Measurements: 55
x 43 x 28
mm
Description: Very unusual and rare, blueish-green prehnite balls sit on a quartz and basalt matrix. The matrix has been trimmed for better display.
We have never seen this colour prehnite from the Brandberg area before.
The prehnite has quite a bit of
damage around the edges, and has flaws.
Weight of Specimen:
75.4 g
Chemical Composition:
Ca2Al2Si3O10(OH)2 (prehnite)
SiO2 (quartz)
Hardness
on Mohs Scale: (prehnite) 6-6.5
(quartz) 7
Location:
Specimen
Code: NBB 138
US $ 65
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