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1 item @ $25.00  

Quartz ps after Anhydrite

#BAC65309

Quartz ps after Anhydrite

#BAC65309
Availability
Available
Price
$80.00
Size
5.5 x 5 x 4 cm - Sm Cabinet 
Formula
SiO2 (RRUFF)
Locality
San Gabriel, Rio Grande do Sul, Brazil

I found no reference to this locality, perhaps you might know?

Originally labeled as Quartz ps after Laumontite, but looks more like a pseudomorph (or epimorph) after Anhydrite. The centers of the crystals are hollowed out. Any which way, it a nice example of replacement.

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
William & Anne Cook Collection
Mineralpedia
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On Dakota Matrix
Previously Sold Quartz
On Dakota Matrix
Other Available Quartz
WebMineral
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Mindat
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