Mineralogy Database

Feroxyhyte Mineral Data

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General Feroxyhyte Information

Help on Chemical  Formula: Chemical Formula: Fe+++O(OH)
Help on Composition: Composition: Molecular Weight = 88.85 gm
   Iron      62.85 %  Fe   89.86 % Fe2O3
   Hydrogen   1.13 %  H    10.14 % H2O
   Oxygen    36.01 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+O(OH)
Help on Environment: Environment: Deep ocean (high pressure, low temperature, saltwater). Alters spontaneously to geothite on exposure to air.
Help on IMA Status: IMA Status: Approved IMA 1976
Help on Locality: Locality: Pacific ocean Fe-Mn nodules. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (Ferric, Oxygen, Hydroxide).
Help on Name Pronunciation: Name Pronunciation: Feroxyhyte + Pronunciation Say FEROXYHYTE
Help on Synonym: Synonym: ICSD 33615
  PDF 13-518

Feroxyhyte Image

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Comments: Brown botryoidal feroxyhyte.
Location: Pachi Limani, Laurium, Attiki, Greece. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Feroxyhyte Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.56996
Help on Cell Dimensions: Cell Dimensions: a = 2.93, c = 4.6, Z = 1; V = 34.20 Den(Calc)= 4.31
Help on Crystal System: Crystal System: Hexagonal Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.54(1), 1.47(0.8), 2.23(0.5),

Physical Properties of Feroxyhyte

Help on Color: Color: Brown.
Help on Density: Density: 4.2
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Concretionary - Rounded massive fine-grained materials.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Magnetism: Magnetism: Magnetic
Help on Streak: Streak: yellow

Optical Properties of Feroxyhyte

Help on Optical Data: Optical Data: NCalc= 2.37 - from Gladstone-Dale relationship (KC = 0.3175) where Ncalc=Dcalc*KC+1
NCalc= 2.33 - from Gladstone-Dale relationship (KC = 0.3175) where Ncalc=Dmeas*KC+1

Calculated Properties of Feroxyhyte

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.17 gm/cc
note: Specific Gravity of Feroxyhyte =4.31 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEFeroxyhyte = 18.93 barns/electron
U=PEFeroxyhyte x rElectron Density= 78.97 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Feroxyhyte is Not Radioactive

Feroxyhyte Classification

Help on  Dana Class: Dana Class: (06)Hydroxides and Oxides Containing Hydroxyl
  (06.01)where X+++O OH
  (06.01.04)Heterogenite Group Heterogenite-2H CoO(OH) P 63/mmc 6/m 2/m 2/m Heterogenite-3R CoO(OH) R 3m 3 2/m Feitknechtite beta-MnO(OH) Unk Hex Feroxyhyte FeO(OH) Unk Hex
Help on  Strunz Class: Strunz Class: 04.FE.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
04.FE.40 Feroxyhyte FeO(OH) Unk Hex
04.FE.40 Vernadite (Mn,Fe,Ca,Na)(O,OH)2•n(H2O) I 4/m 4/m

Other Feroxyhyte Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Feroxyhyte :
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 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 04.FE.40





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