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Allophane & Malachite

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TPX536893

Allophane & Malachite

New Discovery

Description Tabs

Description
Locality: 
Cala Mines, Cala, Huelva, Andalusia, Spain
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 4.5 × 3 cm
Weight: 
36.00gr
Description

Very nice sample of blue allophane and malachite crystals from a new discovery in this closed Spanish mine.

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

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

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