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Metavivianite

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Formula:
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
System:TriclinicColour:Dark blue to blue-black; ...
Hardness:1½ - 2
Name:Named by C. Ritz, Eric J. Essene, and Donald R. Peacor in 1974 for its structural relationship to vivianite.
Dimorph of:Ferrostrunzite


Usually occurs as paramorphs after vivianite.
See also kertschenite.

Classification of Metavivianite

IMA status:Approved
Strunz 8th edition ID:7/C.14-20
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:40.11.9.4

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
11 :
Hey's CIM Ref.:19.13.12

19 : Phosphates
13 : Phosphates of Fe alone
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Type Occurrence of Metavivianite

Type Locality:Big Chief Mine (Johnson pegmatite), Glendale, Keystone District, Pennington Co., South Dakota, USA
General Appearance of Type Material:Blue black or Green black bladed crystals
Year of Discovery:1974
Geological Setting of type material:Late stage oxidation of vivianite in a granite pegmatite
Associated Minerals at type locality:
TriphyliteSideriteKryzhanovskite

Occurrences of Metavivianite

Geological Setting:Phosphate veins in ironstone
Phosphatic sedimentary units

Physical Properties of Metavivianite

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

Crystallography of Metavivianite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Space Group 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 Volume:V 320.18 ų
Z:1
Morphology:Bladed crystals, often with irregular acute multiple terminations.
Twinning:{110}
X-Ray Powder Diffraction:
d-spacingIntensity
8.59 (40)
6.71 (100)
4.86 (40)
4.27 (10)
3.97 (30)
3.07 (10)
2.90 (20)
2.77 (30)
Comments:ICDD 29-1137

Optical Data of Metavivianite

Type:Biaxial (+)
RI values: nα = 1.600 - 3.000 nβ = 1.640 - 3.000 nγ = 1.685 - 3.000
2V:Measured: 85° (5), Calculated: 90°
Birefringence:0.50
Maximum Birefringence:δ = 0.085

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:very weak
Optical Extinction:X perpendicular to {010}, Y parallel {110}
Pleochroism:Visible
Comments:X blue to blue green, Y,Z yellow green

Chemical Properties of Metavivianite

Formula:
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
Essential elements:Fe, H, O, P
All elements listed in formula:Fe, H, O, P

Relationship of Metavivianite to other Species

Common Associates:
SideriteSideriteAnapaite
Related Minerals - Nickel-Strunz Grouping):

- +
8.DC.05Nissonite
Cu
 
2
Mg
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 5H
 
2
O
8.DC.07Euchroite
Cu
 
2
(AsO
 
4
)(OH) · 3H
 
2
O
8.DC.10Legrandite
Zn
 
2
(AsO
 
4
)(OH) · H
 
2
O
8.DC.12Strashimirite
Cu
 
8
(AsO
 
4
)
 
4
(OH)
 
4
· 5H
 
2
O
8.DC.15Arthurite
CuFe
3+
2
(AsO
 
4
,PO
 
4
,SO
 
4
)
 
2
(OH,O)
 
2
· 4H
 
2
O
8.DC.15Earlshannonite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Ojuelaite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Whitmoreite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Cobaltarthurite
(Co,Mg)Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Bendadaite
Fe
2+
 
Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15Kunatite
CuFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15UKI-2006-(PO:FeHZn)
ZnFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.15UKI-2006-(PO:AlCuFeH)
Fe
2+
 
Al
 
3
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.17Kleemanite
ZnAl
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 3H
 
2
O
8.DC.20Bermanite
Mn
2+
 
Mn
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.20Coralloite
Mn
2+
 
Mn
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
8.DC.22Kovdorskite
Mg
 
2
(PO
 
4
)(OH) · 3H
 
2
O
8.DC.25Ferristrunzite
Fe
3+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
3
· 5H
 
2
O
8.DC.25Ferrostrunzite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
8.DC.25Metavauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.25Strunzite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
8.DC.27Beraunite
Fe
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
5
· 4H
 
2
O
8.DC.30Gordonite
MgAl
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Laueite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Mangangordonite
Mn
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Paravauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Pseudolaueite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Sigloite
Fe
3+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
3
· 7H
 
2
O
8.DC.30Stewartite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Ushkovite
MgFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Ferrolaueite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Kastningite
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Maghrebite
MgAl
 
2
(AsO
 
4
)
 
2
(OH)
 
2
· 8H
 
2
O
8.DC.30Nordgauite
MnAl
 
2
(PO
 
4
)
 
2
(F,OH)
 
2
· 5H
 
2
O
8.DC.32Tinticite
Fe
3+
5.34
(PO
 
4
)
 
3.62
(VO
 
4
)
 
0.38
(OH)
 
