Description
Pyrite Suns
- 350 Million Years Old
- Collected in a Coal Mine
- Sparta, Illinois
- Specimen measures 2.77″ wide
- MORE Natural Mineral Specimens for Sale
They may look similarly like fossilized plants, but the crystal structures actually formed deep underground and also under great pressure about 350 million years ago. These round disks sometimes occur between seams of coal and may be found when coal is mined. Although pyrite is quite common worldwide, the disk form is virtually unique to Illinois.
By Marie Čcheidzeová – Own work
