Manganese ore: typical specification
Indicative- Manganese
- Typically 36% to 46% Mn
- Iron
- Limits as agreed, often 4% to 10%
- Silica and phosphorus
- Limits as agreed
- Sizing
- Lumps of about 10 to 75 mm; fines below 10 mm
- Shipment
- Bulk vessels, or bagged in containers
- Pricing basis
- Per dry metric tonne unit of Mn, against a published reference
Typical specification for reference. Payable content is settled on the final assay at the discharge or load port, as set out in the contract.
Delivery terms
Documents supplied

Inspected at loading. Paid against documents.
Independent inspection by SGS, Bureau Veritas, Intertek or an equivalent accredited surveyor, with payment by documentary letter of credit.
About manganese ore
Manganese ore is smelted into ferromanganese and silicomanganese, which go into almost all steel. South Africa, Gabon and Australia are the largest exporters.
Ore is graded by manganese content and by its iron, silica and phosphorus levels. Lumps suit most smelters directly; fines are usually sintered first.
Frequently asked questions
How is manganese ore priced?
Per dry metric tonne unit (dmtu), which is 1% Mn in a dry tonne. A tonne of 44% ore is worth 44 units.
Can you supply both lumps and fines?
Yes. Tell us how your smelter takes the ore and we will match the sizing.
How is payment usually made?
By documentary letter of credit from a bank acceptable to the seller, with payment against shipping documents and the inspection certificate.
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