Magnetic particles including ferrimagnetic (FM) and antiferromagnetic (AFM) particles are ubiquitous in the surface of Earth and Mars. The FM particles dominating soil magnetism usually coexist or compete with AFM hematite due to their comparable thermodynamic stability. The uncertain correlation can be modulated by phosphorous (P) absorption during aging of precursor amorphous iron (Fe) oxides. We investigated two Ferralsol sequences around a P mining field with comparable content of hematite but contrasting P/Fe ratio. The FM particles accompanying the formation of hematite are enriched stably at accelerating rates under high P/Fe but at unstably even rates under low P/Fe. The FM particles became less abundant and coarser while the iron oxide crystallinity increased monotonically as P/Fe decreased. We attribute it to more rapid grain growth of FM particles and transformation into hematite without P retarding the crystallization of iron oxides.