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Apophyllite

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RGR797081

Apophyllite

Description Tabs

Description
Locality: 
Jeffrey Mine, Val-des-Sources, Estrie, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4 × 5 cm
Description

A very rare specimen of glassy, colorless to grey Apophyllite (Fluorapophyllite) crystals from the famous Jeffrey Mine of Quebec. World famed for the Garnet and Vesuvianites, Apophyllite is much more rare and almost never available. Apophyllite is from flat cavity, some crytal is from matrix, see pfoto.

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