Vauxite (original) (raw)

A valid IMA mineral species - grandfathered

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About VauxiteHide

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Formula:

Fe2+Al2(PO4)2(OH)2 · 6H2O

Colour:

Sky-blue, dark blue; pale blue in transmitted light.

Specific Gravity:

2.39 - 2.4

Name:

Named in honor of George Vaux, Jr. (18 December 1863, Philadelphia, Pennsylvania, USA - 24 October 1927, Bryn Mawr, Pennsylvania, USA), attorney, photographer, and mineral collector of Bryn Mawr, Pennsylvania. He was nephew of mineral collector William S. Vaux (1811-1882). His collection, that reached about 10,000 specimens of 850 species, went to Bryn Mawr College after his death.

A secondary mineral derived from the alteration of apatite.

Compare also the higher hydrate paravauxite and its dimorph metavauxite.
Ferrivauxite is an oxidized equivalent of vauxite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:4164:1

3307ad12-d776-465b-bfbd-e45698a77601

IMA Classification of VauxiteHide

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Approved, 'Grandfathered' (first described prior to 1959)

Classification of VauxiteHide

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8.DC.35

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1

42.11.14.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O

19.14.23

19 : Phosphates
14 : Phosphates of Fe and other metals

Mineral SymbolsHide

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

Symbol Source Reference
Vx IMA–CNMNC Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of VauxiteHide

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Colour:

Sky-blue, dark blue; pale blue in transmitted light.

Density:

2.39 - 2.4 g/cm3 (Measured) 2.4 g/cm3 (Calculated)

Optical Data of VauxiteHide

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RI values:

_n_α = 1.551 _n_β = 1.555 _n_γ = 1.562

δ = 0.011

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Comments:

X = Z = Colourless
Y = Blue

Chemistry of VauxiteHide

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Mindat Formula:

Fe2+Al2(PO4)2(OH)2 · 6H2O

Crystallography of VauxiteHide

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Class (H-M):

1 - Pinacoidal

Cell Parameters:

a = 9.142 Å, b = 11.599 Å, c = 6.158 Å
α = 98.29°, β = 91.93°, γ = 108.27°

Ratio:

a:b:c = 0.788 : 1 : 0.531

Unit Cell V:

611.42 ų (Calculated from Unit Cell)

Morphology:

Crystals tabular {010}, elongated [001] or [101]. May exhibit may forms, including {010}, {110}, {111}, {101}, {111}, {101}, and {140}. Forms radial to subparallel aggregates; nodular.

Twinning:

on {010}, twin and composition plane.

Crystal StructureHide

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ID Species Reference Link Year Locality Pressure (GPa) Temp (K)
0000176 Vauxite Baur W H, Rama Rao B (1968) The crystal structure and the chemical composition of vauxite American Mineralogist 53 1025-1033 1968 0 293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
10.85 Å (100)
5.457 Å (20)
5.908 Å (12)
2.881 Å (12)
2.596 Å (12)
6.069 Å (10)
3.045 Å (10)

Comments:

Llallagua, Bolivia.

Geological EnvironmentHide

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Geological Setting:

Alteration of apatite.

Type Occurrence of VauxiteHide

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Place of Conservation of Type Material:

