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Gypsum On Quartz

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CR166497

Gypsum On Quartz

With Antique Label

Description Tabs

Description
Locality: 
Thusis, Domleschg, Hinterrhein Valley, Grischun, Switzerland
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 6.5 × 3.8 cm
Largest Crystal: 
3.30cm
Description

Beautiful and very old specimen of a double terminated, gemmy gypsum crystal on a bed of quartz crystals.

Mineral Data
What's on the rock

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
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