‘Coutinite’, ‘Coutinhite’ and ‘Neodymite’ Discredited as Identical to Lanthanite-(La) and/or Lanthanite-(Nd)

D. Atencio

Departamento de Mineralogia e Petrologia, Instituto de Geociências, Universidade de São Paulo, Caixa Postal 11348, 05422-970 São Paulo SP, Brazil

Abstract: The names ‘coutinite’ [= lanthanite-(Nd)], ‘coutinhite’ [= lanthanite-(La)], and ‘neodymite’ [= lanthanite-(Nd) or lanthanite-(La)], do not follow the rules of nomenclature for rare earth minerals. These names were introduced without International Mineralogical Association (IMA) approval and are now formally discarded (Nomenclature Proposal 98-B) by the Commission on New Minerals and Mineral Names (CNMMN) of the IMA.

Keywords: lanthanite-(La) • lanthanite-(Nd) • coutinite • coutinhite • neodymite • Curitiba • Brazil

Mineralogical Magazine; October 1999 v. 63; no. 5; p. 761-762; DOI: 10.1180/002646199548772
© 1999, The Mineralogical Society
Mineralogical Society (www.minersoc.org)