Phosphate Pebble

Bone Valley Formation

Phosphate Pebble

A smooth, dark, waxy pebble from Florida's Bone Valley — the matrix that carries most of the state's fossils.

Typical size
0.25–2 in
How often it turns up
Very common at fossil sites
Collecting
Check local rules

Collecting on state land or in rivers may require a permit.

Handling
Safe to handle

How to tell it apart

  • Smooth, rounded, slightly waxy feel
  • Dark brown, grey or black
  • Heavier than a quartz pebble of the same size

Found one?

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