General Information:
Chemical Formula:
Al2(OH)5Cl·2(H2O)
Composition:
(Molecular Weight = 210.48 gm)
Aluminum 25.64 % Al
Hydrogen 4.31 % H
Chlorine 16.84 % Cl
Oxygen 53.21 % O
Empirical Formula:
Al2(OH)5Cl·2(H2O)
Environment:
The result of interaction of fumarle gases and volcanic rocks at 50 deg C.
IMA Status:
Approved IMA (Dana # Added)
Locality:
The Tolbachik Main Fracture eruption, Kamchatka, Russia.
Name Origin:
Named after Grigorii Ivanovich Lesuke (1935-1995), technical worker in the Department of Crystallography, University of St. Petersburg, Russia.
Physical Properties:
Color:
yellowish orange or yellowish brown.
Density:
1.87
Diaphaniety:
Transparent
Habits:
Aggregates - Made of numerous individual crystals or clusters., Tabular - Form dimensions are thin in one direction.,
Luster:
Vitreous (Glassy)
Streak:
yellowish orange
More details...