Maghemite(disordered)

Formula : Fe2O3

Family: 
Space group: 
Isometric - Tetartoidal HM symbol (2 3) Space Group: P 213
Dana class: 
4.3.7.1III - 4 Oxide Minerals ; 4.3 Simple Oxides with a cation charge of 3+ (A+++2 O3) ; 4.3.7
High temperature: 
Stable at room temperature and in in low temperature hydrothermal systems
Geological context: 
Formed by weathering or low-temperature oxidation of spinels containing ferrous iron, commonly magnetite or titanian magnetite. Widespread yellow pigment in sediments.

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

T(°C) 0 25 60 100 150 200 250 300
log10K 5.20 2.84 0.13 -2.36 -4.87 -6.98 -8.88 -10.73