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"Magnetite, on dry heating undergoes oxidation with no concomitant change in structure except for cell contraction; the x-ray powder patterns of such oxidized magnetites are similar to that of maghemite. By further oxidation, hematite exsolves as a separate phase and after prolonged heating at 800 degrees C, magnetite is completely oxidized to hematite. The petrogenetic significance of these studies is also discussed."
This record provided courtesy of AGI/GeoRef.
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