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Brewsterite & Calcite

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SHS1113954

Brewsterite & Calcite

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Description
Locality: 
Whitesmith Mine, Strontian, Argyll, Scotland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.4 × 1 cm
Description

Brewsterite and calcite on matrix

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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$5
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Start 20 Apr 18:00
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