Calcium Diffusion in a Mugearite Melt
The diffusion rate of calcium in a mugearite melt is determined to vary between 1.07 × 10−7 and 3.36 × 10−7 cm2/s for a temperature range of 1230 to 1423 °C. The activation energy of the process is 29.5 kcal per mole. Diffusion curves are measured with an electron microprobe.