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Berdesinskiite Mineral Data
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General Berdesinskiite Information
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 Chemical Formula: |
V+++2TiO5 |
| Composition: |
Molecular Weight = 229.76 gm |
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Titanium 20.84 % Ti 34.77 % TiO2 |
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Vanadium 44.34 % V 65.23 % V2O3 |
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Oxygen 34.82 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
V3+2TiO5 |
| Environment: |
Weathered gneiss with kornerupine, schreyerite and tourmaline. |
| IMA Status: |
Approved IMA 1981 |
| Locality: |
Lasamba Hill, Kwale district, Voi, Kenya. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Waldemar Berdesinski (1911-1990), German mineralogist, University of Heidelberg. |
| Name Pronunciation: |
Berdesinskiite + Pronunciation  |
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Berdesinskiite Crystallography
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| Axial Ratios: |
a:b:c =1.9885:1:1.3827 |
| Cell Dimensions: |
a = 10.11, b = 5.084, c = 7.03, Z = 4; beta = 111.46° V = 336.29 Den(Calc)= 4.54 |
| Crystal System: |
Monoclinic Space Group: P 2/c or Pc |
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Physical Properties of Berdesinskiite
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| Color: |
Black, Reddish brown. |
| Diaphaneity: |
Opaque |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Hardness: |
6-6.5 - Orthoclase-Pyrite |
| Luster: |
Metallic |
| Streak: |
black |
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Optical Properties of Berdesinskiite
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| Optical Data: |
Biaxial (?) |
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NCalc= 2.45 - from Gladstone-Dale relationship (KC = 0.3186) where Ncalc=Dcalc*KC+1
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| RL Bireflectance: |
Weak. |
| RL Color: |
Reddish brown. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Berdesinskiite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
16.60 |
17.10 |
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| 420 nm |
17.10 |
17.50 |
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| 440 nm |
17.40 |
18.00 |
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| 460 nm |
17.90 |
18.40 |
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| 480 nm |
18.30 |
18.90 |
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| 500 nm |
18.80 |
19.40 |
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| 520 nm |
19.20 |
19.80 |
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| 540 nm |
19.50 |
20.30 |
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| 560 nm |
19.80 |
20.80 |
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| 580 nm |
20.00 |
21.10 |
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| 600 nm |
20.30 |
21.30 |
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| 620 nm |
20.40 |
21.40 |
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| 640 nm |
20.50 |
21.50 |
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| 660 nm |
20.60 |
21.60 |
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| 680 nm |
20.40 |
21.60 |
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| 700 nm |
20.20 |
21.50 |
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Calculated Relative Intensity Colors of Berdesinskiite in Air
Relative
Intensity |
0% |
50% |
100% |
150% |
200% |
250% |
300% |
350% |
400% |
450% |
500% |
| R1 |
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| R2 |
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Calculated Properties of Berdesinskiite
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| Electron Density: |
Bulk Density (Electron Density)=4.27 gm/cc
note: Specific Gravity of Berdesinskiite =4.54 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEBerdesinskiite = 12.13 barns/electron
U=PEBerdesinskiite x rElectron Density= 51.78 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Berdesinskiite is Not Radioactive |
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Berdesinskiite Classification
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| Dana Class: |
07.07.02.01 (07)Multiple Oxides |
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(07.07)with miscellaneous formulae |
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(07.07.02)Dana Group |
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07.07.02.01 Berdesinskiite V2TiO5 P 2/c or Pc Mono |
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07.07.02.02 Oxyvanite! V3O5 C 2/c 2/m |
| Strunz Class: |
04.CB.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.C - Metal:Oxygen = 2:3, 3:5, and Similar |
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04.CB -With medium-sized cations |
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04.CB.30 Berdesinskiite V2TiO5 P 2/c or Pc Mono |
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04.CB.30 Oxyvanite! V3O5 C 2/c 2/m |
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Other Berdesinskiite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic3) |
| See Also: |
Links to other databases for Berdesinskiite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
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Print or Cut-and-Paste your Berdesinskiite Specimen Label here :
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Berdesinskiite
V+++2TiO5
Dana No: 07.07.02.01 Strunz No: 04.CB.30
Locality:
Notes:
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