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Allophane

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CLB179287

Allophane

Classic Locality

Description Tabs

Description
Locality: 
Victor Mine, Eisenberg, Goldhausen, Korbach, Waldeck-Frankenberg, Hesse, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7.7 × 2.4 cm
Description

Very rich specimen with glossy blue allophane on matrix. Very nice contrast.

Mineral Data
What's on the rock

Allophane

Formula: 
(Al2O3)(SiO2)1.3-2·2.5-3H2O
Strunz: 
9.ED.20
Crystal System: 
Amorphous
Hardness: 
3.0
Streak: 
White
Type Locality: 
Gräfenthal, Thuringian Forest, Thuringia, Germany

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