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LITHOEN

Material

Penouta precipitated tantalum salt, before calcination and purification

The tantalum salt as it comes out of the precipitation with potassium fluoride, before the calcination and purification the study applies afterwards. The 97.3 per cent purity the study reports is stated to be AFTER those steps, so it is not a property of this material, and recording one entity for both states had attached it here by accident.

Classification

material class
INTERMEDIATE
physical form
PRECIPITATE
primary commodity entity id
entity:tantalum-commodity

How this record is known

1
Settled consensus
Cited as the accepted position of the discipline.

1 of 1 claims on this page cite at least one registered source. Counts describe how each statement is known, not how likely it is to be true.

What Lithoen records

Each claim states how it is known and cites its evidence.

EstablishedPrecipitated with potassium fluoride. No purity is published for this material; the 97.3 per cent figure the source reports is explicitly stated to be after calcination and purification.

Measured at this deposit

The study reports that tantalum was precipitated using potassium fluoride as the precipitating agent, and separately that the tantalum salt reached 97.3 per cent purity AFTER calcination and purification. The purity therefore belongs to the material leaving those steps, not to the material entering them. This corpus records the precipitated salt as its own state and gives it no purity, because the source states none for it.

  • assertion basis: SUBJECT_MEASURED

Evidence support: Supported by the cited evidence one source

Evidence: Rodríguez 2020 Peer-reviewed

Record last updated 2026-09-11. Corrections follow the published corrections policy; superseded claims are retained, never silently edited.