Questions About Our Minerals, Certifications & Supply

We supply micronised feldspar (Microbrite® and Microbrite®(S)), high-purity silica (Microsil®), industrial and pharmaceutical talc (MicroTalc® and Pharmatalc®), barytes (Microblanc®), mica, pyrophyllite (Supersilk®) and screened feldspar aggregates — nine product lines across 25 grades.

Ceramics and porcelain, paints and coatings, plastics and rubber, glass manufacturing, pharmaceutical, personal care and cosmetics, and construction and adhesives. See our full applications overview.

Grade selection depends on particle size distribution, chemistry and the specific performance requirement of your formulation. Our UK-based technical team supports grade selection directly — send us your current specification and we'll recommend the closest match from our range.

Yes. Substitution trial support is one of our core services. We compare the chemistry and particle size of your current material against our grades to identify the closest equivalent and support you through the trial process.

Yes. The talc raw material used for all MicroTalc® and Pharmatalc® grades is tested for asbestos quarterly (every three months) by an independent laboratory (polarised light microscopy, UK HSE HSG248 method), with no asbestos detected. Current test certificates are available on request.

Yes. Our minerals are naturally occurring and processed by mechanical means only, and have been assessed as exempt from UK REACH registration under Annex V. Safety Data Sheets and REACH statements are supplied on request.

Pharmatalc® is supplied for use in pharmaceutical manufacture. It is irradiated in accordance with EN ISO 11137-1 by a sterilisation facility certified to EN ISO 13485, with a certificate of irradiation supplied for every batch. The talc raw material is tested quarterly by an independent laboratory for asbestos (NIL detected) and heavy metals. Please share your pharmacopoeial or monograph requirements so we can confirm suitability against the batch documentation.

Yes. The talc raw material used for all MicroTalc® and Pharmatalc® grades is screened for heavy metals quarterly (every three months) by an independent laboratory using ICP analysis. In the most recent report (March 2026), arsenic, cadmium and mercury were all below the laboratory's quantitation limit of approximately 25 mg/kg. The full test certificate is available on request.

Technical Data Sheets (TDS), Safety Data Sheets (SDS) and Certificates of Analysis (CoA) are available for every product and grade, along with asbestos and heavy metals test certificates for our talc grades.

Submit a request through our Technical Documentation page and our technical team will send the documents directly to your email.

Yes. It covers company information, quality policy, supply chain overview and certifications, and is available on request via our contact page.

Yes — we offer a sample service for trade enquiries and formulation trials. Request one through our contact page.

Lead times depend on the grade, order volume and delivery destination. Contact our technical team for an estimate specific to your order.

Order quantities are discussed individually based on grade and packaging format — contact our team to talk through volumes suited to your production needs.

Products are packaged in recyclable paper bags or reusable bulk bags, labelled with batch reference, grade and CoA number.

Our UK-based technical team aims to respond to all enquiries within one business day.

Our feldspar, silica and mica are mined and processed at our South African partner's Limpopo Province operations. Talc and barytes are sourced from long-standing supply partners and processed at the same partner's Benrose, Johannesburg facility. Full traceability applies from source to UK delivery. See our supply chain in detail.

Every batch is tested by reflectance analysis using an opacity reflectometer, and by wet sieve analysis for particle size distribution, before release — with results confirmed on the Certificate of Analysis.

It means documented South African origin and full traceability at every stage of the supply chain, from raw material intake through to UK delivery, with origin documentation available on request.

Elixir Minerals is the UK representative for premium industrial minerals produced by a single, integrated South African manufacturing partner — direct access to source, rather than aggregated third-party material.

Our South African manufacturing partner has more than 50 years of operational heritage, combining Limpopo Province pegmatite mining with established talc and barytes supply partnerships.

Contact our UK-based technical and commercial team through our contact page — we aim to respond within one business day.