1. converting into or impregnating with pyrite (iron sulfide mineral); undergoing or causing a process of pyritization
Usage: geology, mineralogy; chiefly British spelling (American: pyritizing); present participle or gerund form

Examples

• The fossil was preserved through pyritising, which replaced the original organic material with iron sulfide.
• Pyritising of the sediment layers occurred over millions of years.
• Geologists observed pyritising in the ore deposits near the volcanic region.
• The process of pyritising can enhance the visibility of microscopic fossils.
• Pyritising is common in anaerobic marine environments where sulfur-reducing bacteria are active.