当这些表面和磁铁矿一接触，氧原子就能从石英砂转移到磁铁矿，形成了一种新的矿物，赤铁矿。
When these surfaces came into contact with the magnetite, an oxygen atom could be transferred from quartz to magnetite, forming a new mineral, hematite.
磁铁矿颗粒氧化按温度划分为两段，在较低温度下主要是铁离子扩散，较高温度下氧离子扩散的扩散能力增强。
Oxidation of magnetite grains is divided into tow stages, according to temperature, and iron ion diffuses at lower temperature and diffusion amount of oxygenic ion increases at higher temperature.
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