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Actinolite

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ATH1087128

Actinolite

Description Tabs

Description
Locality: 
Gold Hill, Boulder County, Colorado, United States of America
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.4 × 6 × 4.1 cm
Weight: 
145.00gr
Description

Actinolite - self collected by the previous owner - in the Gold Hill area, Utah.

These specimens from Gold Hill are massive and have partly a silvery color - they are therefore easy to distinguish from other locations.

While Actionolite is a more common mineral in the alps, it seems to occur more rarely in the United States.

 

Mineral Data
What's on the rock

Actinolite

Formula: 
☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Strunz: 
9.DE.10
Crystal System: 
Monoclinic - Prismatic
Hardness: 
5.0 - 6.0
Streak: 
White

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