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 %
NaHydrogen 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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