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Hornblende

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CLB109007

Hornblende

ex coll. Müller-Kaltenbach, Bochum

Description Tabs

Description
Locality: 
Rosenegg, Rielasingen-Worblingen, Freiburg District, Baden-Württemberg, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 7.9 × 1.1 cm
Description

Nice platy specimen with hornblende crystals. According to the original label there's supposed to be titanite also, but if there is, it's so minor I can't see it.

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

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