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Apophyllite

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WND836709

Apophyllite

Classic Locality

Description Tabs

Description
Locality: 
Das Antas Tunnel, Veranópolis, Rio Grande do Sul, Brazil
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.8 × 6.9 × 6.9 cm
Description

Excellent developed, razor sharp and mirror bright crystals of Apophyllite,- AND NOT FROM INDIA !!! This great piece is from the Das Antas Tunnel , Rio Grande do Sul, Brazil. The crystals are partly lucent but almost transparent and perfectly terminated. Hard to come by this fine, in the meantime rare and old-timed material which was found during the  tunneling many decades ago.

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
Wendel Minerals

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