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Ammonioalunite

#BAC65221
SOLD
Ammonioalunite from Kladno, Bohemia, Czech Republic - BAC65221
Ammonioalunite from Kladno, Bohemia, Czech Republic - BAC65221

Ammonioalunite

#BAC65221
Availability
Sold
Size
1.3 x 1 x 0.4 cm - Thumbnail 
Formula
NH4Al3(SO4)2(OH)6 (RRUFF)
Locality
Kladno, Bohemia, Czech Republic

Ugly creamy brown mass undeserving of IMA status.

Ammonioalunite

Formula
NH4Al3(SO4)2(OH)6 
Crystal System
Trigonal 
Crystal Habit
Efflorescences, Massive - Granular, Rhombohedral Crystals 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
gray white, white 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Hardness
2-3 

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection
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