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Fetiasite

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JYJ798435

Fetiasite

Description Tabs

Description
Locality: 
Binn Valley, Valais, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.3 × 0.8 cm
Description

Very large black fetiasite from the Lärchltinit zone, Binn valley, Switzerland. Dated to 1994. 

Mineral Data
What's on the rock

Fetiasite

Formula: 
(Fe3+,Fe2+,Ti)3(As2O5)O2
Strunz: 
4.JB.05
Crystal System: 
Monoclinic
Hardness: 
5.0
Type Locality: 
Mt Cervandone (Scherbadung; Cherbadung), Devero Alp, Baceno, Devero Valley, Antigorio Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy