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Fuchsite & Actinolite

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SHS997141

Fuchsite & Actinolite

Description Tabs

Description
Locality: 
Groix Island, Morbihan, Brittany, France
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.6 × 2.5 × 1.2 cm
Description

Nice fuchsite and actinolite

Mineral Data
What's on the rock

Fuchsite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Formula: 
K(Al,Cr)3Si3O10(OH)2
Hardness: 
0.0

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