Mineralogy Database

Lazarenkoite Mineral Data

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General Lazarenkoite Information

Help on Chemical  Formula: Chemical Formula: CaFe++As+++3O7•3(H2O)
Help on Composition: Composition: Molecular Weight = 486.73 gm
   Calcium    8.23 %  Ca   11.52 % CaO
   Iron      11.47 %  Fe   14.76 % FeO
   Arsenic   46.18 %  As   60.97 % As2O3
   Hydrogen   1.24 %  H    11.10 % H2O
   Oxygen    32.87 %  O
            ______        ______ 
            100.00 %       98.36 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaFe2+As3O7•3(H2O)
Help on Environment: Environment: Oxidation product on skutterudite-loellingite ores.
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Western Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Eugeni Konstatinovich Lazarenko (1912-1979), mineralogist, academician, Academy of Science, Ukraine.
Help on Name Pronunciation: Name Pronunciation: Lazarenkoite + Pronunciation Say LAZARENKOITE

Lazarenkoite Image

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Comments: Orange, fibrous lazarenkoite in a vug.
Location: Khovu-Asky Ni-Co Deposit, Tuva Republic, Eastern-Siberian Region, Russia. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Lazarenkoite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.7246:1:0.6645
Help on Cell Dimensions: Cell Dimensions: a = 21.8, b = 12.64, c = 8.4, Z = 10; V = 2,314.64 Den(Calc)= 3.49
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.4(1), 4.66(0.9), 11.2(0.9),

Physical Properties of Lazarenkoite

Help on Color: Color: Light orange.
Help on Density: Density: 3.45
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 1 - Talc
Help on Luster: Luster: Resinous
Help on Streak: Streak: light yellow

Optical Properties of Lazarenkoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.118 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.105 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2574,KPDmeas= 0.2604,KC= 0.233
Ncalc = 1.8 - 1.81
Help on Optical Data: Optical Data: Biaxial (-), a=1.82, b=1.92, g=1.955, bire=0.1350, 2V(Calc)=58, 2V(Meas)=30.
Help on Pleochroism (x): Pleochroism (x): pale yellow.
Help on Pleochroism (y): Pleochroism (y): pale brown.
Help on Pleochroism (z): Pleochroism (z): rose brown.

Calculated Properties of Lazarenkoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Lazarenkoite =3.49 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0027032689
Boson Index = 0.9972967311
Help on Photoelectric: Photoelectric: PELazarenkoite = 36.07 barns/electron
U=PELazarenkoite x rElectron Density= 119.49 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lazarenkoite is Not Radioactive

Lazarenkoite Classification

Help on  Dana Class: Dana Class: (07)Multiple Oxides
  (07.08)where A B (O)2�x(H2O)
  (07.08.03)Dana Group Lazarenkoite CaFeAs3O7•3(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 04.JC.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JC -Arsenites, antimonites, bismuthites; without additional anions, with H2O
04.JC.10 Lazarenkoite CaFeAs3O7•3(H2O) Unk Ortho

Other Lazarenkoite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Lazarenkoite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 04.JC.10





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