Measurements: 57
x 34 x 22 mm
Description: Quartz crystals sit on a matrix of mainly quartz and basalt. A few of the crystals have minute reddish hematite threads and specks inside.
Some of the
crystals, along the edges of the specimen, have nicks.
Weight of Specimen: 37.0 g
Chemical
Composition: SiO2 (quartz)
Hardness
on Mohs Scale: (quartz) 7
Location:
Specimen Code: NBB 026
US $ 35
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