Kinetics of Fe2+-Mg Order-Disorder in P21/c Pigeonite: Implications for Cooling Rates Calculations
Abstract
A kinetic study of Fe-Mg exchange reaction was performed on P2^1/c pigeonite by X-ray single-crystal diffraction. Disordering rate constants at 650,700,750 and 850°C were calculated using Mueller's model providing an activation energy of 47.7 kcal/mol.
- Publication:
-
Lunar and Planetary Science Conference
- Pub Date:
- March 2004
- Bibcode:
- 2004LPI....35.1145D