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Stilbite On Prehnite

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PJM89566

Stilbite On Prehnite

Ex J & S Mommers Collection.

Description Tabs

Description
Locality: 
Prospect Quarry, Prospect, Cumberland County, New South Wales, Australia
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.6 × 1.8 cm
Description

An off white bowtie of stilbite on a matrix of pale green prehnite crystals from the long defunct prospect Quarry.

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

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa
Earthstones Australia

Seller Information

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