Knebelite

Definitions vary (manganoan fayalite or intermediate member of the Fayalite-Tephroite Series).

Structural context

Fayalite-Tephroite Series
Crystal System orthorhombic

Chemical context

Stoichiometric formulas

Knebelite
mindat.org
  • March 13, 2023from (Fe1.5Mn0.5)2SiO4 to (Mn1.5Fe0.5)2SiO4
mineralogy.rocks
  • Aug. 30, 2022(Mn2+0.5-1.5Fe2+0.5-1.5)2SiO4
Fayalite-Tephroite Series
mineralogy.rocks
  • Aug. 30, 2022A2(SiO4)