4
· 6.7H
 
2
O
8.DC.35Vauxite
Fe
2+
 
Al
 
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
8.DC.37Vantasselite
Al
 
4
(PO
 
4
)
 
3
(OH)
 
3
· 9H
 
2
O
8.DC.40Cacoxenite
Fe
3+
24
Al(PO
 
4
)
 
17
O
 
6
(OH)
 
12
· 17H
 
2
O
8.DC.45Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
· 2H
 
2
O
8.DC.45Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
(PO
 
4
)
 
4
(OH)
 
6
· 2H
 
2
O
8.DC.47Kingite
Al
 
3
(PO
 
4
)
 
2
(OH)
 
3
· 9H
 
2
O
8.DC.50Wavellite
Al
 
3
(PO
 
4
)
 
2
(OH,F)
 
3
· 5H
 
2
O
8.DC.50Allanpringite
Fe
3+
3
(PO
 
4
)
 
2
(OH)
 
3
· 5H
 
2
O
8.DC.52Kribergite
Al
 
5
(PO
 
4
)
 
3
(SO
 
4
)(OH)
 
4
· 4H
 
2
O
8.DC.55Mapimite
Zn
 
2
Fe
3+
3
(AsO
 
4
)
 
3
(OH)
 
4
· 10H
 
2
O
8.DC.57Ogdensburgite
Ca
 
2
Fe
3+
4
(Zn,Mn
2+
 
)(AsO
 
4
)
 
4
(OH)
 
6
· 6H
 
2
O
8.DC.60Nevadaite
(Cu
2+
 
,Al,V
3+
 
)
 
6
Al
 
8
(PO
 
4
)
 
8
F
 
8
(OH)
 
2
· 22H
 
2
O
8.DC.60Cloncurryite
(Cu,VO)Al
 
2
(PO
 
4
)
 
2
(F,OH)
 
2
· 4.5-5H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.13.1Barbosalite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
19.13.2Strengite
FePO
 
4
· 2H
 
2
O
19.13.3Phosphosiderite
FePO
 
4
· 2H
 
2
O
19.13.4Dufrénite
Ca
 
0.5
Fe
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
6
· 2H
 
2
O
19.13.5Giniite
Fe
2+
 
Fe
3+
4
(PO
 
4
)
 
3
(OH)
 
5
· 2H
 
2
O
19.13.6Whitmoreite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 4H
 
2
O
19.13.7Tinticite
Fe
3+
5.34
(PO
 
4
)
 
3.62
(VO
 
4
)
 
0.38
(OH)
 
4
· 6.7H
 
2
O
19.13.8Ferristrunzite
Fe
3+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
3
· 5H
 
2
O
19.13.9Ferrostrunzite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
· 6H
 
2
O
19.13.10Beraunite
Fe
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
5
· 4H
 
2
O
19.13.11Vivianite
Fe
2+
3
(PO
 
4
)
 
2
· 8H
 
2
O

Other Names for Metavivianite

Synonyms:
IMA1973-049Kerchenite-alpha
Other Languages:
German:Metavivianit
Russian:Метавивианит
Spanish:Metavivianita

Other Information

Fluorescence in UV light:Not fluorescent
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Metavivianite

Reference List:

- +
Ritz, C., E.J. Essene, and D.R. Peacor (1974): Metavivianite, Fe3(PO4)2•8H2O,
a new mineral. Amer. Mineral., 59, 896–899.

Chevalier, Raymond; Gaspérin, Madeleine; Poullen, Jean Francois (1980): Atomic structure of an oxidized vivianite. Comptes Rendus des Seances de l'Academie des Sciences, D291, 661-663.

Dormann, J.-L., M. Gaspérin, and J.-F. Poullen (1980): Étude structurale de la séquence d'oxydation de la vivianite Fe3(PO4)2 •8H2O. Bull. Minéral., 105, 147–160 (in French with English abs.).

American Mineralogist (1981): 66: 1103.

Sameshima, T., G.S. Henderson, P.M. Black, and K.A. Rodgers (1985): X-ray diffraction studies of vivianite, metavivianite, and baricite. Mineralogical Magazine, 49, 81–85.

Rodgers, K.A. (1986): Metavivianite and kerchenite: a review. Mineral. Mag., 50, 687–691.

American Mineralogist (1988): 73: 667.

