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Berdesinskiite

A valid IMA mineral species
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00424770017271921406883.jpg
Berdesinskiite, etc.

Lasamba Hill, Kwale County, Kenya
04575490017271921425485.jpg
Berdesinskiite, etc.

Ol'khonskiye Vorota Strait, Irkutsk Oblast, Russia
00424770017271921406883.jpg
Berdesinskiite, etc.

Lasamba Hill, Kwale County, Kenya
04575490017271921425485.jpg
Berdesinskiite, etc.

Ol'khonskiye Vorota Strait, Irkutsk Oblast, Russia
00424770017271921406883.jpg
Berdesinskiite, etc.

Lasamba Hill, Kwale County, Kenya
04575490017271921425485.jpg
Berdesinskiite, etc.

Ol'khonskiye Vorota Strait, Irkutsk Oblast, Russia
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About BerdesinskiiteHide

Formula:
V3+2TiO5
Colour:
Black
Lustre:
Metallic
Hardness:
6 - 6½
Specific Gravity:
4.536 (Calculated)
Crystal System:
Monoclinic
Name:
For Professor Waldemar Berdesinski (1911-1990), crystallographer, University of Heidelberg, Heidelberg, Germany.
Isotypic with Unnamed (Monoclinic polymorph of Pseudobrookite).

A possible Cr analogue is coded as UM1996-17-O:CrFeNbTiV.


Unique IdentifiersHide

Mindat ID:
630
Long-form identifier:
mindat:1:1:630:1

IMA Classification of BerdesinskiiteHide

Classification of BerdesinskiiteHide

Strunz-mindat (2026):
4.CB.30

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
Dana 8th ed.:
7.7.2.1

7 : MULTIPLE OXIDES
7 : AB2X5
Hey's CIM Ref.:
7.12.15

7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference for Standard
BdsIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
BrdThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of BerdesinskiiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Black
Hardness:
6 - 6½ on Mohs scale
Density:
4.536 g/cm3 (Calculated)

Optical Data of BerdesinskiiteHide

Type:
Biaxial
Bireflectance:
Weak
Reflectivity:
WavelengthR1 (%)R2 (%)
400nm16.6% 17.1%
420nm17.1% 17.5%
440nm17.4% 18.0%
460nm17.9% 18.4%
480nm18.3% 18.9%
500nm18.8% 19.4%
520nm19.2% 19.8%
540nm19.5% 20.3%
560nm19.8% 20.8%
580nm20.0% 21.1%
600nm20.3% 21.3%
620nm20.4% 21.4%
640nm20.5% 21.5%
660nm20.6% 21.6%
680nm20.4% 21.6%
700nm20.2% 21.5%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 21.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Reddish brown

Chemistry of BerdesinskiiteHide

Mindat Formula:
V3+2TiO5
Element Weights:
Element% weight
V44.346 %
O34.820 %
Ti20.835 %

Calculated from ideal end-member formula.
V
O
Ti
Elements listed:
O, Ti, V - search for minerals with similar chemistry
Common Impurities:
Al,Cr

Crystallography of BerdesinskiiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 10.11 Å, b = 5.084 Å, c = 7.03 Å
β = 111.46°
Ratio:
a:b:c = 1.989 : 1 : 1.383
Unit Cell V:
336.29 ų (Calculated from Unit Cell)
Z:
4
Comment:
Point Group: 2/m or m.; Space Group: [C2/c or Cc; P21/c; P2/c or P c] (by analogy to synthetic V2TiO5) ·

