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Stilbite

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GND58766

Stilbite

Description Tabs

Description
Locality: 
Dinnertime Hill, Arkaroola District, Flinders Ranges, South Australia, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.6 × 4.3 × 3 cm
Largest Crystal: 
3.00cm
Description

A splendid cluster of orange stilbite crystals over 1 cm across without matrix from this well known area.

Stilbite and other zeolites are found weathering out of ancient volcanic rocks dating back over 800 million years. No damage.

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
Gondwana Minerals