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Barnesite

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Formula:
(Na,Ca)V6O16 · 3H2O
Colour:
Brilliant dark red; brownish red on exposure
Lustre:
Adamantine
Hardness:
3
Specific Gravity:
3.09 - 3.15
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of William Howard Barnes (1903-1980), Canadian physicist and crystallographer, McGill University, Montreal (1924-1946), Head of X-ray Diffraction Section, Division of Physics, National Research Council of Canada, Ottawa (1947-1968), a major contributor to the knowledge of the crystal chemistry and crystal structures of vanadium minerals.
For obituary see http://journals.iucr.org/a/issues/1981/02/00/a19646/a19646.pdf
This page provides mineralogical data about Barnesite.


Hide all sections | Show all sections

Classification of BarnesiteHide

Approved
4.HG.45

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
G : Unclassified V oxides
47.3.1.3

47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
21.1.3

21 : Vanadates (and vanadates with arsenate or phosphate)
1 : Vanadates of the alkalis and Cu

Pronounciation of BarnesiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of BarnesiteHide

Adamantine
Transparency:
Translucent
Colour:
Brilliant dark red; brownish red on exposure
Hardness:
Tenacity:
Fragile
Cleavage:
Perfect
on {001}, fair on {100} and {010}
Density:
3.09 - 3.15 g/cm3 (Measured)    3.23 g/cm3 (Calculated)

Optical Data of BarnesiteHide

Type:
Biaxial (-)
RI values:
nα = 1.797 - 1.800 nβ = 2.010 - 2.040 nγ = 2.040 - 2.080
2V:
Measured: 60°
Max Birefringence:
δ = 0.243 - 0.280
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r << v
Pleochroism:
Strong
Comments:
X = yellow, Y = yellow-orange, Z = red; Orientation: Y = a, Z = b, X vs. c = 5°

Chemical Properties of BarnesiteHide

Formula:
(Na,Ca)V6O16 · 3H2O
IMA Formula:
Na2V5+6O16 · 3H2O
Common Impurities:
Ca

Crystallography of BarnesiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/m
Cell Parameters:
a = 12.17 Å, b = 3.602 Å, c = 7.78 Å
β = 95.03°
Ratio:
a:b:c = 3.379 : 1 : 2.16
Unit Cell V:
339.73 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Subparallel to radiating aggregates of bladed to fibrous crystals, elongated along [010], to 0.5 mm; also as botryoidal to velvety coatings.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.2 (25)
7.90 (100)
3.45 (35)
3.12 (70)
2.92 (18)
2.27 (25)
1.800 (25)
Comments:
Recorded on type material

Type Occurrence of BarnesiteHide

Geological Setting of Type Material:
In small cavities and fractures and as interstitial filling in sandstone in the oxidized zone of a vanadiferous uranium deposit
Associated Minerals at Type Locality:

Other Language Names for BarnesiteHide

German:Barnesit
Spanish:Barnesita

Relationship of Barnesite to other SpeciesHide

Member of:
Other Members of this group:
Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2OMon.
Hendersonite(Ca,Sr)1.3V6O16 · 6H2OOrth.
HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
MetahewettiteCaV6O16 · 3H2OMon. 2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Steigerite1 photo of Barnesite associated with Steigerite on mindat.org.
Unnamed (Ni Vanadate)1 photo of Barnesite associated with Unnamed (Ni Vanadate) on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

4.HG.CalciodelrioiteCa(VO3)2·4H2O Mon. 2/m : B2/b
4.HG.05FervaniteFe3+4V5+4O16 · 5H2OMon.
4.HG.10HuemuliteNa4Mg(V10O28) · 24H2OTric.
4.HG.15VanaliteNaAl8V10O38 · 30H2OMon.
4.HG.20SimplotiteCaV4+4O9 · 5H2OMon.
4.HG.25VanoxiteV4+4V5+2O13 · 8H2O
4.HG.30NavajoiteFe3+V5+9O24 · 12H2OMon. 2/m : B2/m
4.HG.35DelrioiteCaSr(V2O6)(OH)2 · 3H2OMon.
4.HG.40MetadelrioiteCaSr(V2O6)(OH)2Tric.
4.HG.50Hendersonite(Ca,Sr)1.3V6O16 · 6H2OOrth.
4.HG.55Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2OMon.
4.HG.60LenobliteV4+2O4 · 2H2OOrth. 2 2 2 : P21 21 21
4.HG.65SatpaeviteAl12V4+2V5+6O37 · 30H2O