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0007331BerdesinskiiteArmbruster T, Galuskin E V, Reznitsky L Z, Sklyarov E V (2009) X-ray structural investigation of the oxyvanite (V3O5) - berdesinskiite (V2TiO5) series: V4+ substituting for octahedrally coordinated Ti4+ European Journal of Mineralogy 21 885-8912009Pereval marble quarry, Sludyanka complex, south of Lake Baikal, Russia0293
0007330BerdesinskiiteArmbruster T, Galuskin E V, Reznitsky L Z, Sklyarov E V (2009) X-ray structural investigation of the oxyvanite (V3O5) - berdesinskiite (V2TiO5) series: V4+ substituting for octahedrally coordinated Ti4+ European Journal of Mineralogy 21 885-8912009Pereval marble quarry, Sludyanka complex, south of Lake Baikal, Russia0293
0007329BerdesinskiiteArmbruster T, Galuskin E V, Reznitsky L Z, Sklyarov E V (2009) X-ray structural investigation of the oxyvanite (V3O5) - berdesinskiite (V2TiO5) series: V4+ substituting for octahedrally coordinated Ti4+ European Journal of Mineralogy 21 885-8912009Pereval marble quarry, Sludyanka complex, south of Lake Baikal, Russia0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
53 : Other minerals with taphonomic origins<0.4

Type Occurrence of BerdesinskiiteHide

Type Locality:
ⓘ Lasamba Hill, Kwale County, Kenya
General Appearance of Type Material:
As grains, rarely up to 70 µm, and as rims arouns schreyerite.
Place of Conservation of Type Material:
Universities of Bochum, Hamburg and Heidelberg, Germany;
National Museum of Natural History, Washington, D.C., USA (No. 147362).
Geological Setting of Type Material:
In strongly weathered gneiss with quartzite in a gem kornerupine deposit of Precambrian age.
Associated Minerals at Type Locality:
BiotiteDiopsideEpidoteGraphiteKornerupine
QuartzRutileSchreyeriteTourmaline
Reference:
Bernhardt, H. J., Schmetzer, K., Medenbach, O. (1983) Berdesinskiite, V2TiO5, a new mineral from Kenya and additional data for schreyerite, V2Ti3O9. Neues Jahrbuch für Mineralogie - Monatshefte, 1983. 110-118

Synonyms of BerdesinskiiteHide

Other Language Names for BerdesinskiiteHide

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Berdesinskiite associated with SchreyeriteV3+2Ti4+3O9
1 photo of Berdesinskiite associated with KornerupineMg3Al6(Si,Al,B)5O21(OH)

