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Allophane

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SLN182007

Allophane

Description Tabs

Description
Locality: 
Monte Copello-Reppia Prospect, Reppia, Genoa Province, Liguria, Italy
Size Range: 
Cabinet (10-18 cm)
Size: 
6.7 × 10.3 × 10.1 cm
Description

Very nice specimen with a lot of beautiful sky-blue small balls in graduated shading of allophane standed against the matrix forming a soft carpet.

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

Seller Information

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