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Description: Five
medium quality quartz specimens ranging in length between 41 and 75 mm.
These
have gas inclusions, floaters, inverted crystals, hematite coating,
smoky
colouring, rainbows, and minute moving bubbles. Total
Weight of Bulk Chemical
Composition: SiO2 Hardness
on Mohs Scale: 7 Location:
Specimen
Code: Bulk
020 . . . . . .
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