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Metavivianite

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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.


Classification of MetavivianiteHide

Approved
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

Pronounciation of MetavivianiteHide

Pronounciation:
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 - 3.000 nβ = 1.640 - 3.000 nγ = 1.685 - 3.000
2V:
Measured: 85° (5), Calculated: 90°
Birefringence:
0.50
Max Birefringence:
δ = 0.085
Image 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 MetavivianiteHide

Formula:
Fe2+Fe3+2(PO4)2(OH)2 · 6H2O

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}

X-Ray Powder DiffractionHide

Powder Diffraction Data:
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

Type Occurrence of MetavivianiteHide

General Appearance of Type Material:
Blue black or Green black bladed crystals
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

AnapaiteCa2Fe2+(PO4)2 · 4H2O
SideriteFeCO3
SideriteFeCO3
Associated Minerals Based on Photo Data:
Baryte3 photos of Metavivianite associated with Baryte on mindat.org.
Opal1 photo of Metavivianite associated with Opal on mindat.org.
Vivianite1 photo of Metavivianite associated with Vivianite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon.
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.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon.
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon.
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15BendadaiteFe2+Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15UKI-2006-(PO:FeHZn)ZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
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.
8.DC.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.27BerauniteFe2+Fe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric.
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric.
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30UshkoviteMgFe3+2(PO4)2(OH)2 · 8H2OTric.
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2OTric. 1 : P1
8.DC.32TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2OTric. 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.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
8.DC.55MapimiteZn2Fe3+3(AsO4)3(OH)4 · 10H2OMon.
8.DC.57OgdensburgiteCa2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm (2/m 2/m 2/m)
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.13.1BarbosaliteFe2+Fe3+2(PO4)2(OH)2Mon. 2/m : P21/b
19.13.2StrengiteFePO4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.13.3PhosphosideriteFePO4 · 2H2OMon. 2/m
19.13.4DufréniteCa0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2OMon. 2/m : B2/b
19.13.5GiniiteFe2+Fe3+4(PO4)3(OH)5 · 2H2OMon. 2/m : P2/b
19.13.6WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
19.13.7TinticiteFe3+5.34(PO4)3.62(VO4)0.38(OH)4 · 6.7H2OTric. 1 : P1
19.13.8FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
19.13.9FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
19.13.10BerauniteFe2+Fe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
19.13.11VivianiteFe2+3(PO4)2 · 8H2OMon. 2/m : B2/m

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.

References for MetavivianiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.
Frost, R. L.; Weier, M.; Lyon, W. G. (2004): Metavivianite an intermediate mineral phase between vivianite, and ferro/ferristrunzite - a Raman spectroscopic study. Neues Jahrbuch für Mineralogie, Monatshefte 2004, 228-240.
N. V. Chukanov, R. Scholz, S. M. Aksenov, R. K. Rastsvetaeva, I. V. Pekov, D. I. Belakovskiy, K. Krambrock, R. M. Paniago, A. Righi, R. F. Martins, F. M. Belotti, V. Bermanec (2012), Metavivianite, Fe2+Fe3+2(PO4)2(OH)2 · 6H2O: new data and formula revision. Mineralogical Magazine 76, 725-741.

Internet Links for MetavivianiteHide

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 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.
Bolivia
 
  • Oruro Department
    • Dalence Province
      • Santa Fé mining district
Collection of Alfredo Petrov.
  • Potosí Department
    • Cornelio Saavedra Province
      • Machacamarca District (Colavi District)
        • Canutillos subdistrict
          • Huayllani
XRD confirmation by Dr. Anthony Kampf.
Brazil
 
  • Minas Gerais
    • 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
    • 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.; Bender, D. and Krimmelbein, W. (1994) Aktuelle Übersicht: Mineralien der Zinkhütte Genna/Sauerland. Stand Juni 1994. Mineralien-Welt, 4/94, 10.
  • Schleswig-Holstein
    • Bredstedt
      • Joldelund
A. Wittern: "Mineralfundorte in Deutschland", Schweizerbart (Stuttgart), 2001
Japan
 
  • Honshu Island
    • Kinki region
      • Hyogo prefecture
        • Kobe city
          • Nishi-ku
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
    • Nynäshamn
      • Norrö
Gustafsson, Lars & Otter, Bertil (1991): Mineralförekomster i Stockholmstrakten.Del 2. STEIN 18(4),4-12
UK
 
  • England
    • Devon
      • North Devon
        • Bishop's Tawton
Alysson Rowan Collection
      • Torridge
        • Parkham
Alysson Rowan Collection
Ukraine
 
  • Crimea
    • 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
Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Mineral and/or Locality  
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