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Ferro-hornblende

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CR34785

Ferro-hornblende

Classic Locality

Description Tabs

Description
Locality: 
Kragerø, Vestfold og Telemark, Norway
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 9 × 8 cm
Largest Crystal: 
4.50cm
Description

This is a very good specimen on blackgreen sharp ferrohornblende crystals on matrix collected 1979

Mineral Data
What's on the rock

Ferro-hornblende

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