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Actinolite Psm Hornblende

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FNW95442

Actinolite Psm Hornblende

Description Tabs

Description
Locality: 
Monchi Mine, Burguillos del Cerro, Badajoz, Extremadura, Spain
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.2 × 5.7 × 1.7 cm
Description

Dark green specimen of actinolite pseudomorphs after hornblende.

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

Hornblende

Synonym Of: 

Ferro-hornblende

Formula: 
☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0

Magnesio-hornblende

Formula: 
☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0
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