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0 item @ $0.00  

Quartz var. Chacedony after Fluorite

#PD31688

Quartz var. Chacedony after Fluorite

#PD31688
Availability
Sold
Size
5.5 x 4 x 3.5 cm - Sm Cabinet 
Formula
SiO2 (RRUFF)
Locality
Wheal Mary Ann, Menheniot, Liskeard, Cornwall, England

A fascinating mineral specimen which was at one time octahedral Fluorite and is now Quartz variety Chalcedony which replaced the Fluorite as epimorphs. Excellent specimen with crystals to 1.5cm. There is a little bit of light green Fluorite on the backside.

Quartz

Formula
SiO2 
Crystal System
Trigonal 
Crystal Habit
Crystalline - Coarse, Druse, Crystalline - Fine 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, violet, gray, yellow 
Streak
white 
Class
Trigonal - Trapezohedral 
Fracture
Conchoidal 
Hardness

Data courtesy of Webmineral.

Collection
Phillips Collection
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