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

47.3.1.1HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
47.3.1.2MetahewettiteCaV6O16 · 3H2OMon. 2/m
47.3.1.4Hendersonite(Ca,Sr)1.3V6O16 · 6H2OOrth.
47.3.1.5Grantsite(Na,Ca)2+x(V5+,V4+)6O16 · 4H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

21.1.1MetamuniriteNaVO3Orth.
21.1.2MuniriteNaVO3 · 1.9H2OMon.
21.1.4Bannermanite(Na,K)0.7V4+0.7V5+5.3O15Mon. 2/m : B2/m
21.1.5HowardevansiteNaCuFe2(VO4)3Tric. 1 : P1
21.1.6HuemuliteNa4Mg(V10O28) · 24H2OTric.
21.1.7Blossiteα-Cu2(V2O7)Orth. mm2 : Fdd2
21.1.8Ziesiteβ-Cu2(V2O7)Mon.
21.1.9StoiberiteCu5(VO4)2O2Mon.
21.1.10McbirneyiteCu3(VO4)2Tric.
21.1.11FingeriteCu11(VO4)6O2Tric. 1 : P1
21.1.12VolborthiteCu3(V2O7)(OH)2 · 2H2OMon. 2/m : B2/m
21.1.13TangeiteCaCu(VO4)(OH)Orth. 2 2 2 : P21 21 21
21.1.14VésigniéiteBaCu3(VO4)2(OH)2Mon. 2/m : B2/m
21.1.15LyonsiteCu3Fe4(VO4)6Orth.

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 BarnesiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Weeks, A. D., Ross, D. R. and Marvin, R. F. (1963): The occurrence and properties of barnesite, Na2V6O16.3H2O, a new hydrated sodium vanadate mineral from Utah. American Mineralogist 48, 1187-1195.
Evans, H. T., Jr. and Hughes, J. M. (1990): Crystal chemistry of the natural vanadium bronzes. American Mineralogist 75, 508-521, esp. 514-515.
Akinovich, E. A. and Podlipaeva, N. I. (1986): A Ca-variety of barnesite from rocks of a carbonaceous-siliceous vanadium-bearing formation in southern Kazakhstan. Zap. Vses. Mineral. Obshch. 115, 345-351.
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 43

Internet Links for BarnesiteHide

Localities for BarnesiteHide

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.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District slag localities
        • Agios Konstantinos [St Constantine] (Kamariza)
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (II). Mineralien-Welt 25 (2), 82-95 (in German).; Koshlyakova, N.N., Zubkova, N.V., Pekov, I.V., Giester, G., Pushcharovsky, D.Yu., Chukanov, N.V., Voudouris, P., Magganas, A., Katerinopoulos, A. (2016): Crystal chemistry of a Ni-Mg-analogue of lyonsite from slags of Lavrion, Greece. Neues Jahrbuch für Mineralogie - Abhandlungen: Journal of Mineralogy and Geochemistry 193, 113-120.
Italy
 
  • Liguria
    • Genova Province
      • Ne
        • Graveglia Valley
Bittarello, E., Armellino, G., Ambrino, P., Ciriotti, M.E. (2013): Barnesite: primo ritrovamento europeo. Micro, 11, 98-105.
Kazakhstan
 
  • Southern Kazakhstan Province (Ongtüstik Qazaqstan Oblysy; Yuzhno-Kazakhstanskaya Oblast')
    • Karatau Range
      • Aksumbe
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 43
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 43
USA
 
  • Colorado
    • Mesa Co.
      • Uravan District
Minerals of Colorado (1997) Eckels, E. B.
    • Montrose Co.
      • Uravan District
        • Bull Canyon
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
        • Paradox Valley
Minerals of Colorado (1997) Eckels, E. B.
Minerals of Colorado (1997) Eckels, E. B.
  • Nevada
    • Eureka Co.
      • Gibellini District
NBMG Spec. Pub. 31 Minerals of Nevada
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 43
  • New Mexico
    • Cibola Co.
      • Grants District
Northrup, Minerals of New Mexico, 3rd Rev. Ed., 1996
    • McKinley Co.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
  • Utah
    • Grand Co.
      • Thompsons District (S. E. Thomsons)
        • The Poison Strip
WEEKS, A.D., ROSS, D.R. & MARVIN, R.F. (1963): The occurrence and properties of barnesite, Na2V6O163H2O, a new hydrated sodium vanadate mineral from Utah. American Mineralogist 48, 1187-1195. EVANS, H.T. & HUGHES, J.M. (1990): Crystal chemistry of the natural vanadium bronzes. American Mineralogist 75, 508-521.
    • San Juan Co.
      • La Sal District (Paradox Valley District)
        • La Sal
collection Leon Hupperichs
Mineral and/or Locality  
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