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Apophyllite With Natrolite & Calcite

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QRI942952

Apophyllite With Natrolite & Calcite

Former collection Christian Mavris
With Antique Label

Description Tabs

Description
Locality: 
Mariánská Skála, Ústí nad Labem District, Ústí nad Labem Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.7 × 5.2 × 4.7 cm
Largest Crystal: 
1.20cm
Weight: 
224.00gr
Description

Elegant small cabinet featuring candid white apophyllite laying in a carpet of pink natrolite needles, while associated to rounded yellow calcite crystals.

Contrastful oldtimer zeolite specimen, with labels which date back to several decades ago. Infager collection was acquired by Indergand in the 1950s.

Mineral Data
What's on the rock

Apophyllite

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

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,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

Calcite

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

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