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Hornblende

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CYF722332

Hornblende

Description Tabs

Description
Locality: 
Vestfold Hills, Ingrid Christensen Coast, Princess Elizabeth Land, Eastern Antarctica, Antarctica
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 4.6 × 2.4 cm
Description

Hornblende slate with Garnet from Antarctica.

This specimen was acquired prior to the Antarctic minerals treaty, so it is perfectly fine to own.
 

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