Related Minerals - Strunz-mindat GroupingHide

4.CB.Magnesiohögbomite-6N12SMg5Al11TiO23(OH)Trig. 3m(32/m) : R3m
4.CB.KidoditeBaMg2Fe16O27Hex. 6/mmm(6/m2/m2/m) : P63/mmc
4.CB.Ferrohögbomite-2N2S[(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2Hex. 6mm : P63mc
4.CB.Zhenruite(MoO3)2 · H2OMon. 2/m : P21/m
4.CB.FuyuaniteMg7Nb6O18(OH)8Trig. 3 : P3
4.CB.VirgilluethiteMoO3 · H2OMon. 2/m : P21/b
4.CB.Pengite(Pb8Sb3+3)Σ11Sb5+9O35Trig. 3m(32/m) : R3m
4.CB.05BrizziiteNaSb5+O3Trig. 3 : R3
4.CB.05TistariteTi3+2O3Trig. 3m(32/m) : R3c
4.CB.05HematiteFe2O3Trig. 3m(32/m) : R3c
4.CB.05EcandrewsiteZnTiO3Trig. 3 : R3
4.CB.05MelanostibiteMn2+2Fe3+Sb5+O6Trig. 3 : R3
4.CB.05'UM1998-11-O-AuHSb'Au+2Sb3+O2(OH)
4.CB.05KarelianiteV3+2O3Trig. 3m(32/m) : R3c
4.CB.05CorundumAl2O3Trig. 3m(32/m) : R3c
4.CB.05EskolaiteCr2O3Trig. 3m(32/m) : R3c
4.CB.05GeikieliteMgTiO3Trig. 3 : R3
4.CB.05AkimotoiteMgSiO3Trig. 3 : R3
4.CB.05'Unnamed (Fe-Cr Oxide)'FeCrO3Trig. 3 : R3
4.CB.05'Auroantimonate'AuSbO3
4.CB.05HemleyiteFe2+SiO3Trig. 3 : R3
4.CB.05IlmeniteFe2+TiO3Trig. 3 : R3
4.CB.05PyrophaniteMn2+TiO3Trig. 3 : R3
4.CB.10Bixbyite-(Fe)(Fe,Mn)2O3Iso.
4.CB.10Bixbyite-(Mn)Mn3+2O3Iso. m3(2/m3) : Ia3
4.CB.10AvicenniteTl3+2O3Iso. m3(2/m3) : Ia3
4.CB.15ArmalcoliteMgTi4+2O5Orth. mmm(2/m2/m2/m)
4.CB.15FerropseudobrookiteFe2+Ti4+2O5Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.15GriffiniteAl2Ti4+O5Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.15Pseudobrookite Group
4.CB.15SassiteTi3+2Ti4+O5Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.15PseudobrookiteFe3+2Ti4+O5Orth. mmm(2/m2/m2/m) : Cmcm
4.CB.20Zincovelesite-6N6SZn3(Fe3+,Mn3+,Al,Ti)8O15(OH)Trig. 3m(32/m) : P3m1
4.CB.20Magnesiohögbomite-2N4S(Mg8.43Fe2+1.57)Σ=10Al22Ti4+2O46(OH)2Hex. 6mm : P63mc
4.CB.20Magnesiobeltrandoite-2N3S(Mg6Al2)(Al18Fe3+2)O38(OH)2 Trig. 3m : P3m1
4.CB.20Zincohögbomite-2N6S[(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2Hex. 6mm : P63mc
4.CB.20Magnesiohögbomite-6N6S[(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6Trig. 3m(32/m) : R3m
4.CB.20Magnesiohögbomite-2N3S[(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2Trig. 3m(32/m) : P31m
4.CB.20Magnesiohögbomite-2N2S[(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2Hex. 6mm : P63mc
4.CB.20'Ferrohögbomite-6N12S'[(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6Trig. 3m(32/m) : R3m
4.CB.20Zincohögbomite-2N2S[(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2Hex. 6mm : P63mc
4.CB.25KleberiteFeTi6O11(OH)5Mon. 2/m : P21/b
4.CB.25PseudorutileFe3+2Ti4+3O9Hex. 622 : P6322
4.CB.30OxyvaniteV3+2V4+O5Mon. 2/m : B2/b
4.CB.30KaitianiteTi3+2Ti4+O5Mon. 2/m : B2/b
4.CB.35MachiiteAl2Ti3O9Mon. 2/m : B2/b
4.CB.35Vestaite(Ti4+Fe2+)Ti4+3O9Mon. 2/m : B2/b
4.CB.35Olkhonskite(Cr,V)2Ti3O9Mon.
4.CB.35SchreyeriteV3+2Ti4+3O9Mon. 2/m : B2/b
4.CB.40Zincorinmanite-(Zn)Zn2Sb2(Fe3+4Zn2)O14(OH)2Hex. 6mm : P63mc
4.CB.40MajindeiteMg2Mo3O8Hex. 6mm : P63mc
4.CB.40AlmagreraiteCuZnMn4+3O8Orth. mm2 : Pmn21
4.CB.40KamiokiteFe2Mo3O8Hex. 6mm : P63mc
4.CB.40NolaniteV3+8Fe3+2O14(OH)2Hex. 6mm : P63mc
4.CB.40IseiteMn2Mo3O8Hex. 6mm : P63mc
4.CB.40RinmaniteZn2Sb2Mg2Fe4O14(OH)2Hex. 6 : P63
4.CB.45StibioclaudetiteAsSbO3Mon. 2/m : P21/m
4.CB.45ClaudetiteAs2O3Mon. 2/m
4.CB.50SenarmontiteSb2O3Iso. m3m(4/m32/m) : Fd3m
4.CB.50ArsenoliteAs2O3Iso. m3m(4/m32/m) : Fd3m
4.CB.55ValentiniteSb2O3Orth. mmm(2/m2/m2/m) : Pccn
4.CB.60BismiteBi2O3Mon. 2/m : P21/b
4.CB.65SphaerobismoiteBi2O3Tet.
4.CB.70SilléniteBi12SiO20Iso. 23 : I23
4.CB.75KyzylkumiteV3+Ti2O5(OH)Mon. 2/m : P21/b
4.CB.80'Tietaiyangite'Fe3+4Fe2+TiO9Hex.
4.CB.85LiuiteFeTiO3Orth. mmm(2/m2/m2/m) : Pnma
4.CB.90LuogufengiteFe2O3Orth. mm2 : Pna21
4.CB.95WangdaodeiteFeTiO3Trig. 3m : R3c

