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Actinolite Psm Augite

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SHS184100

Actinolite Psm Augite

ex Collection Dr. Brandt (Northeim/Germany)
With Antique Label

Description Tabs

Description
Locality: 
Oslo, Norway
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.6 × 2.5 cm
Description

Nice pseudomorphoses actinolite after augite

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

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0