Mineralogy Database

Rusakovite Mineral Data

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General Rusakovite Information

Help on Chemical  Formula: Chemical Formula: (Fe+++,Al)5(VO4,PO4)2(OH)9•3(H2O)
Help on Composition: Composition: Molecular Weight = 670.16 gm
   Aluminum     5.03 %  Al    9.51 % Al2O3
   Vanadium    11.40 %  V    20.35 % V2O5
   Iron        31.25 %  Fe   44.68 % Fe2O3
   Phosphorus   2.31 %  P     5.30 % P2O5
   Hydrogen     2.26 %  H    20.16 % H2O
   Oxygen      47.75 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: 5(Fe3+0.75)5(Al0.25)(VO4)1.5(PO4)0.5(OH)9•3(H2O)
Help on Environment: Environment: Found in the oxidized layers of carbonaceous shales with apatite, and Pb, Zn, and Cu sulfides.
Help on IMA Status: IMA Status: Approved IMA 1960
Help on Locality: Locality: Balasauskandyk, Kara Tau, Kazakhstan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Mikhail Petrovich Rusakov (1892-1963), geologist, Kazakhstan, Russia.
Help on Name Pronunciation: Name Pronunciation: Rusakovite + Pronunciation Say RUSAKOVITE

Rusakovite Image

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Comments: Orange-brown rusakovite coatings on dark brown sandstone.
Location: Long Park, Montrose County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rusakovite Crystallography

Help on Crystal System: Crystal System: Monoclinic Space Group: Mono ?
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.21(1), 2.945(0.9), 2.441(0.8),

Physical Properties of Rusakovite

Help on Color: Color: Yellow orange, Reddish yellow.
Help on Density: Density: 2.73 - 2.8, Average = 2.76
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Reniform - "Kidney like" in shape (e.g.. hematite).
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: ochraceous

Optical Properties of Rusakovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3013,KC= 0.3079
Ncalc = 1.84 - 1.86
Help on Optical Data: Optical Data: Biaxial (?), a=1.833

Calculated Properties of Rusakovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.73 gm/cc
note: Specific Gravity of Rusakovite =2.77 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0071426726
Boson Index = 0.9928573274
Help on Photoelectric: Photoelectric: PERusakovite = 11.67 barns/electron
U=PERusakovite x rElectron Density= 31.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rusakovite is Not Radioactive

Rusakovite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.03)where (A)5 (XO4)2 Zq � x(H2O)
  (42.03.01)Dana Group Rusakovite (Fe,Al)5(VO4,PO4)2(OH)9•3(H2O) Mono ? Mono
Help on  Strunz Class: Strunz Class: 08.DF.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.D - Phosphates, etc
  08.DF -With only medium-sized cations, (OH,etc.):RO4 > 3:1
08.DF.15 Rusakovite (Fe,Al)5(VO4,PO4)2(OH)9•3(H2O) Mono ? Mono

Other Rusakovite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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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Dana No: Strunz No: 08.DF.15





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