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Nontronite

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MEX197378

Nontronite

ex private collection
Classic Locality

Description Tabs

Description
Locality: 
Roter Bär Mine, St Andreasberg, Goslar, Lower Saxony, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.2 × 2.3 cm
Description

A nice, small specimen of solid, green nontronite.
We obtained directly from the finder.

Mineral Data
What's on the rock

Nontronite

Formula: 
Na0.3Fe2((Si,Al)4O10)(OH)2·nH2O
Strunz: 
9.EC.40
Hardness: 
1.5 - 2.0
Type Locality: 
Saint-Pardoux-la-Rivière, Dordogne, Aquitaine, France