'IMA 1964-003' mboziite was renamed to ferri-taramite with IMA 1978 nomenclature then renamed to ferritaramite with IMA 1997 nomenclature and eventually renamed and redefined potassic-ferro-ferri-taramite with IMA 2012 nomenclature.
History
Activities related to discovery and approval of the group members
Structural context
Potassic-ferro-ferri-taramite
Crystal System monoclinicCrystal Class prismaticSpace Group C2/m
Chemical context
Stoichiometric formulas
Mboziite
mindat.org
March 13, 2023[(K,Na)][CaNa][Fe2+3AlFe3+[Al2Si6O22](OH)2
Potassic-ferro-ferri-taramite
mindat.org
March 13, 2023K(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2The taramite root name minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 1.5 apfu < C(Al+Fe3++2Ti).
Potassic-ferro-ferri-taramite is defined with
A position: K dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: OH dominant