037 - Gibbsite on Wavellite   $35.00
General Trimble's Mine
East Whiteland Township
Chester County, PA
1.9" x 1.24" (49mm x 30mm)
This is the unusual stalactitic formation of Wavellite on Goethite that occurs only at General Trimble's Mine. 
Gibbsite occurs here as an outer layer coating on top of the white Wavellite underneath. 
The Joseph and Jeanne Dague Collection