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Dachiardite-Ca & Stilbite-Ca

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SCH56881

Dachiardite-Ca & Stilbite-Ca

Description Tabs

Description
Locality: 
Csák Hill, Szob, Börzsöny Mountains, Pest County, Hungary
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1 × 1.2 cm
Description

A specimen of  colourless dachiardite-Ca crystals with good transparency, scattered over the matrix and associated with a fan of stilbite-Ca.

Mineral Data
What's on the rock

Dachiardite-Ca

Formula: 
(Ca,Na2,K2)5Al10Si38O96·25H2O
Strunz: 
9.GD.40
Crystal System: 
Monoclinic
Hardness: 
4.0 - 4.5
Type Locality: 
La Speranza (Pisani's Quarry), San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy...

Stilbite-Ca

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

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