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iBuye Calculator
Glossary
Plain-language definitions of every term used in the iBuye Calculator — built for Rwandan mineral traders.
- Ta2O5
- Tantalum pentoxide — the assay percentage used to value tantalum concentrate.
- MTU
- Metric tonne unit — 10 kg of contained metal; tungsten is priced per MTU of WO3.
- WO3
- Tungsten trioxide — the assay percentage used to value tungsten concentrate.
- LME
- London Metal Exchange — the global reference price for tin.
- RRA
- Rwanda Revenue Authority — the levy applied to mineral exports.
- RMA
- Rwanda Mining Association — per-tonne / per-kg fee.
- Inkomane fee
- Local cooperative fee charged in RWF per kilogram.
- Alex Stewart
- Inspection fee charged by Alex Stewart Geochemistry.
- Internal TC
- Internal treatment charge applied by the buyer.
- Government TC
- Government treatment charge applied to the LME price.
- Tag price
- Per-kg RWF advance paid against the official mineral tag.