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General Lazarenkoite Information |
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 Chemical Formula: |
CaFe++As+++3O7•3(H2O) | ||
| 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 | |||
| Empirical Formula: |
CaFe2+As3O7•3(H2O) | ||
| Environment: |
Oxidation product on skutterudite-loellingite ores. | ||
| IMA Status: |
Approved IMA 1981 | ||
| Locality: |
Western Siberia, Russia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Eugeni Konstatinovich Lazarenko (1912-1979), mineralogist, academician, Academy of Science, Ukraine. | ||
| Name Pronunciation: |
Lazarenkoite + Pronunciation  |
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Lazarenkoite Image | |||
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Images:
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Lazarenkoite Crystallography |
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| Axial Ratios: |
a:b:c =1.7246:1:0.6645 | ||
| Cell Dimensions: |
a = 21.8, b = 12.64, c = 8.4, Z = 10; V = 2,314.64 Den(Calc)= 3.49 | ||
| Crystal System: |
OrthorhombicSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 8.4(1), 4.66(0.9), 11.2(0.9), | ||
Physical Properties of Lazarenkoite |
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| Color: |
Light orange. | ||
| Density: |
3.45 | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Habit: |
Fibrous - Crystals made up of fibers. | ||
| Hardness: |
1 - Talc | ||
| Luster: |
Resinous | ||
| Streak: |
light yellow | ||
Optical Properties of Lazarenkoite |
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| 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 |
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| Optical Data: |
Biaxial (-), a=1.82, b=1.92, g=1.955, bire=0.1350, 2V(Calc)=58, 2V(Meas)=30. | ||
| Pleochroism (x): |
pale yellow. | ||
| Pleochroism (y): |
pale brown. | ||
| Pleochroism (z): |
rose brown. | ||
Calculated Properties of Lazarenkoite |
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| Electron Density: |
Bulk Density (Electron Density)=3.31 gm/cc note: Specific Gravity of Lazarenkoite =3.49 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.0027032689 Boson Index = 0.9972967311 |
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| Photoelectric: |
PELazarenkoite = 36.07 barns/electron U=PELazarenkoite x rElectron Density= 119.49 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lazarenkoite is Not Radioactive |
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Lazarenkoite Classification |
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| Dana Class: |
07.08.03.01 (07)Multiple Oxides | ||
| (07.08)where A B (O)2·x(H2O) | |||
| (07.08.03)Dana Group | |||
| 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 | |||
Other Lazarenkoite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | ||
| 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 Search for Lazarenkoite using: Visit our Advertisers for Lazarenkoite : A Bijoux Google Search for LazarenkoiteAdam's Minerals Google Search for Lazarenkoite Cape Minerals Google Search for Lazarenkoite Dakota Matrix Minerals Google Search for Lazarenkoite Excalibur Mineral Corp. Google Search for Lazarenkoite Exceptional Minerals Google Search for Lazarenkoite John Betts Fine Minerals Search for Lazarenkoite McDougall Minerals Google Search for Lazarenkoite Mineral News Website Link Rock and Mineral Shows Google Search for Lazarenkoite Weinrich Minerals, Inc. Google Search for Lazarenkoite Ask about Lazarenkoite here : Print or Cut-and-Paste your Lazarenkoite Specimen Label here :
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