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Calcite On Calcite Psm Apophyllite

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GMB694672

Calcite On Calcite Psm Apophyllite

Pseudomorph

Description Tabs

Description
Locality: 
Strzegom, Strzegom-Sobótka Massif, Lower Silesian Voivodeship, Poland
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 4 × 3.5 cm
Description

A cluster of creme white sharp blocky crystals shaped like apophyllite but consisting of calcite. These pseudomorphs are well known but very rare from the strzegom granite district. In fact, apophyllites have never been found, just the pseudomorphs. On top with nicely twinned translucent colorless calcite crystals.

The german post increased the postage, sorry for higher shipping costs since 2019.

Mineral Data
What's on the rock

Calcite

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

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

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Marco Drechsel

SPK Mittelsachsen

SWIFT/BIC-Code: WELADED1FGX

IBAN: DE49 870520004111076110