Rusakovite Mineral Data (original) (raw)
General Rusakovite Information
Chemical Formula:
(Fe+++,Al)5(VO4,PO4)2(OH)9•3(H2O)
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
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 
Rusakovite Image
Images:
Rusakovite Crystallography
Crystal System:
MonoclinicSpace Group: Mono ?
X Ray Diffraction:
By Intensity(I/Io): 3.21(1), 2.945(0.9), 2.441(0.8),
Physical Properties of Rusakovite
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
Optical Properties of Rusakovite
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
Calculated Properties of Rusakovite
Electron Density:
Bulk Density (Electron Density)=2.73 gm/cc
note: Specific Gravity of Rusakovite =2.77 gm/cc.
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.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rusakovite is Not Radioactive
Rusakovite Classification
Dana Class:
42.03.01.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
(42.03)where (A)5 (XO4)2 Zq � x(H2O)
(42.03.01)Dana Group
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
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
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 :
Rusakovite
(Fe+++,Al)5(VO4,PO4)2(OH)9•3(H2O)
Dana No: 42.03.01.01 Strunz No: 08.DF.15
Locality:
Notes: