atlas tags: No QA/QC Disclosure, Nearology Play Viscount Mining Corp. has completed the first phase of its 2026 Silver Cliff drill program in Colorado. The drilling identified a geological corridor linking the Kate and Passiflora areas and observed increasing sulphide intensity, though all results are currently based on visual estimates pending assay confirmation. ## American Atomics Completes Mineral Resource Estimate for the Blue Streak Project - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/american-atomics-completes-mineral-resource-estimate-for-the-blue-streak-project--d447b7b9-2571-45e8-a801-4dce21747de3) · [Markdown](https://atlas-extractions.minestarters.com/news/american-atomics-completes-mineral-resource-estimate-for-the-blue-streak-project--d447b7b9-2571-45e8-a801-4dce21747de3.md) - Original announcement: 2026-06-01T13:04:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: American Atomics Inc. (NUKE) - Original source: [yahoo_press](https://finance.yahoo.com/markets/commodities/articles/american-atomics-completes-mineral-estimate-130400759.html) - Atlas sentiment: 0 - Atlas tags: Maiden Resource, No Contained Metal American Atomics Inc. has announced the completion of a Mineral Resource Estimate for its 100%-owned Blue Streak Project in Colorado, USA. However, the announcement does not provide specific resource statistics or the primary commodity. ## Homeland Identifies New Radiometric Surface Showing at the Cross Bones Uranium Project, Colorado - Atlas analysis: [Read analysis](https://atlas-extractions.minestarters.com/news/homeland-identifies-new-radiometric-surface-showing-at-the-cross-bones-uranium-p--7bc1b504-70b1-49de-a026-2ef53352d9d3) · [Markdown](https://atlas-extractions.minestarters.com/news/homeland-identifies-new-radiometric-surface-showing-at-the-cross-bones-uranium-p--7bc1b504-70b1-49de-a026-2ef53352d9d3.md) - Original announcement: 2026-06-01T11:00:00.000Z - Atlas analysis published: Unknown date - Atlas analysis updated: Unknown date - Company: Homeland Uranium Corp. (HLU) - Original source: [tmx](https://money.tmx.com/en/quote/HLU/news/6070624710005626/homeland-identifies-new-radiometric-surface-showing-at-the-cross-bones-uranium-p) - Atlas sentiment: 0.545 - Atlas tags: New Discovery, Previously Undocumented, QP/CP Signed, QA/QC Disclosed, Lab Certified, Radiometric Readings Only, No Assays Reported, Grab Samples, Surface Exploration, Multi-Domain Tested Homeland Uranium has completed a surface exploration program at its 100%-owned Cross Bones Uranium Project in Colorado, leading to the discovery of a new 500m long surface radiometric anomaly, named the East Ridge Showing. The program identified significant radioactivity, with sample readings up to 2200 cps, and has sent 67 samples for geochemical analysis. This new showing was previously undocumented and is considered highly encouraging for the project's exploration potential. # Atlas tag definitions - **Bonanza Intercept:** Exceptionally high-grade zone, well above the deposit-type norm. - **Metal Equivalent Opaque:** Metal equivalent grade reported without disclosing the price, recovery, or payability assumptions used. Requires an actual metal equivalent grade; a combined elemental basket such as PGE is not a metal equivalent. - **True Width Disclosed:** Actual thickness perpendicular to structure is stated, not just downhole length. - **Apparent Width Only:** Interval given as downhole width with no true width or drill orientation — apparent width may overstate true thickness. - **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. - **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. - **Cut-off Undisclosed:** Cut-off grade not disclosed — cannot assess comparability to prior estimates or peers. - **Step-Out Extension:** Mineralization extended beyond the previously known limit. - **Infill Drilling:** Confirmatory drilling to raise resource confidence, not new discovery. - **Stale Data Re-release:** Historical results re-announced with no new assays or reinterpretation — low genuine novelty. - **Deleterious Elements Present:** A source-stated penalty, refractory or recovery concern in the fact's scope. Element detection alone, including measured elements explicitly below penalty thresholds, does not trigger this tag. Respect negation and retain a separately stated concern even when another risk is explicitly absent. - **Refractory Ore:** Complex mineralogy requiring oxidation or other special processing before recovery. - **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. - **Inferred Resource:** Speculative category — limited drilling, geological continuity assumed but not confirmed. Cannot support economic studies alone. - **All Inferred:** M&I share below the weak bound — very early stage, no engineering confidence. - **Tonnage Growth:** Tonnage increase reaching the strong tier 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. - **Category Upgrade:** Resource confidence