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Harmotome Apophyllite & Calcite

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WND856926

Harmotome Apophyllite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
Korsnäs Mine, Korsnäs, Ostrobothnia, Finland
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 5.1 × 3.8 cm
Description

This is a fine combination piece with white, multifaced Harmotome, pale yellow, gemmy Apophyllite and pale amber coloured scalenohedral Calcite. All species are well developed, sharp and lustrous. A good specimen from the classic Scandinavian locality.

Mineral Data
What's on the rock

Harmotome

Formula: 
(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] ·12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany

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

Calcite

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

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