Polüestrite

Polüestrite is a term that appears in some Estonian-language contexts as a mineral-name-like label, but it is not currently recognized as a mineral by major authorities. It is not listed in the International Mineralogical Association (IMA) database, nor in widely used mineral references such as Mindat.org or Webmineral. Without an IMA-approved description that includes a chemical composition, crystallography, and a type locality, polüestrite lacks an official mineral classification.

Etymology and usage: The name follows the common mineral-naming pattern, ending with -ite, yet there is no published, peer-reviewed description that would qualify polüestrite as a mineral species. In many discussions, it functions as a placeholder or fictional example used to illustrate naming conventions or to explore hypothetical minerals.

Composition and properties: There is no established chemical formula, crystal system, or physical properties for polüestrite. In literature where it appears, authors may ascribe arbitrary characteristics, but such descriptions are not standardized or officially recognized.

Occurrence and discovery: No verified locality or discovery narrative is documented in authoritative mineral literature. If polüestrite is referenced, it is typically within fictional works, educational exercises, or informal discussions rather than reporting a natural occurrence.

See also: Mineral names with the suffix -ite; Estonian mineralogy terms; Fictitious minerals in science fiction.

References: No IMA approval or Mindat entry is associated with polüestrite in standard references.