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Alumino Adamite & Allophane

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SHS784732

Alumino Adamite & Allophane

Description Tabs

Description
Locality: 
Lavrion District Mines, Attiki Prefecture, Greece
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.8 × 0.8 cm
Description

Blue alumino adamite on allophane

Mineral Data
What's on the rock

Alumino Adamite

Variety Of: 

Adamite

Formula: 
Zn2(AsO4)(OH)
Strunz: 
8.BB.30
Hardness: 
3.5
Formula: 
(Zn,Al)2AsO4(OH)
Hardness: 
0.0

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