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Metavivianite

A valid IMA mineral species
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About MetavivianiteHide

Formula:
Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Colour:
Dark blue to blue-black; dark green to green-black
Lustre:
Sub-Vitreous, Resinous, Greasy, Dull
Hardness:
1½ - 2
Specific Gravity:
2.69 (Calculated)
Crystal System:
Triclinic
Name:
Named by C. Ritz, Eric J. Essene, and Donald R. Peacor in 1974 for its structural relationship to vivianite.
Dimorph of:
Isostructural with:
Usually occurs as paramorphs after vivianite.
See also kertschenite.


Unique IdentifiersHide

Mindat ID:
2695
Long-form identifier:
mindat:1:1:2695:2

IMA Classification of MetavivianiteHide

Classification of MetavivianiteHide

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
40.11.9.4

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
11 :
19.13.12

19 : Phosphates
13 : Phosphates of Fe alone

Mineral SymbolsHide

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

SymbolSourceReference
MvivIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of MetavivianiteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of MetavivianiteHide

Sub-Vitreous, Resinous, Greasy, Dull
Transparency:
Translucent
Colour:
Dark blue to blue-black; dark green to green-black
Streak:
Blue or greenish blue
Hardness:
1½ - 2 on Mohs scale
Tenacity:
Sectile
Cleavage:
Perfect
{110}
Density:
2.69 g/cm3 (Calculated)

Optical Data of MetavivianiteHide

Type:
Biaxial (+)
RI values:
nα = 1.600 - 3 nβ = 1.640 - 3 nγ = 1.685 - 3
2V:
Measured: 85° (5), Calculated: 90°
Birefringence:
0.50
Max. Birefringence:
δ = 0.000 - 0.085
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.

Surface Relief:
Moderate
Dispersion:
very weak
Optical Extinction:
X perpendicular to {010}, Y parallel {110}
Pleochroism:
Visible
Comments:
X blue to blue green, Y,Z yellow green

Chemistry of MetavivianiteHide

Mindat Formula:
Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Element Weights:
Element% weight
O51.241 %
Fe33.535 %
P12.400 %
H2.825 %

Calculated from ideal end-member formula.

Crystallography of MetavivianiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 7.989(1) Å, b = 9.321(2) Å, c = 4.629(1) Å
α = 97.34(1)°, β = 95.96(1)°, γ = 108.59(2)°
Ratio:
a:b:c = 0.857 : 1 : 0.497
Unit Cell V:
320.18 ų
Z:
1
Morphology:
Bladed crystals, often with irregular acute multiple terminations.
Twinning:
{110}

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0012078MetavivianiteDormann J, Gasperin M, Poullen J F (1982) Etude structurale de la sequence d'oxydation de la vivianite Fe3(PO4)2*8(H2O) Bulletin de Mineralogie 105 147-16019820293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.59 Å(40)
6.71 Å(100)
4.86 Å(40)
4.27 Å(10)
3.97 Å(30)
3.07 Å(10)
2.90 Å(20)
2.77 Å(30)
Comments:
ICDD 29-1137

Geological EnvironmentHide

Paragenetic Mode(s):
Geological Setting:
Phosphate veins in ironstone
Phosphatic sedimentary units

Type Occurrence of MetavivianiteHide

General Appearance of Type Material:
Blue black or green black bladed crystals
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 127100.
Geological Setting of Type Material:
Late stage oxidation of vivianite in a granite pegmatite
Associated Minerals at Type Locality:

Synonyms of MetavivianiteHide

Other Language Names for MetavivianiteHide

Simplified Chinese:三斜蓝铁矿
Traditional Chinese:三斜藍鐵礦

Common AssociatesHide

Associated Minerals Based on Photo Data:
19 photos of Metavivianite associated with SantabarbaraiteFe3+3(PO4)2(OH)3 · 5H2O
11 photos of Metavivianite associated with VivianiteFe2+Fe2+2(PO4)2 · 8H2O
6 photos of Metavivianite associated with SideriteFeCO3
3 photos of Metavivianite associated with BaryteBaSO4
3 photos of Metavivianite associated with Limonite
2 photos of Metavivianite associated with Berthierine(Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
1 photo of Metavivianite associated with AnglesitePbSO4
1 photo of Metavivianite associated with Kertschenite
1 photo of Metavivianite associated with Kryzhanovskite(Fe3+,Mn2+)3(PO4)2(OH,H2O)3
1 photo of Metavivianite associated with QuartzSiO2

