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Hornblende

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GND33025

Hornblende

Description Tabs

Description
Locality: 
Bear Lake Diggings, Monmouth Township, Haliburton County, Ontario, Canada
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 4 × 2.2 cm
Description

A single doubly terminated crystal of hornblende. Undamaged with no matrix or points of attachment. Reasonably sharp and lustrous for the species with some faces 'stepped'.

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
Gondwana Minerals