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Calcite On Allophane

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SHS122255

Calcite On Allophane

Description Tabs

Description
Locality: 
Reward Mine, Reward, Inyo County, California, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4.8 × 6.8 cm
Description

Calcite crystals on nice allophane

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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