Measurements: 37 x 30 x 23 mm Description: A lovely arrangement of calcite (two crystal habits), quartz, prehnite and waterclear, small analcime crystals, on a small basalt matrix with traces of epidote. The specimen has some damage, mostly to the edges. Weight of Specimen: 22.8 g Chemical
Composition: SiO2 (quartz)
Ca2Al2Si3O10(OH)2 (prehnite) Hardness
on Mohs Scale: (quartz)
7 Location: Brandberg, Namibia. Specimen Code: NBB 035 US $ 45 . . . .
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