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Stilbite & Quartz

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SCH50230

Stilbite & Quartz

Description Tabs

Description
Locality: 
Castilla Quarry, La Cabrera, Madrid, Spain
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 1.1 × 1.4 cm
Description

Transparent stilbite sheaves are richly scattered over a crystal of orthoclase with a slightly smoky quartz.

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

Quartz

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

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