U.S. National Museum of Natural History, Washington, D.C., USA: #97561, #103542.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Other Language Names for VauxiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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8.DC. Césarferreiraite Fe2+ Fe3+2(AsO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC. Ferrivauxite Fe3+Al2(PO4)2(OH)3 · 5H2O Tric. 1 : _P_1
8.DC. Ianbruceite Zn2(AsO4)(OH) · 3H2O Mon. 2/m : _P_21/b
8.DC.05 Nissonite Cu2Mg2(PO4)2(OH)2 · 5H2O Mon. 2/m : _B_2/b
8.DC.07 Euchroite Cu2(AsO4)(OH) · 3H2O Orth. 222 : _P_212121
8.DC.10 Legrandite Zn2(AsO4)(OH) · H2O Mon. 2/m : _P_21/b
8.DC.12 Strashimirite Cu8(AsO4)4(OH)4 · 5H2O Mon.
8.DC.15 Earlshannonite Mn2+Fe3+2(PO4)2(OH)2 · 4H2O Mon. 2/m : _P_21/b
8.DC.15 Kunatite CuFe3+2(PO4)2(OH)2 · 4H2O Mon. 2/m : _P_21/b
8.DC.15 UM2006-27-PO:FeHZn ZnFe3+2(PO4)2(OH)2 · 4H2O Mon.
8.DC.15 UKI-2006-(PO:AlCuFeH) Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.15 Cobaltarthurite CoFe3+2(AsO4)2(OH)2 · 4H2O Mon. 2/m : _P_21/b
8.DC.15 Arthurite CuFe3+2(AsO4)2(OH)2 · 4H2O Mon. 2/m : _P_21/b
8.DC.15 Ojuelaite ZnFe3+2(AsO4)2(OH)2 · 4H2O Mon. 2/m : _P_21/b
8.DC.15 Whitmoreite Fe2+Fe3+2(PO4)2(OH)2 · 4H2O Mon. 2/m : _P_21/b
8.DC.15 Bendadaite Fe2+Fe3+2(AsO4)2(OH)2 · 4H2O Mon. 2/m : _P_21/b
8.DC.17 Kleemanite ZnAl2(PO4)2(OH)2 · 3H2O Mon.
8.DC.20 Magnesiobermanite MgMn3+2(PO4)2(OH)2 · 4H2O Mon. 2 : _P_21
8.DC.20 Bermanite Mn2+Mn3+2(PO4)2(OH)2 · 4H2O Mon. 2/m : _P_2/b
8.DC.20 Coralloite Mn2+Mn3+2(AsO4)2(OH)2 · 4H2O Tric. 1 : _P_1
8.DC.22 Kovdorskite Mg2(PO4)(OH) · 3H2O Mon. 2/m : _P_21/b
8.DC.25 Zincostrunzite ZnFe3+2(PO4)2(OH)2 · 6.5H2O Tric. 1 : _P_1
8.DC.25 Metavauxite Fe2+Al2(PO4)2(OH)2 · 8H2O Mon. 2/m : _P_21/b
8.DC.25 Metavivianite Fe2+Fe3+2(PO4)2(OH)2 · 6H2O Tric. 1 : _P_1
8.DC.25 Ferristrunzite Fe3+Fe3+2(PO4)2(OH)3 · 5H2O Tric.
8.DC.25 Strunzite Mn2+Fe3+2(PO4)2(OH)2 · 6H2O Tric. 1 : _P_1
8.DC.25 Ferrostrunzite Fe2+Fe3+2(PO4)2(OH)2 · 6H2O Tric.
8.DC.27 Beraunite Fe3+6(PO4)4O(OH)4 · 6H2O Mon. m : B b
8.DC.27 Tvrdýite Fe2+Fe3+2 Al3(PO4)4(OH)5(H2O)4 · 2H2O Mon. 2/m : _B_2/b
8.DC.27 Zincoberaunite ZnFe3+5(PO4)4(OH)5 · 6H2O Mon. 2/m : _B_2/b
8.DC.30 Maghrebite MgAl2(AsO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Ferrolaueite Fe2+Fe3+2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Ushkovite MgFe3+2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Laueite Mn2+Fe3+2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Paravauxite Fe2+Al2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Sigloite Fe3+Al2(PO4)2(OH)3 · 7H2O Tric. 1 : _P_1
8.DC.30 Nordgauite MnAl2(PO4)2(F,OH)2 · 5H2O Tric. 1 : _P_1
8.DC.30 Kayrobertsonite [MnAl2(PO4)2(OH)2(H2O)4] · 2H2O Tric. 1 : _P_1
8.DC.30 Kummerite Mn2+Fe3+Al(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Mangangordonite Mn2+Al2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Stewartite Mn2+Fe3+2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Gordonite MgAl2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Kastningite (Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2O Tric. 1 : _P_1
8.DC.30 Pseudolaueite Mn2+Fe3+2(PO4)2(OH)2 · 8H2O Mon. 2/m : _P_21/b
8.DC.32 Kamarizaite Fe3+3(AsO4)2(OH)3 · 3H2O Tric. 1 : _P_1
8.DC.32 Tinticite Fe3+3(PO4)2(OH)3 · 3H2O Tric. 1 : _P_1
8.DC.37 Vantasselite Al4(PO4)3(OH)3 · 9H2O Orth.
8.DC.40 Cacoxenite Fe3+24AlO6(PO4)17(OH)12 · 75H2O Hex. 6/m : _P_63/m
8.DC.45 Souzalite (Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O Tric. 1
8.DC.45 Gormanite (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O Tric.
8.DC.47 Kingite Al3(PO4)2F2(OH) · 7H2O Tric.
8.DC.50 Allanpringite Fe3+3(PO4)2(OH)3 · 5H2O Mon. 2/m : _P_21/m
8.DC.50 Fluorwavellite Al3(PO4)2(OH)2F · 5H2O Orth. m m m _(_2/_m_2/_m_2/m )
8.DC.50 Wavellite Al3(PO4)2(OH,F)3 · 5H2O Orth. m m m _(_2/_m_2/_m_2/m )
8.DC.52 Kribergite Al5(PO4)3(SO4)(OH)4 · 4H2O Tric. 1 : _P_1
8.DC.55 Mapimite Zn2Fe3+3(AsO4)3(OH)4 · 10H2O Mon. m : B m
8.DC.57 Ogdensburgite Ca2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2O Orth. m m m _(_2/_m_2/_m_2/m ) : C m m m
8.DC.60 Cloncurryite Cu0.5(VO)0.5Al2(PO4)2F2 · 5H2O Mon. 2/m : _P_21/b
8.DC.60 Nevadaite (Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2O Orth. m m m _(_2/_m_2/_m_2/m )
8.DC.62 Kenngottite Mn2+3Fe3+4(PO4)4(OH)6(H2O)2 Mon. 2/m : _P_2/b
8.DC.67 Molinelloite Cu(H2O)(OH)V4+O(V5+O4) Tric. 1 : _P_1
8.DC.70 Whitecapsite H16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2O Hex. 6/m : _P_63/m
8.DC.75 Heimite PbCu2(AsO4)(OH)3 · 2H2O Mon. 2/m
8.DC.80 Lednevite Cu[PO3(OH)] · H2O Mon. 2/m : _P_21/b

