Our Products

Products | Gold Doré, Tin Concentrate, Columbite-Tantalite | Sastron
Sastron supplies gold doré (85–95% Au), tin concentrate (64–68% Sn) and columbite-tantalite (36–47% Nb₂O₅) from Nigeria.  
It is a NEPC registered exporter that supplies these three commodities sourced from Nigeria's established mineral-producing regions. All products are subject to in-house quality verification before export. Detailed analysis reports, weight certificates and chain of custody documentation are provided with every shipment.

  • Gold Doré

    Gold doré bars produced from responsibly sourced Nigerian gold, purchased from licensed artisanal miners and cooperatives. Gold is melted in-house using induction furnaces and cast into doré bars — the internationally accepted feedstock form for gold refineries.

    • Specifications

    All specifications subject to batch verification. Independent assay available at buyer request.
    Request Product Information Request Specs Sheet
    Discuss Supply Arrangements Request Trial Shipment

    Tin Concentrate (Cassiterite)

    Tin concentrate sourced from the Jos Plateau tin belt — one of Nigeria's most commercially significant mineral export streams. The Jos Plateau has been a centre of tin production for over a century.

    Specifications

    All specifications subject to batch verification. Independent assay available at buyer request.
    Request Product Information Request Specs Sheet
    Discuss Supply Arrangements Request Trial Shipment

    Applications

    • • Solder and electronics
    • • Tinplate — food and beverage packaging
    • • Tin chemicals — PVC stabilisers, glass coatings
    • • Bronze and alloys

    Columbite-Tantalite Concentrate

    Columbite-tantalite is the primary ore of niobium (Nb) and a source of tantalum (Ta). Nigeria, and Plateau State in particular, holds significant columbite deposits. Niobium is designated a Critical Raw Material by the European Union and a Critical Mineral by the United States government.

    Specifications

    All specifications subject to batch verification. Independent assay available at buyer request.
    Request Product Information Request Specs Sheet
    Discuss Supply Arrangements Request Trial Shipment

    Applications

    • • High-strength steel alloying
    • • Aerospace superalloys
    • • Energy pipeline infrastructure
    • • Superconductors
    • • Electronics capacitors (tantalum)

    Commercial Arrangements

    Trial Shipment

    Single initial transaction to evaluate quality, documentation and capability.

    Spot Transaction

    Individual purchase on agreed terms — no long-term commitment.

    Container Programme

    Regular containerised shipments on agreed schedule on the time.

    Short-Term Agreement

    3–12 month supply agreement with agreed schedules and specifications.

    Offtake Agreement

    Volume commitment over agreed period guaranteed as always.

    Strategic Supply Partnership

    Multi-commodity, long-term commercial and strategic collaboration.
    Pricing referenced to international benchmarks: London Metal Exchange (tin), international gold spot price, prevailing market rates (columbite-tantalite).
    Contact Commercial Team
    © 2025 Sastron and Company Ltd. Registered in Nigeria. NEPC Registered Exporter. All rights reserved.

    Disclaimers

    Product specifications, grades and supply volumes are indicative and subject to batch verification, commercial agreement and availability.
    Sastron and Company Ltd does not engage in the purchase of minerals from unlicensed sources. All transactions are subject to applicable Nigerian laws, internal compliance procedures and commercial agreement.