WEBINAR | Up to 40% Faster Automated TEM Lamella Preparation with new Ga⁺ FIB Column

Automated Mineralogy for Lithium Ore Characterization with Tescan TIMA

Tescan TIMA delivers detailed textural and compositional data from lithium bearing minerals — like spodumene and lepidolite — supporting efficient beneficiation and trace element analysis in lithium-bearing pegmatites.

hero
hero
Unlocked content

Upstream Battery Materials Require Precise, Mineral-Specific Insight

As global demand for lithium surges, efficient extraction from ore becomes increasingly important. But direct detection of lithium in its host minerals — especially micas — remains challenging. This study showcases how Tescan TIMA enables high-resolution, automated mineralogy of lithium pegmatites.

By mapping mineral phases, grain sizes, and associations in samples containing spodumene and lepidolite, TIMA provides the data needed for better resource modeling, liberation prediction, and trace metal recovery. The result: a clearer understanding of which minerals matter — and how to extract them most effectively.

Why Study Lithium Ores

with Tescan TIMA

01
Root of the Problem

Why Lithium Ores Are Hard to Quantify and Even Harder to Process

Unlike more familiar base metal ores, lithium-bearing minerals don’t always stand out under traditional analytical methods. Spodumene may be visible with XRD, but its texture and association with gangue minerals remain hidden. Lepidolite — a lithium-bearing mica — is even more difficult to quantify due to its spectral similarity to muscovite and other non-lithium phases.

As a result, estimating lithium grades and beneficiation potential often requires multiple techniques. What’s missing is a single workflow that covers texture, liberation, and mineral composition across size fractions — without relying on destructive prep or indirect bulk averages.

02
Materials and Methods

Particle-Based Mapping with TIMA and LA-ICP-MS

Four size fractions of lithium–cesium–tantalum (LCT) pegmatite ore were embedded in epoxy and analyzed with Tescan TIMA. Samples were mapped using automated EDS-based mineral identification, assigning pixels to phases like spodumene, lepidolite, albite, quartz, feldspar, and micas.

Additionally, TIMA mineral maps were used to guide LA-ICP-MS spot analyses for lithium, rubidium, and cesium concentrations. Combined, the datasets enabled quantification of lithium deportment across multiple host minerals, verification of TIMA outputs via wet chemistry, and classification of particles by liberation status — including locked, middling, and fully liberated categories.

03
Results and Discussion

Modal Mineralogy, Lithium Deportment, and Liberation Curves

TIMA analysis showed spodumene as the primary lithium carrier (88.1% of total Li), followed by lepidolite (11.4%) and trace contributions from triphylite (<0.5%). Quartz, albite, and feldspar were present as gangue minerals, while cassiterite and tantalite-(Mn) appeared as economically relevant accessories.

Liberation analysis revealed that spodumene was well-liberated in most size fractions, but fine intergrowths with quartz in smaller particles reduced expected recovery. Lepidolite was often coarsely liberated, making it suitable for secondary product flows. Grade-recovery curves from TIMA confirmed that spodumene-dominant material could achieve high purity at acceptable recoveries — data critical for process simulation and plant design.

GET IN Touch

Contact us

Get the most out of Tescan

This is more than information; it's an advantage. We've compiled our technical whitepapers, detailed product flyers, and on-demand webinars to provide you with the knowledge that makes a real difference. Sign up now to access the insights you need to make an impact.

Tescan Instruments & Technology

Used in This Workflow

Tescan TIMA

TESCAN TIMA combines compositional and textural analysis to support both exploration and beneficiation planning, making it a key tool in lithium resource evaluation.

  •  Maps mineral composition, particle associations, and liberation

  • Identifies lithium carriers via proxy elements when Li is below EDS detection

  • Suitable for spodumene, lepidolite, and rare-metal pegmatite characterization 
TIMA GM

GET IN Touch

Contact us

map

Where can you find us: 

Tescan Brno
Libušina třída 21
623 00 Brno
Czech Republic

info@Tescan.com