Measurements: 41 x 32 x 20 mm
Description: A specimen consisting of lovely green bladed prehnite crystals and a few calcite crystals, with a quartz crystal (with only a touch of amethyst colouring and a few hematitie specks) sticking through the mass of prehnite blades near the side of the specimen.
The prehnite blades are partly covered with a sprinkling of very minute crystals of some white mineral (?) that almost looks like snow :-) The small matrix is (?)sandstone. The specimen has a few traces of epidote.
Damage is limited to a few very minute nicks to the quartz crystal, otherwise only some damage to bottom and edges of specimen.
Weight of Specimen: 24.5 g
Composition: Ca2Al2Si3O10(OH)2 (prehnite)
Location: Brandberg, Namibia.
Specimen Code: NBB 157
US $ 30.