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for BerdesinskiiteHide

References for BerdesinskiiteHide

Reference List:
Bernhardt, H.J., Schmetzer, K., Medenbach, O. (1981) Berdesinskiit, V2TiO5, ein neues Mineral. Zeitschrift der Deutschen Gemmological Geologischen, 30, 143-145.
Fleischer, M., Cabri, L.J., Chao, G.Y., Mandarino, J.A., Pabst, A. (1982) New mineral names. American Mineralogist: 67: 1074-1082.
Bernhardt, H. J., Schmetzer, K., Medenbach, O. (1983) Berdesinskiite, V2TiO5, a new mineral from Kenya and additional data for schreyerite, V2Ti3O9. Neues Jahrbuch für Mineralogie - Monatshefte, 1983. 110-118
Dunn, P.J.; Grice, J.D.; Fleischer, M.; Pabst, A. (1983) New mineral names. American Mineralogist, 68 (9-10). 1038-1041
Bernhardt, H. J., Schmetzer, K., Medenbach, O. (1983) Berdesinskiite, V2TiO5, a new mineral from Kenya and additional data for schreyerite, V2Ti3O9. Neues Jahrbuch für Mineralogie - Monatshefte, 1983. 110-118
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 52.
Kolitsch, U. and Tillmanns, E. (2004): Does metastable monoclinic Sc2TiO5 exist? Insights from the crystal structures of berdesinskiite (V2TiO5) and unnamed natural monoclinic Fe2TiO5. 32nd International Geological Congress, Florence, Italy, August 20-28, 2004; Abstracts Vol., Pt. 1, abs. 42-3, 215.
(2005) Berdesinskiite. Handbook of Mineralogy. Mineralogical Society of America
Armbruster, T., Galuskin, E.V., Reznitsky, L.Z., Sklyarov, E.V. (2009) X-ray structural investigation of the oxyvanite (V3O5) - berdesinskiite (V2TiO5) series: V4+ substituting for octahedrally coordinated Ti4+. European Journal of Mineralogy, 21, 885-891.
Reznitsky L. Z.; Sklyarov E. V.; Armbruster, T.; Ushchapovskaya, Z. F.; Galuskin E. V.; Polekhovsky Yu. S.; G., Barash I. (2009) Новый минерал оксиванит V3O5 и изоморфный ряд оксиванит-бердесинскит V2TiO5 в метаморфических породах слюдянского комплекса (Южное Прибайкалье) [The new mineral oxyvanite V3O5 and the oxyvanite-berdesinskiite V2TiO5 isomorphic join in metamorphic rocks of Sludyanka complex (South Baikal region)]. Записки Российского Минералогического Общества [Zapiski RMO (Proceedings of the Russian Mineralogical Society)], 138 (3). 70-81

Localities for BerdesinskiiteHide

Showing 8 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Finland
 
  • North Ostrobothnia
    • Raahe
Sergeeva et al. (2011, February) +1 other reference
Kenya (TL)
 
  • Kwale County
Bernhardt et al. (1983)
Madagascar
 
  • Atsimo-Andrefana
    • Ampanihy District
      • Fotadrevo Commune
Di Cecco (2013)
Di Cecco (2013)
Russia
 
  • Irkutsk Oblast
Pekov (1998)
    • Slyudyansky District
      • Slyudyanka
Proceedings of the Russian Mineralogical Society 136 (5) +2 other references
Spain
 
  • Catalonia
    • Tarragona
      • Conca de Barberà
        • Vimbodí i Poblet
Canet et al. (2003)
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