riadite

Riadite is a name that appears in a few informal mineralogical discussions as a proposed mineral species. As of 2025, there is no peer‑reviewed description or IMA‑approved proposal for riadite, and it does not have a recognized entry in major mineral databases. Consequently, its composition, crystal structure, and physical properties have not been established to the standard required by mineral nomenclature.

The etymology and provenance of the name are unclear in published sources. In some ambiguous or historical notes, riadite is mentioned as a hypothetical oxide or silicate mineral, but these references lack verifiable data and are not considered authoritative.

Because no formal description exists, no chemical formula, crystal system, hardness, luster, or typical associations can be reliably stated. Similarly, there are no verified localities or geological contexts for riadite.

In the absence of a formal description, riadite remains a nomenclatural placeholder rather than a recognized mineral. Should a credible, peer‑reviewed discovery be proposed, the IMA would evaluate and publish a formal description, after which riadite could gain official status and an entry in standard mineral databases.

This article reflects the current lack of consensus. For further information on mineral nomenclature, see lists of minerals and resources such as Mindat and the IMA Commission on New Minerals, Nomenclature and Classification.