Measurements: 46 x 30 x 15 mm
Description: Prehnite, calcite and small quartz crystals sit on a calcite matrix which has a thin coating at the bottom, of a blackish mineral, unknown to us.
The only notable damage appears to be at the edges of the specimen.
Weight of Specimen: 20.8 g
Chemical Composition: Ca2Al2Si3O10(OH)2 (prehnite)
Specimen Code: BARG 027
US $ 12.