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Stilbite

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CLB49834

Stilbite

Description Tabs

Description
Locality: 
Montresta, Oristano Province, Sardinia, Italy
Size Range: 
Small cabinet (7-10 cm)
Size: 
2.3 × 7.9 × 4.7 cm
Largest Crystal: 
0.80cm
Description

Interesting sample of Italian stilbite from the famous Sardinia island. Very nice free-standing crystals.

Mineral Data
What's on the rock

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White

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