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Allophane

#65471
SOLD
Allophane from Tombstone dist., Cochise Co., Arizona, United States - 65471
Allophane from Tombstone dist., Cochise Co., Arizona, United States - 65471

Allophane

#65471
Availability
Sold
Size
2.5 x 1.7 x 1.8 cm - Thumbnail 
Formula
Al2O3(SiO2)1.3-2.0·2.5-3.0H2O (RRUFF)
Locality
Tombstone dist., Cochise Co., Arizona, United States

Sky blue "bubbly" groups to 0.75mm.

Allophane

Formula
Al2O3(SiO2)1.3-2.0·2.5-3.0H2O 
Crystal System
No Crystals 
Crystal Habit
Encrustations, Stalactitic, Botryoidal 
Cleavage
None, None, None 
Luster
Waxy 
Color
white, green, blue, yellow, brown 
Streak
white 
Class
Amorphous - No Crystals 
Fracture
Conchoidal 
Hardness
3 

Data courtesy of Webmineral.

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