Limonite pseudo after Pyrite

This specimen began as pyrite, later altered by oxygen-rich waters that replaced the original crystal with limonite while preserving its form—a classic pseudomorph. Such transformations occur in the oxidized zone, where original minerals are slowly changed but their shapes remain intact.

Earthy in tone yet sharply defined, this piece captures a moment of mineral replacement, preserving the structure of pyrite while revealing the effects of time and weathering in the soils of North Carolina.