Item talk:Q162560
From geokb
Mindat Short Description
A very important change concerning nepheline is found in the recent (42th) IMA Newsletter: potassium is essential in nepheline and the formula is changed to that recognized by Mindat See https://www.mindat.org/forum.php?read,14,437726,437726#msg-437726...
Geoscience Ontology Status Notes
Haüy R J (1801) Népheline, Traité de minéralogie 3, 186-190 Chemical formula revised from NaAlSiO_4_: Hålenius U, Hatert F, Pasero M, Mills S J (2018) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 42. New minerals and nomenclature modifications approved in 2018. Mineralogical Magazine 82, 445-451
IMA Formula (from Mindat)
Na3K(Al4Si4O16)
RRUFF Formula (from Geoscience Ontology)
Na3K(Al4Si4O16)
