Peralumine

Peralumine is a name that has appeared in rare mineralogical writings but is not widely recognized as a distinct mineral species. In current reference works and major databases, there is no entry for peralumine with a defined chemical formula, crystal structure, or type locality.

Historical references use the term inconsistently; some early accounts describe peralumine as an alumina-rich oxide or silicate phase associated with pearl-like nodules in rocks, but these descriptions lack reproducible data. Because no verified specimen exists, there is no accepted classification (such as crystal system or mineral group) for peralumine.

The name likely derives from "pearl" and "alumine," but the origin is uncertain and not standardized. As such, peralumine is generally treated as historical or obsolete in modern mineralogy; references that mention it should be consulted with caution and cross-checked against primary sources.

See also: Alumina; Peraluminous; List of minerals.