Andromeda Metals (ASX:ADN): Great White Alumina Testing Reaches Customer Sampling

Aditi Sarkar

29 October 2026 05:11 PM AEDT

Andromeda Metals (ASX:ADN): Great White Alumina Testing Reaches Customer Sampling

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Highlights

A continuous pilot plant produced high purity alumina from Great White kaolin.
Company-reported testing reached up to 99.9989% purity across three samples.
A first sample was sent to a potential high-technology customer in Japan.
Further product sampling and preparation for a pre-feasibility study remain under way.

Andromeda Metals Limited (ASX:ADN) develops mineral products based on kaolin from its Great White project. Its October 2026 update reported pilot-scale production of high purity alumina and the dispatch of a first sample to a potential Japanese customer, placing technical validation and customer qualification at the forefront of the project’s next stage.

Pilot Results and Their Limits

On 29 October 2026, Andromeda Metals (ASX:ADN) reported that its continuous pilot plant had produced 4N+ high purity alumina, a designation indicating purity above 99.99% Al2O3. Analysis of three samples using glow discharge mass spectrometry produced a company-reported headline result of up to 99.9989%. A separate treatment of analytical reporting limits indicated purity up to 99.9966%. The two approaches use different assumptions, and neither represents a commercial production result.

Why Laboratory Detail Matters

The testing also identified metallic impurities as low as 10.84 parts per million. The source announcement and underlying certificates contain slightly different values for individual samples, so Andromeda Metals (ASX:ADN) should be assessed on the broader finding of pilot-scale 4N+ material rather than a disputed sample-level decimal. Only three samples formed the reported analytical set. Further testing remains necessary to establish consistency across sustained processing runs and larger volumes of material.

First Japanese Sample Moves into Evaluation

Andromeda Metals (ASX:ADN) said it sent its first commercial sample to a potential customer in Japan's high-technology manufacturing sector. A sample shipment allows product evaluation, but it does not establish customer acceptance, a contracted sales volume or recurring revenue. Qualification work is continuing, and the October announcement did not report an executed offtake or sales contract. That distinction is particularly important because product specifications for advanced manufacturing can involve several tests before any procurement decision.

Process Development and Product Forms

The company identified amorphous high purity alumina and crystalline alpha-high purity alumina as products for further sampling. It did not specify which product form was delivered in the first Japanese shipment. Andromeda Metals (ASX:ADN) also reported a patent granted on 6 October 2026 for its proprietary process. Intellectual-property protection and technical performance are separate matters: a patent does not demonstrate that a proposed production plant can operate economically at scale. Continued optimisation of the pilot plant and semi-continuous end-to-end validation are among the announced technical activities.

Commercial Planning and Further Studies

A strategic supply heads of agreement announced in 2026 outlines a potential route into the United States market but is not equivalent to a binding long-term supply contract. The company plans additional sampling during the fourth quarter of 2026, including amorphous and crystalline product forms. Planning for a pre-feasibility study is under way. Andromeda Metals (ASX:ADN) is also assessing amorphous silica generated during processing as a possible co-product. Neither the potential commercial value of that material nor full-scale processing economics were established in the October update.

Remaining Execution Questions

The principal distinctions are between measured purity, customer acceptance and commercial production. Pilot results support continued technical work but do not show industrial output rates, sustainable manufacturing costs or contracted sales. The company has not disclosed final financing arrangements for a commercial alumina plant in the October announcement. Subsequent qualification, engineering and study results are therefore needed to establish the technical and commercial pathway.

Key Insights

Andromeda Metals (ASX:ADN) has demonstrated high purity alumina production from Great White kaolin at pilot scale and initiated direct customer evaluation. The reported purity figures are technical measurements rather than revenue or production guidance. Further testing and commercial agreements remain separate milestones.

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