Lab Technician

Mariana Minerals
United States
Workplace: OnsiteFull timeFunction: Laboratory & Clinical OperationsSkills: ["Communication","Collaboration","Safety focus","Accuracy","Operational excellence"]

Support process development studies and analytical testing by building, operating, and maintaining ore leaching columns in close collaboration with R&D and engineering. Drive ore handling from crushing and size sorting to representative sampling, prepare samples using digestion/dilution/filtration, and run chemical analyses (e.g., ICP, NMR, XRF, titrations). Document results in lab information systems and maintain rigorous EHS records for reliable scale-up.

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Mariana Minerals
Mariana Minerals
18 hours ago

Lab Technician

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Last checked: 3 hours agoStatus: Live

Job Summary

Support process development studies and analytical testing by building, operating, and maintaining ore leaching columns in close collaboration with R&D and engineering. Drive ore handling from crushing and size sorting to representative sampling, prepare samples using digestion/dilution/filtration, and run chemical analyses (e.g., ICP, NMR, XRF, titrations). Document results in lab information systems and maintain rigorous EHS records for reliable scale-up.
Location: United States
Workplace: Onsite
Employment Type: Full time
Job Function: Laboratory & Clinical Operations

Key Responsibilities

  • •Drive ore handling including crushing, particle size sorting, and collecting representative samples for analysis.
  • •Prepare samples using techniques such as digestion, dilution, and/or filtration.
  • •Perform elemental and compositional analysis of solid and liquid samples using methods including ICP, NMR, XRF, titration, or similar equipment.
  • •Document analytical results in laboratory information systems and maintain clear experimental records and material metrics using digital tools.
  • •Follow strict environmental, health, and safety protocols while supporting process development work with R&D and engineering.

Key Requirements

  • •Experience working in minerals processing, metallurgy, chemicals, specialty materials, or similar industrial environments.
  • •Familiarity with chemical processing equipment (e.g., pumps, columns, instrumentation) and/or crushing equipment (e.g., crushers, grinders, conveyors, sorters).
  • •Ability to read and follow SOPs, equipment manuals, and safety guidelines.
  • •Mechanical aptitude to perform basic fabrication and troubleshooting.
  • •Hands-on experience operating analytical equipment and the ability to collaborate with teams while meeting safety and accuracy expectations.
Experience:Minerals processingMetallurgyChemicalsIndustrial environments
Skills:CommunicationCollaborationSafety focusAccuracyOperational excellence
Tech Stack:Ore leaching columnsDigestionDilutionFiltrationICPNMRXRFTitratorLaboratory information systemsSOPsCrushersGrindersConveyorsSortersPumpsColumnsInstrumentation

Company Brief

Mariana Minerals
Software-first, vertically integrated minerals company developing extraction, processing, and automation systems to supply critical minerals (lithium and others) for energy, AI, and defense technologies, and building commercial-scale lithium facilities from produced water.
Industry: Mining & Metals
Company Size: Small (11 to 50 employees)
Growth: Early Stage Startup
Funding: Series A
Headquarters: San Francisco, United States
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