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Stilbite

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QRI648907

Stilbite

Classic Locality

Description Tabs

Description
Locality: 
Strzegom, Strzegom-Sobótka Massif, Lower Silesian Voivodeship, Poland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.6 × 5.2 × 3.1 cm
Weight: 
24.00gr
Description

Elegant and rich honey stilbite from the famous Strzegom quarries in Poland. A number of bow-ties proudly crop out of microcline matrix, which once likely formed a pocket or vein. Stilbite is very lustrous and well shaped.
The specimen was purchased in July 2011 during the 1st Mindat Conference. The organizers had arranged a small mineral show only for the participants, and I bought the specimen from one of the local collectors.

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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