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Mineralati

Minerals

Aspedamite

aspedamite

☐ 12(Fe²⁺3Fe²⁺)Nb4(ThNb9Fe²⁺3 Ti4+O42)(H2O)9(OH)3

Aspedamite: Mineral information, data and localities.

Aspedamite: Mineral information, data and localities. — via www.mindat.org · Source

Overview

Aspedamite is a very rare mineral, one of two natural heteropolyniobates. Its chemical formula (one of the possible formulas) is complex and shows the presence of essential vacancies: []12(Fe3+2Fe2+)Nb4(ThNb9Fe3+2Ti4+O42)(H2O)9(OH)3. Its structure (isometric, space group Im3) is the same as of the second known heteropolyniobate - menezesite. Aspedamite is somewhat similar to another mineral from Norway, peterandresenite, which is a hexaniobate.

Scientific references

  1. Aspedamite — Wikidata. https://www.wikidata.org/wiki/Q18761813 Link
  2. Aspedamite — Wikipedia. https://en.wikipedia.org/wiki/Aspedamite Link