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
More details...