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Allophane

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NSS216369

Allophane

Description Tabs

Description
Locality: 
Reppia, Ne, Graveglia Valley, Genova Province, Liguria, Italy
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 1.5 cm
Description

Amorphous allophane with beautiful color

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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