Other InformationHide

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Health Risks:

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

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References for VauxiteHide

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Reference List:

**Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.**pp.974-975

Moore, Paul B., Araki, Takaharu, Kampf, Anthony R., Steele, Ian M. (1976) Olmsteadite, K2Fe2+2[Fe2+2(Nb,Ta)5+2O4(H2O)4(PO4)4], a new species, its crystal structure and relation to vauxite and montgomeryite. American Mineralogist, 61 (1-2) 5-11

**Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (2000) Handbook of Mineralogy Vol. 4 - Arsenates, phosphates, vanadates. Mineral Data Publishing, Tucson, Arizona.**p.625

Djordjević, T., Kolitsch, U. and Stojanovic, J. (2011) Crystal structure and hydrogen bonding in vauxite, Fe2+Al2(PO4)2(OH)2•6H2O from Vitlovac locality, Bosnia and Herzegovina. Joint Meeting of the DGK, DMG and ÖMG, Salzburg, Austria, September 20-24, 2011; Abstracts Volume, p. 136.

Ventruti, Gennaro, Schingaro, Emanuela, Monno, Alessandro, Lacalamita, Maria, Della Ventura, Giancarlo, Bellatreccia, Fabio, Cuocci, Corrado, Rossi, Manuela, Capitelli, Francesco (2016) Structure Refinement and Vibrational Spectroscopy of Vauxite From the Type Locality, Llallagua (Bolivia) The Canadian Mineralogist, 54 (1) 163-176 doi:10.3749/canmin.1500060

Localities for VauxiteHide

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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

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- 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.

Argentina
Córdoba Province Punilla Department San Roque District Tanti ⓘ Cerro Blanco pegmatite district Dina (1993)
Bolivia
Oruro Pantaleón Dalence Province ⓘ Huanuni Anthony et al. (2000)
ⓘ Huanuni mine Kempff et al. (La Paz, 2009)
Potosí Rafael Bustillo Province ⓘ Llallagua Gordon (1922)
ⓘ Siglo Veinte Mine (TL) Gordon (1922) +1 other reference
Bosnia and Herzegovina
Republika Srpska Srebrenica ⓘ Srebrenica orefield Radosavljevic et al. (2005)
ⓘ Vitlovac Abstracts Volume +2 other references
Brazil
Goiás Cavalcante ⓘ Buraco do Ouro mine Pires et al. (2020)
Canada
Northwest Territories Fort Norman ⓘ Golden Deposit Battler et al. (2013)
Germany
Bavaria Upper Palatinate Neustadt an der Waldnaab District Waidhaus Reinhardsrieth ⓘ Reinhardsrieth Nb–P aplite Harald G. Dill and Radek Skoda (2015)
Italy
Sardinia Metropolitan City of Cagliari Sarroch ⓘ Balloi Stara et al. (1996)
Spain
Aragon Teruel Castellote ⓘ Ladruñán Bauluz et al. (2014)
Extremadura Cáceres Zarza la Mayor ⓘ La Paloma Mine Calvo Rebollar et al. (2022)
USA
New Hampshire Grafton County Groton ⓘ Fletcher Mine Kreinik (2022)
Pennsylvania Snyder County Perry Township Mount Pleasant Mills Lime Ridge ⓘ National Limestone Quarry No. 2 K. Cabaniss & L.E. Kearns (2011)