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Rusakovite Mineral Data
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General Rusakovite Information
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 Chemical Formula: |
(Fe+++,Al)5(VO4,PO4)2(OH)9•3(H2O) |
| Composition: |
Molecular Weight = 670.16 gm |
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Aluminum 5.03 % Al 9.51 % Al2O3 |
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Vanadium 11.40 % V 20.35 % V2O5 |
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Iron 31.25 % Fe 44.68 % Fe2O3 |
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Phosphorus 2.31 % P 5.30 % P2O5 |
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Hydrogen 2.26 % H 20.16 % H2O |
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Oxygen 47.75 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
5(Fe3+0.75)5(Al0.25)(VO4)1.5(PO4)0.5(OH)9•3(H2O) |
| Environment: |
Found in the oxidized layers of carbonaceous shales with apatite, and Pb, Zn, and Cu sulfides. |
| IMA Status: |
Approved IMA 1960 |
| Locality: |
Balasauskandyk, Kara Tau, Kazakhstan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Mikhail Petrovich Rusakov (1892-1963), geologist, Kazakhstan, Russia. |
| Name Pronunciation: |
Rusakovite + Pronunciation  |
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Rusakovite Image |
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Images:
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Rusakovite Crystallography
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| Crystal System: |
Monoclinic Space Group: Mono ? |
| X Ray Diffraction: |
By Intensity(I/Io): 3.21(1), 2.945(0.9), 2.441(0.8), |
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Physical Properties of Rusakovite
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| Color: |
Yellow orange, Reddish yellow. |
| Density: |
2.73 - 2.8, Average = 2.76 |
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. |
| Habit: |
Reniform - "Kidney like" in shape (e.g.. hematite). |
| Hardness: |
1.5-2 - Talc-Gypsum |
| Luster: |
Earthy (Dull) |
| Streak: |
ochraceous |
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Optical Properties of Rusakovite
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| Gladstone-Dale: |
CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3013,KC= 0.3079
Ncalc = 1.84 - 1.86 |
| Optical Data: |
Biaxial (?), a=1.833 |
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Calculated Properties of Rusakovite
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| Electron Density: |
Bulk Density (Electron Density)=2.73 gm/cc
note: Specific Gravity of Rusakovite =2.77 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0071426726
Boson Index = 0.9928573274 |
| Photoelectric: |
PERusakovite = 11.67 barns/electron
U=PERusakovite x rElectron Density= 31.85 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rusakovite is Not Radioactive |
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Rusakovite Classification
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| Dana Class: |
42.03.01.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.03)where (A)5 (XO4)2 Zq � x(H2O) |
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(42.03.01)Dana Group |
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42.03.01.01 Rusakovite (Fe,Al)5(VO4,PO4)2(OH)9•3(H2O) Mono ? Mono |
| Strunz Class: |
08.DF.15 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.D - Phosphates, etc |
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08.DF -With only medium-sized cations, (OH,etc.):RO4 > 3:1 |
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08.DF.15 Rusakovite (Fe,Al)5(VO4,PO4)2(OH)9•3(H2O) Mono ? Mono |
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Other Rusakovite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Rusakovite :
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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Print or Cut-and-Paste your Rusakovite Specimen Label here :
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Rusakovite
(Fe+++,Al)5(VO4,PO4)2(OH)9•3(H2O)
Dana No: 42.03.01.01 Strunz No: 08.DF.15
Locality:
Notes:
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