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Apophyllite & Calcite

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MGR171486

Apophyllite & Calcite

Description Tabs

Description
Locality: 
Zillertal, North Tyrol, Tyrol, Austria
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.1 × 2.8 cm
Description

Apophyllite up to 5mm across. This is an oustanding rarity. Specimen from Elfriede tunnel are very rare and hard to obtain. The "matrix" is a a floater of calcite, minor chlorite layer helps to give a very tridimentional look, also it brings contrast and color to the piece. Apophyllite from alps in very rare, the exposed crystal at the top is clear, glossy and sharp. excellent assemble and undamaged.

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

Calcite

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