Lazarenkoite

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
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