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Hornblende

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SHS772689

Hornblende

ex. Wards Natural Science Establishment (Rochester/New York)

Description Tabs

Description
Locality: 
Russell, St. Lawrence County, New York, United States of America
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 3 × 1.5 cm
Description

Nice hornblende crystal with old label

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