Additional Critical Mineral Potential Confirmed with 95.9% Cesium and 86.9% Rubidium Extraction at Bonnie Claire Lithium Project
Original announcement by tmx on
- Company
- Nevada Lithium Resources Inc.
- Ticker
- NVLH
- Exchange
- TSX
- Region
- Nevada
- Primary commodity
- Lithium
- Secondary commodities
- Cesium, Rubidium, Boron
- Document categories
- Metallurgy
- Extracted
- 2026-09-16 15:01:13 UTC
Analysis by Minestarters Atlas
Minestarters Atlas analysis
Summary
Nevada Lithium Resources Inc. has confirmed high extraction rates for cesium (95.9%) and rubidium (86.9%) from its Bonnie Claire Lithium Project using existing metallurgical flowsheet conditions. The company also successfully completed proof-of-concept ion exchange tests for these critical minerals and is evaluating further optimization and rare earth element recovery potential.
Reasoning: The metallurgical results demonstrate significant value-add potential by confirming high recovery of cesium and rubidium using the existing lithium processing baseline.
Positive factors
- High extraction rates for critical minerals (Cs and Rb)
- Successful proof-of-concept for ion exchange recovery
- Confirmation that Cs and Rb are leachable under existing lithium flowsheet conditions
Facts used in scoring: 3
Classification and evidence
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: Cesium recovery of 95.9% is exceptional for the context of adding critical minerals to a lithium flowsheet.
Evidence · text
“achieved extractions of up to 95.9% for Cs and 86.9% for Rb”
QA/QC Disclosedpositive · Story-specific tag
Release includes QA/QC disclosure — certified lab, QP sign-off, or stated methods (blanks, standards, duplicates).
Why it applies: The release mentions internal standards, blanks, and duplicates used by the laboratory.
Evidence · text
“Quality assurance and quality control measures applied by the Laboratory include internal standards, blanks and duplicates”
Mill Routeneutral
Processing via mill or concentrator (CIL, CIP, tank leach, flotation).
Why it applies: The process involves acid leaching and ion exchange, consistent with a mill/concentrator flowsheet.
Evidence · text
“The current flowsheet confirmed; Cs and Rb are leachable from the lithium clay ore under the existing baseline conditions”
Single Domain Onlynegative
Testing limited to one composite or domain — representativeness not established.
Why it applies: only one composite was tested
Extracted facts
Stored fact records: 3. Some facts used in scoring do not have a stored record.
Metallurgical Results (3)
acid leachBonnie Claire Lithium Project · cesiumRecovery: 95.9 %Head Grade: 226Head Grade Unit: mg/kgView all detailsHide details
Identity
- Project
- Bonnie Claire Lithium Project
- Commodity
- cesium
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- NVLH
Test Work
- Program Status
- detailed
- Test Type
- acid leach
- Sample
- high-grade composite sample
- Leach Time
- 4 hours
Recovery
- Recovery
- 95.9 %
- Recovery Basis
- actual_test
- Head Grade
- 226
- Head Grade Unit
- mg/kg
Reagents
- Acid
- 700 kg/t
Lab
- Laboratory
- Kemetco Research Inc.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-25T00:00:00.000Z
Reasoning: 95.9% recovery of cesium is a strong technical result for a byproduct mineral.
Positive factors
- Very high recovery rate
Evidence · text
“achieved extractions of up to 95.9% for Cs”
Tags used in scoring
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
acid leachBonnie Claire Lithium Project · rubidiumRecovery: 86.9 %Head Grade: 297Head Grade Unit: mg/kgView all detailsHide details
Identity
- Project
- Bonnie Claire Lithium Project
- Commodity
- rubidium
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- NVLH
Test Work
- Program Status
- detailed
- Test Type
- acid leach
- Sample
- high-grade composite sample
- Leach Time
- 4 hours
Recovery
- Recovery
- 86.9 %
- Recovery Basis
- actual_test
- Head Grade
- 297
- Head Grade Unit
- mg/kg
Reagents
- Acid
- 700 kg/t
Lab
- Laboratory
- Kemetco Research Inc.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-25T00:00:00.000Z
Reasoning: 86.9% recovery of rubidium confirms its viability as a byproduct.
Positive factors
- Strong recovery rate
Evidence · text
“achieved extractions of up to 95.9% for Cs and 86.9% for Rb”
Tags used in scoring
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
acid leachBonnie Claire Lithium Project · lithiumRecovery: 98 %Head Grade: 5055Head Grade Unit: mg/kgView all detailsHide details
Identity
- Project
- Bonnie Claire Lithium Project
- Commodity
- lithium
- Region
- usa_nv
- Reported Region
- Nevada
- Ticker
- NVLH
Test Work
- Program Status
- detailed
- Test Type
- acid leach
- Sample
- high-grade composite sample
- Leach Time
- 4 hours
Recovery
- Recovery
- 98 %
- Recovery Basis
- actual_test
- Head Grade
- 5055
- Head Grade Unit
- mg/kg
Reagents
- Acid
- 700 kg/t
Lab
- Laboratory
- Kemetco Research Inc.
Review
- Needs Review
- No
- Historical
- No
Dates
- Event date
- 2026-03-25T00:00:00.000Z
Reasoning: Lithium recovery is consistent with previously reported high levels.
Positive factors
- Consistent with previous results
Evidence · text
“comparable to 98% Lithium (Li) and 97% Boron (B) extraction obtained previously”
Tags used in scoring
High Recoverypositive
Recovery at or above the exceptional band for the commodity and processing route.
Why it applies: 98% is at or above the exceptional band (80%)
Byproduct Commodityneutral
The tested commodity is a byproduct rather than the primary economic driver.
Why it applies: the release describes a byproduct credit
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.