Tungsten Concentrates (export) — AYCAS Commodities

Overview

Concentrates to refiner-grade.

Tungsten is a strategically critical metal — hard-metal tooling, superalloys, specialty steels and electronic applications all depend on a consistent supply. AYCAS operates at the origin end of that chain: sourcing from licensed Zimbabwean concentrate producers, blending to buyer specification where required, and shipping under MMCZ-permitted export to tungsten-specific refiners internationally.

04a

Scheelite — Calcium tungstate.

Scheelite concentrate (calcium tungstate, CaWO₄) is the principal tungsten ore found in Zimbabwean skarn deposits. We source gravity-processed and froth-flotation concentrates, with assay penalties for deleterious elements (molybdenum, tin, phosphorus) typical of specialist tungsten contracts.

Scheelite concentrate mineral specimen on dark slate

Specifications

WO₃ ≥ 40% (higher grades on request)
Moisture ≤ 2%
Penalty limits: Mo, Sn, P, As, S as per contract
1 MT bulk bags · palletised · containerised
Assay on MMCZ-certified sampling

Origin: Zimbabwean licensed mines (Midlands, Mashonaland)
Destinations: European and Asian tungsten refiners and APT producers

04b

Wolframite — Iron-manganese tungstate.

Wolframite concentrate ((Fe,Mn)WO₄) is the alternative tungsten mineral, typically sourced from vein and greisen deposits in the Zimbabwean tungsten belt. We supply on specification for smelters equipped to process wolframite feeds, with iron and manganese ratios declared per lot.

Wolframite concentrate mineral specimen on dark slate

Specifications

WO₃ ≥ 40% (higher grades on request)
Fe / Mn ratio declared per lot
Moisture ≤ 2%
Penalty limits: Sn, Nb, Ta, S, P as per contract
1 MT bulk bags · palletised · containerised

Origin: Zimbabwean licensed mines
Destinations: Tungsten smelters — Europe, China, South Korea, Vietnam

Framework

MMCZ-permitted, independently assayed.

Tungsten concentrate shipments carry the full mineral-export documentary set. Every lot is permit-cleared before loading and independently assayed before documents are released.

MMCZ licensing: Export permit obtained per shipment from the Minerals Marketing Corporation of Zimbabwe. Assay, tonnage and counterparty registered with MMCZ before loading.
Inspection & assay: SGS, Bureau Veritas or Intertek sampling and assay at loading. Umpire assay provision on disputed lots. Retained samples held 90 days.
Logistics: Road and rail to Beira (Mozambique) or Walvis Bay (Namibia). Container stuffing supervised; palletisation per buyer preference.
Contract: Standard MMCZ-framed sales contract. Incoterms 2020 — CIF, CFR or FOB per buyer. WO₃ pricing against published benchmarks (LBMA / tungsten APT referenced) where applicable.
Payment: Letter of credit typical — provisional 90% on shipping documents, final 10% on umpire-assay release. Documentary collection considered for established counterparties.

Sourcing Zimbabwean tungsten?

Send us your target specification, volume and destination — we'll come back with availability, assay ranges from current producers and an indicative quotation within five working days.

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