Measurements: 110 x 60 x 35 mm
Description: A prehnite ball (25 mm diameter) shares a basalt matrix with quartz ancd calcite crystals.
The prehnite has a few flaws and a contact mark. The specimen has been trimmed on two sides of its matrix, to display better.
Weight of Specimen: 306 g
Composition: Ca2Al2Si3O10(OH)2 (prehnite)
Specimen Code: NAM 020