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Hornblende

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SHS518735

Hornblende

ex. Staatl. Mineralien Niederlage Freiberg (Saxony/Germany)

Description Tabs

Description
Locality: 
Kragerø, Vestfold og Telemark, Norway
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 2.1 × 2.8 cm
Description

Nice old piece of hornblende with old label

Mineral Data
What's on the rock

Hornblende

Synonym Of: 

Ferro-hornblende

Formula: 
☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0

Magnesio-hornblende

Formula: 
☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0