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Prehnite & Albite

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CLB147072

Prehnite & Albite

ex coll. Uta Müller
Classic Locality

Description Tabs

Description
Locality: 
Burgberg Quarry, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3.4 × 2.5 cm
Description

A very nice blueish green prehnite aggregate with a nice 'fat' luster. The tiny colorless crystals seem flattened and look like albite to me, which is rare at Steinperf.

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

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden

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