improved — Inferred upgraded to Indicated, or Indicated to Measured. De-risking signal. - **Tonnage Decline:** Resource tonnage decreased vs prior estimate — pit optimization removed marginal material or geological model revised down. - **Grade Decline:** Average grade fell below the red-flag bound vs prior estimate — deposit economics worsening. May indicate high-grading in early drilling. - **Contained Metal Decline:** Contained metal decreased vs prior despite tonnage growth — grade dilution exceeds volume gain. - **Category Downgrade:** Resource confidence decreased — Measured downgraded to Indicated, or Indicated to Inferred. Unusual and concerning. - **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 reduced beyond the suspicious bound 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. - **Stale Estimate:** Effective date is >2 years old — data currency concern, may not reflect current geological understanding. - **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. - **Historical Estimate Only:** Estimate pre-dates or does not comply with current JORC/NI 43-101 standards — requires verification drilling. - **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. No prior estimate exists, so every change band is not applicable. - **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. - **DFS Bankable:** AACE Class 2-1 study complete and within the staleness window. - **PFS Complete:** AACE Class 3 study complete. - **PEA Only:** Only Class 4 / Initial Assessment economics available. Not bankable. - **No Study:** No formal economic study — no engineering basis for the economics quoted. - **Stale Study:** Beyond the staleness window measured from the estimate base date. - **Inferred Heavy Feed:** Material Inferred share of LOM mill feed, or the share is undisclosed. - **Resource Governance Undisclosed:** No QA/QC, top-cut methodology or QP independence disclosed. Caps study quality at the moderate tier. - **NPV Cut vs Prior Study:** A restated study reduces NPV materially against its own predecessor on the same asset. - **High IRR:** Post-tax real unlevered IRR in the strong tier or better. - **Low IRR:** IRR below the moderate tier. - **Below Jurisdiction Hurdle:** IRR below the greenfield or brownfield hurdle for its jurisdiction tier. - **IRR Basis Undisclosed:** Real vs nominal not stated, so the tier is not comparable across studies. - **Undervalued PNAV:** Funding-adjusted P/NAV in the strong tier or better. - **Overvalued PNAV:** Funding-adjusted P/NAV in the red-flag tier. - **Fast Payback:** Payback in the strong tier or better, on the required basis. - **Slow Payback:** Payback in the weak tier or worse. - **Bottom Quartile Cost:** P0-25 of the relevant commodity cost curve. - **Top Quartile Cost:** P75-100 of the relevant commodity cost curve — first to cut in a downturn. - **Cost Basis Undisclosed:** By-product vs co-product not stated, so quartile placement is unreliable. - **Low Capital Intensity:** Below the benchmark for its project type. - **High Capital Intensity:** Above the benchmark for its project type. - **Conservative Pricing:** Conservative on the worst of the spot, 3-year and consensus comparisons. - **Aggressive Pricing:** The study only works on a stretched price deck. - **No Price Sensitivity:** No price sensitivity disclosed — treated as a deliberate signal, not a neutral gap. - **No Discount Rate Sensitivity:** Blocks NPV normalisation to the common rate without reconstruction. - **Price Deck Unstructured:** Prices given only as free text, so conservatism cannot be scored. - **Long Reserve Life:** Reserve life index in the top tier of the single ladder. - **Short Reserve Life:** Reserve life index in the critical tier. - **Resource Life Upside:** Wide gap between reserve life and resource life — conversion upside rather than discovery dependence. - **Fully Funded:** Funding coverage at or above 1.0x counting committed facilities only. - **Material Funding Gap:** Funding coverage below the substantially-funded band. - **Funding Gap Exceeds Market Cap:** Red flag regardless of headline NPV — the upside is not reachable by the current equity holder. - **Encumbered by Stream:** An existing stream or royalty reduces attributable NAV and restricts future financing. - **Stability Agreement:** Fiscal terms fixed, with a term covering the mine life. - **High Government Take:** Total government take above the regional norm as a share of pre-tax cash flow. - **Fully Permitted:** Key permits granted with no unresolved challenge. - **Permit Challenge Outstanding:** An appeal or legal challenge is unresolved, which can defer first production indefinitely. - **No Community Agreement:** Permits held but no IBA or benefit agreement — the start date is unsupported. - **Closure Underprovisioned:** Closure provision materially below peers, unfunded, or undisclosed. - **Upstream TSF:** Upstream tailings construction, which is banned in Brazil and Ecuador.