- CHESA-25
- Manganese Biominerals (Todorokite, Romanechite, Birnessite) Ps. After Arthropod Burrows
- Chesapeake Bay, Calvert County, Maryland, USA
- Miniature, 4.3 x 3.4 x 3.0 cm
- Ex. Dr. Robert Hazen
- SOLD
Among the most distinctive specimens from the new find are mineralized arthropod burrows and "gyroliths