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Bariandite

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About BarianditeHide

Formula:
Al0.6(V5+,V4+)8O20 · 9H2O
Colour:
Black to dark green
Specific Gravity:
2.7
Crystal System:
Monoclinic
Name:
Named 1971 by Fabien P. Cesbron and Helene Vachey in honor of Dr. Pierre Bariand [b. May 5, 1933 France], Curator of Mineralogy, University of Paris, Paris, France.
This page provides mineralogical data about Bariandite.


Classification of BarianditeHide

Approved
Approval Year:
1970
4.HE.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
47.3.2.4

47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
7.12.10

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

Physical Properties of BarianditeHide

Transparency:
Opaque
Colour:
Black to dark green
Cleavage:
Perfect
on {001}
Density:
2.7 g/cm3 (Measured)    2.5 g/cm3 (Calculated)

Optical Data of BarianditeHide

Type:
Biaxial
RI values:
n = 1.85
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Colour in reflected light:
Brownish grey
Internal Reflections:
Green
Comments:
In transmitted light: greenish brown parallel to [010], bottle-green perpendicular to [010]

Chemical Properties of BarianditeHide

Formula:
Al0.6(V5+,V4+)8O20 · 9H2O
IMA Formula:
Al0.6(V5+,V4+)8O20 · 9H2O

Crystallography of BarianditeHide

Crystal System:
Monoclinic
Cell Parameters:
a = 11.7 Å, b = 3.63 Å, c = 20.06 Å
β = 101.5°
Ratio:
a:b:c = 3.223 : 1 : 5.526
Unit Cell V:
834.86 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals platy on {001} and elongated parallel to [010], forming fibers, to 3 mm; sheeted aggregates of parallel fibers, sometimes stacked.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
14.20 Å(sss)
3.480 Å(s)
3.430 Å(s)
5.72 Å(ms)
2.852 Å(ms)
1.939 Å(ms)
1.827 Å(ms)
Comments:
From type description.

Geological EnvironmentHide

Geological Setting:
Oxidation zones of uranium or vanadium deposits

Type Occurrence of BarianditeHide

Place of Conservation of Type Material:
National School of Mines, Paris, France;
The Natural History Museum, London, England (No. 1970,151)
Geological Setting of Type Material:
Oxidation zone of a uranium deposit
Associated Minerals at Type Locality:

Synonyms of BarianditeHide

Other Language Names for BarianditeHide

German:Bariandit
Simplified Chinese:巴水钒矿
Spanish:Bariandita
Traditional Chinese:巴水釩礦

Relationship of Bariandite to other SpeciesHide

Other Members of this group:
Bokite(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2OMon.
Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Bariandite associated with LenobliteV4+2O4 · 2H2O
1 photo of Bariandite associated with DuttoniteV4+O(OH)2
1 photo of Bariandite associated with MounanaitePbFe3+2(VO4)2(OH,F)2
1 photo of Bariandite associated with FrancevilliteBa(UO2)2(VO4)2 · 5H2O

Related Minerals - Nickel-Strunz GroupingHide

4.HE.05MelanovanaditeCa(V5+,V4+)4O10 · 5H2OTric. 1 : P1
4.HE.10ShcherbinaiteV5+2O5Orth. mmm (2/m 2/m 2/m) : Pmmn
4.HE.15HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
4.HE.15MetahewettiteCaV6O16 · 3H2OMon. 2/m
4.HE.20Bokite(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2OMon.
4.HE.20Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
4.HE.20Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
4.HE.20Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.
4.HE.25HäggiteV3+V4+O2(OH)3Mon.
4.HE.30DoloresiteV4+3O4(OH)4Mon. 2/m
4.HE.35DuttoniteV4+O(OH)2Mon. 2/m
4.HE.40CavoiteCaV4+3O7Orth. mmm (2/m 2/m 2/m) : Pnma

Related Minerals - Dana Grouping (8th Ed.)Hide

47.3.2.1Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.
47.3.2.2Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
47.3.2.3Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
47.3.2.5Bokite(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2OMon.
47.3.2.6KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

7.12.1Montroseite(V3+,Fe3+)O(OH)Orth.
7.12.2 ScherbinaiteV5+2O5
7.12.3ParamontroseiteV4+O2Orth.
7.12.4HäggiteV3+V4+O2(OH)3Mon.
7.12.5DuttoniteV4+O(OH)2Mon. 2/m
7.12.6DoloresiteV4+3O4(OH)4Mon. 2/m
7.12.7LenobliteV4+2O4 · 2H2OOrth. 2 2 2 : P21 21 21
7.12.8NavajoiteFe3+V5+9O24 · 12H2OMon. 2/m : B2/m
7.12.9VanoxiteV4+4V5+2O13 · 8H2O
7.12.11Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
7.12.12SimplotiteCaV4+4O9 · 5H2OMon.
7.12.13KyzylkumiteV3+Ti2O5(OH)Mon. 2/m : P21/b
7.12.14SchreyeriteV3+2Ti3O9Mon.
7.12.15BerdesinskiiteV3+2TiO5Mon.
7.12.16TivaniteV3+TiO3(OH)Mon.
7.12.17MannarditeBa(Ti4+6V3+2)O16Tet. 4/m : I41/a
7.12.18KarelianiteV3+2O3Trig.
7.12.19CoulsoniteFe2+V3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.12.20NolaniteV3+8Fe3+2O14(OH)2Hex.
7.12.21VuorelaineniteMn2+V3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
7.12.22TantiteTa2O5Tric.
7.12.23Kimrobinsonite(Ta,Nb)(OH)5-2x(O,CO3)x ; x near 1.2Iso.

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.

References for BarianditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cesbron, F. and Vachey, H. (1971): La bariandite, nouvel oxyde hydraté de vanadium (IV) et (V). Bull Soc. fr. Minéral. 94, 49-54 (in French with English abstract). - American Mineralogist (1972) 57, 1555 (abstract).
Evans, Jr., H.T., and Hughes, J.M. (1990): Crystal chemistry of the natural vanadium bronzes. American Mineralogist 75, 508-521.
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 40.

Internet Links for BarianditeHide

Localities for BarianditeHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Gabon (TL)
 
  • Haut-Ogooué Province
    • Franceville
Bull.Soc.fr.Min.Crist.(1971) 94, 49-54
Peru
 
  • Pasco
    • Pasco Province
      • Huayllay District
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 40
USA
 
  • Colorado
    • Montrose Co.
      • Uravan Mining District
Minerals of Colorado (1997) Eckel, E. B.
  • Utah
    • Grand Co.
      • Thompsons Mining District
        • The Poison Strip
Van King
    • San Juan Co.
      • La Sal Mountains
        • La Sal Mining District (Paradox Valley Mining District)
          • La Sal
      • La Sal Quadrangle
Min Rec 33:4 pp351-355; Canadian Mineralogist (2001) 39, pp. 1691-1700
 
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