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Nontronite

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CSL517265

Nontronite

Rare Mineral

Description Tabs

Description
Locality: 
Gyöngyössolymos, Mátra Mountains, Heves County, Hungary
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 3.1 × 2.5 cm
Description

Yellowish-green masses of Na-Fe bearing  phyllosilicate mineral nontronite in matrix.

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
Loranth Minerals

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