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Allophane

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SLN729588

Allophane

Description Tabs

Description
Locality: 
Monte Copello-Reppia Prospect, Reppia, Genoa Province, Liguria, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.6 × 6.3 × 3.2 cm
Weight: 
30.00gr
Description

Very nice and aesthetic specimen from Monte Copello mine of allophane in balls of a wonderful intense sky blue color in graduated shading.

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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