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Hornblende

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TPX1143668

Description Tabs

Description
Locality: 
Studsdalen, Kragerø, Vestfold og Telemark, Norway
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 2.4 × 1.4 cm
Weight: 
45.00gr
Description

Spectacular, fully terminated hornblende crystal typically featuring a tuft of white, fibrous, acicular actinolite crystals; some crystals feature this actinolite at both tips.
The hornblende from this deposit is highly prized for its finish and quality and is a true Norwegian classic.

Collected in 1980 by Michael James Long.

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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