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Stilpnomelane

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ESM209904

Stilpnomelane

Description Tabs

Description
Locality: 
Mont Chemin, Martigny, Valais, Switzerland
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.8 × 5.1 × 5.1 cm
Description

Dark red stilpnomelan blades on red stilpnomelan crystals with green epidote crystals

Mineral Data
What's on the rock

Stilpnomelane

Formula: 
(K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36·nH2O
Strunz: 
9.EG.40
Hardness: 
3.0 - 4.0
Type Locality: 
Melchior and Tobias adits, Horní Údolí (Obergrund), Zlaté Hory (Zuckmantel), Olomouc Region, Moravia (Mähren; Maehren), Czech Republic