Metavauxite (original) (raw)
A valid IMA mineral species - grandfathered
About MetavauxiteHide
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Formula:
Fe2+Al2(PO4)2(OH)2 · 8H2O
Colour:
Colourless, white, light green; colourless in transmitted light.
Lustre:
Sub-Vitreous, Silky
Crystal System:
Monoclinic
Name:
Named in 1927 by Samuel George Gordon allusion to the chemical relationship to Vauxite.
The monoclinic dimorph of Paravauxite.
A rare supergene secondary mineral in the oxidized zone of tin mines.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2621:1
255f5b55-352f-449d-9909-dc33d19c7895
IMA Classification of MetavauxiteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Classification of MetavauxiteHide
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8.DC.25
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
42.11.11.1
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
19.14.24
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 |
|---|---|---|
| Mvx | 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 MetavauxiteHide
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Transparency:
Transparent, Translucent
Comment:
Lustre silky in aggregates.
Colour:
Colourless, white, light green; colourless in transmitted light.
Fracture:
Irregular/Uneven
Density:
2.345 g/cm3 (Measured) 2.36 g/cm3 (Calculated)
Optical Data of MetavauxiteHide
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RI values:
_n_α = 1.550 _n_β = 1.561 _n_γ = 1.577
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Pleochroism:
Non-pleochroic
Chemistry of MetavauxiteHide
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Mindat Formula:
Fe2+Al2(PO4)2(OH)2 · 8H2O
Crystallography of MetavauxiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 10.22 Å, b = 9.56 Å, c = 6.94 Å
β = 97.87°
Ratio:
a:b:c = 1.069 : 1 : 0.726
Unit Cell V:
671.67 ų (Calculated from Unit Cell)
Morphology:
Crystals prismatic to acicular, elongated [001], exhibiting forms {100}, {110}, {101}, {111}, and {211}. Commonly in subparallel to radial aggregates.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012432 | Metavauxite | Baur W H, Rao B R (1967) The crystal structure of metavauxite Die Naturwissenschaften 54 561-561 | 1967 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 10.12 Å | (69) |
| 5.095 Å | (50) |
| 4.687 Å | (100) |
| 4.337 Å | (79) |
| 3.985 Å | (54) |
| 2.764 Å | (75) |
| 2.749 Å | (32) |
Geological EnvironmentHide
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Type Occurrence of MetavauxiteHide
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Place of Conservation of Type Material:
The Natural History Museum, London, England: #1928,335. The U.S. National Museum of Natural History, Washington, D.C., USA: #136009.
Geological Setting of Type Material:
Oxidized zone of tin veins.
Associated Minerals at Type Locality:
Other Language Names for MetavauxiteHide
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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. | Ianbruceite | Zn2(AsO4)(OH) · 3H2O | Mon. 2/m : _P_21/b |
|---|---|---|---|
| 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.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 | Arthurite | CuFe3+2(AsO4)2(OH)2 · 4H2O | Mon. 2/m : _P_21/b |
| 8.DC.15 | Earlshannonite | Mn2+Fe3+2(PO4)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 | Cobaltarthurite | CoFe3+2(AsO4)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.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.17 | Kleemanite | ZnAl2(PO4)2(OH)2 · 3H2O | Mon. |
| 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.20 | Magnesiobermanite | MgMn3+2(PO4)2(OH)2 · 4H2O | Mon. 2 : _P_21 |
| 8.DC.22 | Kovdorskite | Mg2(PO4)(OH) · 3H2O | Mon. 2/m : _P_21/b |
| 8.DC.25 | Ferristrunzite | Fe3+Fe3+2(PO4)2(OH)3 · 5H2O | Tric. |
| 8.DC.25 | Ferrostrunzite | Fe2+Fe3+2(PO4)2(OH)2 · 6H2O | Tric. |
| 8.DC.25 | Metavivianite | Fe2+Fe3+2(PO4)2(OH)2 · 6H2O | Tric. 1 : _P_1 |
| 8.DC.25 | Strunzite | Mn2+Fe3+2(PO4)2(OH)2 · 6H2O | Tric. 1 : _P_1 |
| 8.DC.25 | Zincostrunzite | ZnFe3+2(PO4)2(OH)2 · 6.5H2O | Tric. 1 : _P_1 |
| 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 | Gordonite | MgAl2(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 | Mangangordonite | Mn2+Al2(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 | Pseudolaueite | Mn2+Fe3+2(PO4)2(OH)2 · 8H2O | Mon. 2/m : _P_21/b |
| 8.DC.30 | Sigloite | Fe3+Al2(PO4)2(OH)3 · 7H2O | Tric. 1 : _P_1 |
| 8.DC.30 | Stewartite | Mn2+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 | Ferrolaueite | Fe2+Fe3+2(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 | Maghrebite | MgAl2(AsO4)2(OH)2 · 8H2O | 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.32 | Tinticite | Fe3+3(PO4)2(OH)3 · 3H2O | Tric. 1 : _P_1 |
| 8.DC.32 | Kamarizaite | Fe3+3(AsO4)2(OH)3 · 3H2O | Tric. 1 : _P_1 |
| 8.DC.35 | Vauxite | Fe2+Al2(PO4)2(OH)2 · 6H2O | 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 | Gormanite | (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O | Tric. |
| 8.DC.45 | Souzalite | (Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O | Tric. 1 |
| 8.DC.47 | Kingite | Al3(PO4)2F2(OH) · 7H2O | Tric. |
| 8.DC.50 | Wavellite | Al3(PO4)2(OH,F)3 · 5H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 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.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 | Nevadaite | (Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 8.DC.60 | Cloncurryite | Cu0.5(VO)0.5Al2(PO4)2F2 · 5H2O | Mon. 2/m : _P_21/b |
| 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 |
Fluorescence of MetavauxiteHide
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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.
Internet Links for MetavauxiteHide
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References for MetavauxiteHide
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Localities for MetavauxiteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
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Locality ListHide
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