Ungemachite

n. ungemachite (Minerals)

General Information:
 Chemical Formula:
K3Na8Fe+++(SO4)6(NO3)2·6(H2O)
 Composition:
(Molecular Weight = 1,109.70 gm)
Potassium 10.57 % K 
Sodium 16.57 % Na
Hydrogen 1.09 % H 
Sulfur 17.34 % S 
Nitrogen 2.52 % N 
Oxygen 51.90 % O 
 Empirical Formula:
K3Na8(SO4)6(NO3)2·6(H2O)
 Locality:
Chuquicamata, Antofagasta, Chile.
 Name Origin:
Named for Henri-Leon Ungemach (1880-1936), Belgian crystallographer.
Physical Properties:
 Cleavage:
[0001] Perfect
 Color:
colorless or light yellow.
 Density:
2.287
 Diaphaniety:
Transparent
 Habits:
Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals., ,
 Hardness:
2.5 - Finger Nail
 Luster:
Vitreous (Glassy)
 Streak:
white
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