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Brewsterite & Prehnite

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CSW172480

Brewsterite & Prehnite

Classic Locality

Description Tabs

Description
Locality: 
Whitesmith Mine, Strontian, Argyll, Scotland, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.8 × 4.5 × 2.8 cm
Description

Matrix with areas of nice, light golden coloured brewsterite (most likely brewsterite -Sr) with an area of light green prehnite.

Mineral Data
What's on the rock

Brewsterite

Synonym Of: 

Brewsterite-Ba

Formula: 
(Ba,Sr)[Al2Si6O16]·5H2O
Strunz: 
9.GE.20
Hardness: 
5.0

Brewsterite-Sr

Formula: 
(Sr,Ba,Ca)[Al2Si6O16]·5H2O
Strunz: 
9.GE.20
Hardness: 
5.0
Group Parent: 
Zeolite Group

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

Seller Information

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Seller's terms and conditions

Thank you for viewing my auctions. It goes without saying that maintaining high standards in both specimen quality and customer service are extremely important to me. If for any reason you are not happy with any aspect of your transaction then please let me know as soon as possible, ideally within 1 week of receiving your specimen. I will happily do all in my power to resolve the situation to your satisfaction. If your specimen is damaged upon delivery simply send me some photos to verify this and I'll provide you with a full refund or a replacement specimen, whichever you prefer. 

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