Related Minerals - Strunz-mindat GroupingHide

8.DC.CésarferreiraiteFe2+ Fe3+2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.FerrivauxiteFe3+Al2(PO4)2(OH)3 · 5H2OTric. 1 : P1
8.DC.IanbruceiteZn2(AsO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon. 2/m : B2/b
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 2 2 2 : P21 21 21
8.DC.10LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15UM2006-27-PO:FeHZnZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.15CobaltarthuriteCoFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15BendadaiteFe2+Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
8.DC.20MagnesiobermaniteMgMn3+2(PO4)2(OH)2 · 4H2OMon. 2 : P21
8.DC.20BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
8.DC.20CoralloiteMn2+Mn3+2(AsO4)2(OH)2 · 4H2OTric. 1 : P1
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.25ZincostrunziteZnFe3+2(PO4)2(OH)2 · 6.5H2OTric. 1 : P1
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.27BerauniteFe3+6(PO4)4O(OH)4 · 6H2OMon. m : Bb
8.DC.27TvrdýiteFe2+Fe3+2Al3(PO4)4(OH)5(H2O)4 · 2H2OMon. 2/m : B2/b
8.DC.27ZincoberauniteZnFe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric. 1 : P1
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2OTric. 1 : P1
8.DC.30Kayrobertsonite[MnAl2(PO4)2(OH)2(H2O)4] · 2H2OTric. 1 : P1
8.DC.30KummeriteMn2+Fe3+Al(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.32KamarizaiteFe3+3(AsO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.32TinticiteFe3+3(PO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2OOrth.
8.DC.40CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric. 1
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.50FluorwavelliteAl3(PO4)2(OH)2F · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.50WavelliteAl3(PO4)2(OH)3 · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
8.DC.55MapimiteZn2Fe3+3(AsO4)3(OH)4 · 10H2OMon. m : Bm
8.DC.57OgdensburgiteCa2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/b
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm (2/m 2/m 2/m)
8.DC.62KenngottiteMn2+3Fe3+4(PO4)4(OH)6(H2O)2 Mon. 2/m : P2/b
8.DC.67MolinelloiteCu(H2O)(OH)V4+O(V5+O4)Tric. 1 : P1
8.DC.70WhitecapsiteH16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2OHex. 6/m : P63/m
8.DC.75HeimitePbCu2(AsO4)(OH)3 · 2H2OMon. 2/m
8.DC.80LedneviteCu[PO3(OH)] · H2OMon. 2/m : P21/b

Fluorescence of MetavivianiteHide

Not fluorescent

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 MetavivianiteHide

References for MetavivianiteHide

Reference List:

Localities for MetavivianiteHide

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 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.
Bolivia
 
  • Oruro
    • Pantaleón Dalence Province
      • Santa Fé mining district
Petrov (n.d.)
  • Potosí
    • Cornelio Saavedra Province
      • Tacobamba Municipality
        • Canutillos subdistrict
          • Huayllani
XRD confirmation by Dr. Anthony Kampf.
Brazil
 
  • Minas Gerais
    • Galiléia
      • Sapucaia do Norte
Baijot et al. (2012)
Cameroon
 
  • Adamawa Region
    • Vina
      • Martap
Fransolet et al. (1984)
Canada
 
  • Yukon
    • Dawson mining district
Robinson et al. (1992)
150-152. +2 other references
Finland
 
  • Pirkanmaa
    • Orivesi
      • Eräjärvi area
Lahti (1981)
Sandström et al. (2009)
Germany
 
  • Hesse
    • Giessen Region
      • Limburg-Weilburg
        • Weinbach
XRD and Wet Chemical by Gerhard Möhn
  • Lower Saxony
    • Goslar District
      • Langelsheim
        • Lautenthal
Schnorrer-Köhler (1991)
  • North Rhine-Westphalia
    • Arnsberg
      • Märkischer Kreis
        • Iserlohn
          • Letmathe
            • Helmke quarry nature reserve
Schnorrer (1993) +1 other reference
  • Schleswig-Holstein
    • Nordfriesland
      • Joldelund
Wittern (2001)
Italy
 
  • Tuscany
    • Upper Valdarno (Upper Val d'Arno)
Pratesi (1993) +2 other references
Pratesi (1993) +2 other references
Japan
 
  • Hyogo Prefecture
    • Kobe city
      • Nishi-ku
S. Matsubara (2000)
Netherlands
 
  • North Brabant
T.G. Nijland
Portugal
 
  • Faro
    • Alcoutim
      • Martim Longo
Alves (n.d.)
  • Guarda
    • Gouveia
      • Folgosinho
DOI: ... +1 other reference
Russia
 
  • Sakha
    • Yakutsk
Shen et al. (2021)
Sweden
 
  • Stockholm County
    • Haninge
      • Norrö
Gustafsson et al. (1991)
UK
 
  • England
    • Cumbria
Cooper et al. (1990)
    • Devon
      • North Devon
        • Bishop's Tawton
Alysson Rowan collection
      • Torridge
        • Parkham
Alysson Rowan collection
Ukraine
 
  • Crimea
Geologiya SSSR (The geology of USSR) +1 other reference
Abramov (1989)
        • Kerchenskoe deposit
Arbuzov V.A. et al. (1967)
Popov S.P. (1938) +1 other reference
USA
 
  • Florida
    • Polk County
      • Central Florida Phosphate Mining District (Bone Valley)
        • Homeland
Denicourt +1 other reference
  • New Hampshire
    • Cheshire County
      • Walpole
Bob Wilken collection
    • Grafton County
      • Groton
Whitmore et al. (2004)
  • New Jersey
    • Gloucester County
      • Harrison Township
Luetcke (n.d.)
  • South Dakota
    • Custer County
      • Custer Mining District
        • Custer
Smith et al. (2000)
    • Pennington County
      • Keystone Mining District
        • Glendale
Ritz et al. (1974) +1 other reference
  • Wisconsin
    • Rusk County
      • Ladysmith
Cordua (1998)
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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