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Phosphoferrite Mineral Data

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General Phosphoferrite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mn)3(PO4)2•3(H2O)
Help on Composition: Composition: Molecular Weight = 410.85 gm
   Manganese   10.03 %  Mn   12.95 % MnO
   Iron        30.58 %  Fe   39.35 % FeO
   Phosphorus  15.08 %  P    34.55 % P2O5
   Hydrogen     1.47 %  H    13.15 % H2O
   Oxygen      42.84 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: 3(Fe2+0.75)3(Mn2+0.25)(PO4)2•3(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1926
Help on Locality: Locality: Hagendorf Sud, near Pleystein, Oberpfalz, Bavaria, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the compositoin, PHOSPHate and FERRous Iron.
Help on Name Pronunciation: Name Pronunciation: Phosphoferrite Say PHOSPHOFERRITE
Help on Synonym: Synonym: ICSD 302
  PDF 9-479

Phosphoferrite Image

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Comments: Translucent, brown crystal of phosphoferrite on matrix.
Location: Big Chief mine, Keystone, Pennington County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Phosphoferrite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.9391:1:0.8642
Help on Cell Dimensions: Cell Dimensions: a = 9.41, b = 10.02, c = 8.66, Z = 4; V = 816.54 Den(Calc)= 3.34
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmna
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.18(1), 2.724(0.8), 4.25(0.7),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

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

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Physical Properties of Phosphoferrite

Help on Cleavage: Cleavage: {010} Indistinct
Help on Color: Color: Colorless, Light green, Dark reddish brown, Reddish brown.
Help on Density: Density: 3.29
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Octahedral Crystals - Occurs as octahedral shaped crystals.
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: white

Optical Properties of Phosphoferrite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2048,KPDmeas= 0.2079,KC= 0.2074
Ncalc = 1.68 - 1.69
Help on Optical Data: Optical Data: Biaxial (+), a=1.672, b=1.68, g=1.7, bire=0.0280, 2V(Calc)=66, 2V(Meas)=68. Dispersion r > v distinct.

Calculated Properties of Phosphoferrite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.22 gm/cc
note: Specific Gravity of Phosphoferrite =3.29 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0066917373
Boson Index = 0.9933082627
Help on Photoelectric: Photoelectric: PEPhosphoferrite = 12.37 barns/electron
U=PEPhosphoferrite x rElectron Density= 39.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Phosphoferrite is Not Radioactive

Phosphoferrite Classification

Help on  Dana Class: Dana Class: (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 � x(H2O)
  (40.03.02)Phosphoferrite Group Phosphoferrite (Fe,Mn)3(PO4)2•3(H2O) Pmna 2/m 2/m 2/m Kryzhanovskite MnFe2(PO4)2(OH)2•(H2O) Pbna 2/m 2/m 2/m Reddingite Mn3(PO4)2•3(H2O) Pbna 2/m 2/m 2/m Landesite (Mn,Mg)9Fe3(PO4)8(OH)3•9(H2O) Pmna 2/m 2/m 2/m Garyansellite (Mg,Fe)3(PO4)2(OH,O)•1,5(H2O) Pbna 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.CC.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CC -With only medium-sized cations, RO4:H2O = 1:1.5
08.CC.05 Garyansellite (Mg,Fe)3(PO4)2(OH,O)•1,5(H2O) Pbna 2/m 2/m 2/m
08.CC.05 Kryzhanovskite MnFe2(PO4)2(OH)2•(H2O) Pbna 2/m 2/m 2/m
08.CC.05 Landesite (Mn,Mg)9Fe3(PO4)8(OH)3•9(H2O) Pmna 2/m 2/m 2/m
08.CC.05 Phosphoferrite (Fe,Mn)3(PO4)2•3(H2O) Pmna 2/m 2/m 2/m
08.CC.05 Reddingite Mn3(PO4)2•3(H2O) Pbna 2/m 2/m 2/m

Other Phosphoferrite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Phosphoferrite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 08.CC.05





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