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Actinolite & Pyrite

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PDM629293

Actinolite & Pyrite

Description Tabs

Description
Locality: 
Selåsvann, Vegårshei, Agder, Norway
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10.8 × 2.8 × 2.7 cm
Description

Aggregate of long green acicular actinolite with silky lustre on a matrix of pyrite, typical for this Norwegian locality.

Acquired in 1963, Ex. Gabriel Fauvart #81.

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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