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Feroxyhyte Mineral Data
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General Feroxyhyte Information
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 Chemical Formula: |
Fe+++O(OH) |
| Composition: |
Molecular Weight = 88.85 gm |
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Iron 62.85 % Fe 89.86 % Fe2O3 |
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Hydrogen 1.13 % H 10.14 % H2O |
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Oxygen 36.01 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe3+O(OH) |
| Environment: |
Deep ocean (high pressure, low temperature, saltwater). Alters spontaneously to geothite on exposure to air. |
| IMA Status: |
Approved IMA 1976 |
| Locality: |
Pacific ocean Fe-Mn nodules. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition (Ferric, Oxygen, Hydroxide). |
| Name Pronunciation: |
Feroxyhyte + Pronunciation  |
| Synonym: |
ICSD 33615 |
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PDF 13-518 |
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Feroxyhyte Image |
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Images:
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Feroxyhyte Crystallography
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| Axial Ratios: |
a:c = 1:1.56996 |
| Cell Dimensions: |
a = 2.93, c = 4.6, Z = 1; V = 34.20 Den(Calc)= 4.31 |
| Crystal System: |
Hexagonal Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 2.54(1), 1.47(0.8), 2.23(0.5), |
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Physical Properties of Feroxyhyte
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| Color: |
Brown. |
| Density: |
4.2 |
| Diaphaneity: |
Opaque |
| Habit: |
Concretionary - Rounded massive fine-grained materials. |
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
| Habit: |
Nodular - Tuberose forms having irregular protuberances over the surface. |
| Magnetism: |
Magnetic |
| Streak: |
yellow |
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Optical Properties of Feroxyhyte
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| 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
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Calculated Properties of Feroxyhyte
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| Electron Density: |
Bulk Density (Electron Density)=4.17 gm/cc
note: Specific Gravity of Feroxyhyte =4.31 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PEFeroxyhyte = 18.93 barns/electron
U=PEFeroxyhyte x rElectron Density= 78.97 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Feroxyhyte is Not Radioactive |
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Feroxyhyte Classification
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| Dana Class: |
06.01.04.04 (06)Hydroxides and Oxides Containing Hydroxyl |
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(06.01)where X+++O OH |
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(06.01.04)Heterogenite Group |
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06.01.04.01 Heterogenite-2H CoO(OH) P 63/mmc 6/m 2/m 2/m |
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06.01.04.02 Heterogenite-3R CoO(OH) R 3m 3 2/m |
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06.01.04.03 Feitknechtite beta-MnO(OH) Unk Hex |
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06.01.04.04 Feroxyhyte FeO(OH) Unk Hex |
| Strunz Class: |
04.FE.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.F - Hydroxides (without V or U) |
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04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra |
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04.FE.40 Feroxyhyte FeO(OH) Unk Hex |
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04.FE.40 Vernadite (Mn,Fe,Ca,Na)(O,OH)2•n(H2O) I 4/m 4/m |
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Other Feroxyhyte Information
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Feroxyhyte Specimen Label here :
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Feroxyhyte
Fe+++O(OH)
Dana No: 06.01.04.04 Strunz No: 04.FE.40
Locality:
Notes:
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