Akaganeite Mineral Data + 
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- 6.1.6.1 Akaganeite Fe(O,OH,Cl) I2/m 2/m
- IV/F.06-10 Diaspore AlO(OH) Pbnm 2/m 2/m 2/m
- IV/F.06-20 Boehmite AlO(OH) Amam 2/m 2/m 2/m
- IV/F.06-25 Tsumgallite! GaO(OH) Pbnm 2/m 2/m 2/m
- IV/F.06-30 Goethite FeO(OH) Pbnm 2/m 2/m 2/m
- IV/F.06-40 Lepidocrocite FeO(OH) Amam 2/m 2/m 2/m
- IV/F.06-50 Akaganeite Fe(O,OH,Cl) I2/m 2/m
- IV/F.06-60 Feroxyhyte FeO(OH) Unk Hex
- IV/F.06-70 Manganite MnO(OH) B21/d 2/m
- IV/F.06-80 Groutite MnO(OH) Pbnm 2/m 2/m 2/m
- IV/F.06-90 Feitknechtite beta-MnO(OH) Unk Hex
General Akaganeite Information |
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 Chemical Formula: |
Fe+++(O,OH,Cl) | ||
| Composition: |
Molecular Weight = 761.37 gm | ||
| Iron 55.75 % Fe 79.70 % Fe2O3 | |||
| Nickel 3.08 % Ni 3.92 % NiO | |||
| Hydrogen 1.28 % H 11.48 % H2O | |||
| Chlorine 6.05 % Cl 6.05 % Cl | |||
| - % Cl -1.37 % -O=Cl2 | |||
| Oxygen 33.83 % O | |||
| ______ ______ | |||
| 100.00 % 99.79 % = TOTAL OXIDE | |||
| Empirical Formula: |
Fe3+7.6Ni0.4O6.4(OH)9.7Cl1.3 | ||
| Environment: |
Apparently formed from pyrrhotite by ferric-sulfate-bearing solutions. Transforms to hematite at 290 to 310 Deg. C. | ||
| IMA Status: |
Approved IMA 1961 | ||
| Locality: |
Akagane mine, Iwate Prefecture, Japan. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
| Synonym: |
ICSD 69606 | ||
| PDF 42-1315 | |||
Akaganeite Image | |||
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Images:
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Akaganeite Crystallography |
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| Axial Ratios: |
a:b:c =3.4927:1:3.469 | ||
| Cell Dimensions: |
a = 10.587, b = 3.0311, c = 10.515, Z = 1; beta = 90.03° V = 337.43 Den(Calc)= 3.75 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 1.635(1), 3.311(1), 7.4(1), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Akaganeite |
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| Color: |
Brown, Rusty brown. | ||
| Density: |
3 | ||
| Diaphaniety: |
Opaque | ||
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. | ||
| Habit: |
Powdery - Forms a loose, poorly-coherent pulverulent mass. | ||
| Luster: |
Adamantine - Metallic | ||
| Streak: |
brownish yellow | ||
Optical Properties of Akaganeite |
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| Optical Data: |
Biaxial (?) | ||
| NCalc= 2.19 - from Gladstone-Dale relationship (KC = 0.3161) where Ncalc=Dcalc*KC+1 NCalc= 1.95 - from Gladstone-Dale relationship (KC = 0.3161) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Akaganeite |
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| Electron Density: |
relectron=3.64 gm/cc |
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| Fermion Index |
Fermion Index = 0.01233 Boson Index = 0.98767 |
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| Photoelectric: |
PEAkaganeite = 18.39 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Akaganeite is Not Radioactive |
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Akaganeite Classification |
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| Dana Class: |
6.1.6.1 (6)Hydroxides and Oxides Containing Hydroxyl | ||
| (6.1)where X+++O OH | |||
| (6.1.6)Dana Group | |||
| Strunz Class: |
IV/F.06-50 IV - Oxides | ||
| IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure | |||
| IV/F.06 - Diaspore - Goethite - Faitknechtite series | |||
Other Akaganeite Information |
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(AmMin, v 88, p 782) | ||
| See Also: |
Links to other databases for Akaganeite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Akaganeite using: Visit our Advertisers for Akaganeite : Translate Akaganeite Mineral Data : Ask about Akaganeite here : Print or Cut-and-Paste your Akaganeite Specimen Label here :
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