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Vivianite Mineral Data

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General Vivianite Information

Help on Chemical  Formula: Chemical Formula: Fe++3(PO4)2•8(H2O)
Help on Composition: Composition: Molecular Weight = 501.61 gm
   Iron        33.40 %  Fe   42.97 % FeO
   Phosphorus  12.35 %  P    28.30 % P2O5
   Hydrogen     3.22 %  H    28.73 % H2O
   Oxygen      51.03 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+3(PO4)2•8(H2O)
Help on Environment: Environment: Common secondary mineral in the gossan of metallic ore deposits, pegmatites, sedimentary authigenic mineralization in association with organic materials.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1817
Help on Locality: Locality: St. Agnes, Cornwall, England Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the English mineralogist, J. G. Vivian.
Help on Name Pronunciation: Name Pronunciation: Vivianite + Pronunciation Say VIVIANITE
Help on Synonym: Synonym: Blue Iron Earth
  ICSD 200703
  PDF 30-662
 

Vivianite Image

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  Vivianite

Comments: Transparent, bluish crystal aggregate of vivianite on matrix.
Location: Santa Eulalia, Chihuahua, Mexico. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Maricite   Vivianite

Comments: Brown maricite nodule with internal radiating structure, with blue vivianite.
Location: Big Fish River, Yukon Territory, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Eosphorite   Vivianite

Comments: Bottle-green translucent vivianite crystal (2cm) associated with reddish, micro eosphorite crystals.
Location: Lavra do Énio pegmatite, Galiléia, Governador Valadares, Rio Doce, Minas Gerais, Brazil. Scale: 3.5 x 3 x 2 cm..
© Tom Loomis / Dakota Matrix

Vivianite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7501:1:0.3501
Help on Cell Dimensions: Cell Dimensions: a = 10.06, b = 13.41, c = 4.696, Z = 2; beta = 104.3° V = 613.88 Den(Calc)= 2.71
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.8(1), 2.71(0.67), 2.97(0.67),
Help on Forms: Forms:

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Drag2 - Resize

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Help on Above

Forms: ( 0 1 0) ( 2 0 1) ( 2 2 1) ( 1 0 0) ( 1 1 0)

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Physical Properties of Vivianite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Colorless, Green, Blue, Dark green, Dark bluish green.
Help on Density: Density: 2.6 - 2.7, Average = 2.65
Help on Diaphaneity: Diaphaneity: Transparent to translucent to opaque
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Concretionary - Rounded massive fine-grained materials.
Help on Habit: Habit: Divergent - Crystals radiate from a center without producing stellar forms.
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: bluish white
 

Optical Properties of Vivianite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.036 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2332,KPDmeas= 0.2385,KC= 0.2303
Ncalc = 1.6 - 1.62
Help on Optical Data: Optical Data: Biaxial (+), a=1.58-1.626, b=1.598-1.662, g=1.627-1.699, bire=0.0470-0.0730, 2V(Calc)=78-88, 2V(Meas)=63.5-83.5. Dispersion none.
Help on Pleochroism (x): Pleochroism (x): cobalt blue.
Help on Pleochroism (y): Pleochroism (y): pale greenish yellow.
 

Calculated Properties of Vivianite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.72 gm/cc
note: Specific Gravity of Vivianite =2.71 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0073307814
Boson Index = 0.9926692186
Help on Photoelectric: Photoelectric: PEVivianite = 10.34 barns/electron
U=PEVivianite x rElectron Density= 28.16 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vivianite is Not Radioactive
 

Vivianite Classification

Help on  Dana Class: Dana Class: 40.03.06.01 (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 � x(H2O)
  (40.03.06)Vivianite Group
 
40.03.06.01 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m
 
40.03.06.02 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m
 
40.03.06.03 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.04 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.05 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m
 
40.03.06.06 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m
 
40.03.06.07 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m
 
40.03.06.08 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m
 
40.03.06.09 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.CE.40 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CE -With only medium-sized cations, RO4:H2O � 1:2.5
 
08.CE.40 Arupite (Ni,Fe)3(PO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Annabergite Ni3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Baricite (Mg,Fe)3(PO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Erythrite Co3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Ferrisymplesite Fe3(AsO4)2(OH)3•5(H2O) None
 
08.CE.40 Hornesite Mg3(AsO4)2•8(H2O) I2/m 2/m
 
08.CE.40 Kottigite Zn3(AsO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Manganohornesite (Mn,Mg)3(AsO4)2•8(H2O) P 21/c 2/m
 
08.CE.40 Parasymplesite Fe3(AsO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Vivianite Fe3(PO4)2•8(H2O) C 2/m 2/m
 
08.CE.40 Pakhomovskyite! Co3(PO4)2•8(H2O) C 2/m 2/m
 

Other Vivianite Information

Help on See Also: See Also: Links to other databases for Vivianite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - CalTech Mineral Spectroscopy
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - HyperPhysics
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - WWW-MINCRYST
19 - YupRocks
20 - theimage

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Print or Cut-and-Paste your Vivianite Specimen Label here :

Vivianite

Fe++3(PO4)2•8(H2O)
Dana No: 40.03.06.01 Strunz No: 08.CE.40
Locality:

 

Notes:

 

 


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