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Fluorapophyllite On Natrolite

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CAM198741

Fluorapophyllite On Natrolite

Ex Hans-Jürgen Wilke collection

Description Tabs

Description
Locality: 
Mariánská Skála, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
Size Range: 
Cabinet (10-18 cm)
Size: 
10.3 × 7 × 4.3 cm
Largest Crystal: 
0.90cm
Description

A rich coverage of lustrous colourless to white fluorapophyllite crystals up to 9 mm on a bed of orange-pink natrolite.
A very showy display piece.

Mineral Data
What's on the rock

Fluorapophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany
Cartils Minerals

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