Chukanov, N.V., et al., (2012), Metavivianite, Fe2+Fe3+2(PO4)2(OH)2 · 6H2O: new data and formula revision. Mineralogical Magazine 76,725-741

Internet Links for Metavivianite

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  • Localities for Metavivianite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Bolivia
     
    • Oruro Department
      • Dalence Province
        • Santa Fé Mining District
    Collection of Alfredo Petrov.
    • Potosí Department
      • Cornelio Saavedra Province
        • Machacamarca District (Colavi District)
          • Huallani (Huayllani)
            • Infiernillos mine
    XRD confirmation by Dr. Anthony Kampf.
    Brazil
     
    • Minas Gerais
      • Doce valley
        • Galiléia
          • Sapucaia do Norte
    Baijot, M., Hatert, F. & Philippo, S. (2012): Mineralogy and geochemistry of phosphates and silicates in the Sapucaia pegmatite, Minas Gerais, Brazil: Genetic implications. Canadian Mineralogist. 50, 1531-1554
    Cameroon
     
    • Adamaoua Region
      • Adamaoua Plateau (Adamawa Plateau)
    FRANSOLET, A.-M., OUSTRIERE, P., FONTAN, F. & PILLARD, F. (1984) La mantiennéite, une nouvelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Minéralogie 107, 737-744.
    Canada
     
    • Yukon Territory
      • Dawson Mining District
    MinRec 23:4-47
    [Mineralogical Record Vol 23 No.4 pp31]
    Finland
     
    • Western and Inner Finland Region
      • Orivesi
        • Eräjärvi area
    Sandström, F. & Lahti, S.I. (2009): Viitaniemipegmatiten i Eräjärvi, Orivesi, Finland. Litiofilen 26 (1): 11-38
    Germany
     
    • Lower Saxony
      • Harz
        • Lautenthal
    Schnorrer-Köhler, G. (1991): Mineralogische Notizen V. Aufschluss 42, 155-171.
    No reference listed
    • North Rhine-Westphalia
      • Sauerland
        • Iserlohn
          • Letmathe
    Schnorrer, G. (1993): Mineralogische Notizen VI. Aufschluss, 44, 44-58.
    • Schleswig-Holstein
      • Bredstedt
        • Joldelund
    A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
    Japan
     
    • Honshu Island
      • Kinki region
        • Hyogo prefecture
          • Kobe city
    S. Matsubara (2000) Vivianite nodules and secondary phosphates in Pliocene-Pleistocene clay deposits from Hime-shima, Oita Prefecture and Kobe, Hyogo Prefecture, Western Japan. Memoirs of the National Science Museum (Tokyo), 33.
    Netherlands
     
    • Noord-Brabant
    T.G. Nijland, J.C. Zwaan, D. Visser, J. Leloux - De mineralen van Nederland - 2007
    Sweden
     
    • Södermanland
      • Norrö
    Gustafsson, Lars & Otter, Bertil (1991): Mineralförekomster i Stockholmstrakten.Del 2. STEIN 18(4),4-12
    Ukraine
     
    • Crimea Oblast'
      • Crimea peninsula
    Ritz, C., E.J. Essene, and D.R. Peacor (1974): Metavivianite, Fe3(PO4)2•8H2O, a new mineral. Amer. Mineral., 59, 896–899.; Geologiya SSSR (The geology of USSR) (1969) - Nedra (Moscou), 1969, vol. VIII, 575 p.
          • Kerchenskyi (Fe)-ore basin
            • Kerchenskoe deposit
    not refered listen
    Arbuzov V.A. et al. (1967) Kerch Iron-Ore Basin (Kerchenskii Zhelezorydny Bassein)/ - Moscow:Nedra. - 576 h/ (Rus.)
    Chukanov Nikita V. (2005) Minerals of the Kerch iron0ore basin in Eastern Crimea. - Mineralogical Almanac, vol.8, 109 p.; Popov S.P. (1938) Mineralogy of the Crimea (Mineralogiya Kryma). Moscow-Leningrad:izd-vo AN SSSR, 352 p. (Rus.) Chukanov Nikita V. (2005). Minerals of the Kerch iron-ore basin in Eastern Crimea. Mineralogical Almanac, vol.8, 109 p. (Eng.)
    USA
     
    • Florida
      • Polk Co.
        • Central Florida Phosphate District (Bone Valley)
          • Homeland
    Denicourt, R., Micromounters of New England program, NE meeting program, May 1984; Marc V. Hurst (2012) Central Florida Phosphate District. Southeastern Geological Society Field Trip Guidebook No. 57
    • New Hampshire
      • Cheshire Co.
        • Walpole
    Bob Wilken collection
      • Grafton Co.
        • Groton
    No reference listed
    Whitmore & Lawrence, 2004. The Pegmatite Mines Known As Palermo, p. 96.
    • South Dakota
      • Custer Co.
        • Custer District
          • Custer
    R&M 75:3 pp 156-169
      • Pennington Co.
        • Keystone District
          • Glendale
    Rocks & Minerals: 60: 116.
    • Wisconsin
      • Rusk Co.
        • Ladysmith
    Rocks & Min. Vol. 73 (1998)
    Mineral and/or Locality
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