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Prehnite With Apophyllite

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QRI890298

Prehnite With Apophyllite

Former collection Christian Mavris
Classic Locality

Description Tabs

Description
Locality: 
Prospect Park Quarry, Passaic County, New Jersey, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.3 × 2.5 cm
Largest Crystal: 
0.40cm
Weight: 
57.00gr
Description

Choice miniature consisting of a matrix geode fully lined with sharp white apophyllite crystals and blocky calcite, with on top a perfect apple green sphere of prehnite.

Excellent specimen from Prospect Quarry, nowadays impossible to extract. In my collection since the early 2000s, it is one of my favorites.

Mineral Data
What's on the rock

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

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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