faujasiit

Faujasiit is not recognized as a distinct mineral species by major mineralogical authorities. In contemporary mineral databases and IMA-accredited catalogs, there is no entry for a mineral formally named “Faujasiit.” In some sources, the term appears as a misspelling or variant of the better-known zeolite Faujasite, which leads to confusion in non-specialist discussions.

Relation to Faujasite: The more widely recognized mineral is Faujasite, a zeolite group mineral named after the French naturalist Faujas de Saint-Fond. Faujasite encompasses natural varieties that occur in hydrothermal environments and are valued for their porous aluminosilicate framework. These frameworks enable ion exchange and large-molecule adsorption, properties that underlie Faujasite’s use in catalysis and gas separation, as well as in some industrial processes.

Nominal naming and usage: If the label “Faujasiit” appears in informal writings, it is typically a spelling variant or a simple error for Faujasite rather than a separate mineral species. Because Faujasite itself comprises specific structural and compositional characteristics, substituting a non-standard name can obscure precise identification and classification.

Etymology: Faujasite derives its name from Jean-Baptiste-Camille Faujas de Saint-Fond (often cited as Faujas de Saint-Fond), reflecting historical practice of naming minerals after scientists. The supposed form “Faujasiit” does not have an established etymology in recognized mineral nomenclature.

See also: Faujasite, Zeolites, Mineral nomenclature, International Mineralogical Association (IMA).