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Tetraferriannite

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ESM537074

Tetraferriannite

Description Tabs

Description
Locality: 
Not Known
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1.5 × 1.3 cm
Description

Stack of lustrous brown tetraferriannite blades

Bolling, Norway

Mineral Data
What's on the rock

Tetraferriannite

Formula: 
KFe2+3((Fe3+,Al)Si3O10)(OH)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Type Locality: 
Dales Gorge member Fe-formation, Wittenoom (Wittenoom Gorge), Ashburton Shire, Western Australia, Australia