General Information:
Chemical Formula:
CaFe++As+++3O7·3(H2O)
Composition:
(Molecular Weight = 486.73 gm)
Calcium 8.23 % Ca
Iron 11.47 % Fe
Arsenic 46.18 % As
Hydrogen 1.24 % H
Oxygen 32.87 % O
Empirical Formula:
CaFe2+As3O7·3(H2O)
Environment:
Oxidation product on skutterudite-loellingite ores.
IMA Status:
Approved IMA 1981
Locality:
Western Siberia, Russia.
Name Origin:
Named for Eugeni Konstatinovich Lazarenko (1912-1979), meralogist, academician, Academy of Science, Ukraine.
Physical Properties:
Color:
light orange.
Density:
3.45
Habits:
Fibrous - Crystals made up of fibers., Encrustations - Forms crust-like aggregates on matrix.,
Hardness:
1 - Talc
Luster:
Resinous
Streak:
light yellow
More details...