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Stilbite-Ca Adularia & Chlorite

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CLB210856

Stilbite-Ca Adularia & Chlorite

collected by Strahler Tumaisch Curschellas
Classic Locality

Description Tabs

Description
Locality: 
Druntobel, Sedrun, Tujetsch, Surselva Region, Grisons, Switzerland
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 2 × 1.4 cm
Description

Little, but almost perfect specimen of seldom seen alpine stilbite crystals, combined with nice adularia crysrtals, sprinkled with chlorite. With original stamped label from Tumaisch Curschellas, Sedrun 'strahler' (Swiss term for professional alpine crystal seekers).

Mineral Data
What's on the rock

Stilbite-Ca

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

Adularia

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic
Hardness: 
6 Ortho - clase

Chlorite

Synonym Of: 

Chlorite Group

Group Parent: 
Chlorite
Crystal System: 
Monoclinic
Hardness: 
2 - 2.5
Colour: 
Green, Grey, Brown
Streak: 
colourless

Seller Information

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