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Actinolite

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PDM764667

Actinolite

Description Tabs

Description
Locality: 
Großer Greiner, Finkenberg, Schwaz District, Tyrol, Austria
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.3 × 6 × 2.2 cm
Description

Aggregate of long green acicular actinolite with good silky lustre.

Acquired in 1993; Ex. Dr. Bob Janssens specimen, #1173.

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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