Measurements:
57
x 44 x 37 mm
Description:
A group
of (mostly green) fluorite crystals with bits of hyalite opal on some
faces, and a few small pieces of quartz attached. The hyalite opal fluoresces under ultraviolet light.
The only notable damage is to
some edges of the specimen.
Weight of Specimen:
93.2 g
Chemical
Composition: CaF2
(fluorite)
SiO2•1.5(H2O) (opal)
SiO2 (quartz)
Hardness on Mohs Scale: (fluorite) 4 &