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Stilbite & Orthoclase

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SHS204944

Stilbite & Orthoclase

Description Tabs

Description
Locality: 
Messum Crater Area, Erongo Region, Namibia
Class: 
Single Crystal
Size Range: 
Cabinet (10-18 cm)
Size: 
12.6 × 9 × 6.2 cm
Description

 Nice stilbite crystals with orthoclase and quartz 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

Orthoclase

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Hardness: 
6.0
Streak: 
White
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