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Prehnite

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CLB134462

Prehnite

ex coll. J. Dobrzewski
New Discovery

Description Tabs

Description
Locality: 
Burgberg Quarry, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4.3 × 3.5 cm
Description

Thick layer of pale green prehnite with unusually big crystals for the locality. Only a few of this specimen were found and were gone very quickly. Perhaps the biggest and best prehnite crystals from any German locality ever.

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

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