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Ferrohogbomite-2N2S Mineral Data
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General Ferrohogbomite-2N2S Information
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 Chemical Formula: |
(Fe++,Zn,Mg,Al)6Al14(Ti,Fe)2O30(OH)2 |
| Composition: |
Molecular Weight = 1,269.78 gm |
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Magnesium 1.99 % Mg 3.30 % MgO |
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Titanium 3.05 % Ti 5.10 % TiO2 |
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Manganese 0.22 % Mn 0.28 % MnO |
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Aluminum 31.66 % Al 59.82 % Al2O3 |
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Zinc 4.79 % Zn 5.96 % ZnO |
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Chromium 0.08 % Cr 0.12 % Cr2O3 |
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Gallium 0.16 % Ga 0.22 % Ga2O3 |
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Iron 18.47 % Fe 16.47 % FeO / 8.11 % Fe2O3 |
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Silicon 0.02 % Si 0.05 % SiO2 |
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Nickel 0.05 % Ni 0.06 % NiO |
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Tin 0.28 % Sn 0.36 % SnO2 |
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Hydrogen 0.16 % H 1.43 % H2O |
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Oxygen 39.06 % O |
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______ ______ |
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100.00 % 101.27 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+2.91Zn0.93Mg1.04Mn2+0.05Ni0.01Al1.06Al13.84Fe3+1.29Ti0.81Ga0.03Sn0.03Cr0.02Si0.01
O28.98(OH)2.02 |
| Environment: |
Metamorphic environments (T 500 to 730 deg C) ultrahigh-temperature granulite-facies. (h�gbomite group; structure). |
| IMA Status: |
Approved IMA 2002 (Dana # Added) |
| Locality: |
Ain Taiba, Grand Erg Oriental, Algerian Sahara. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the Fe-dominant member of the hogbomite series. |
| Synonym: |
Hogbomite-8H |
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IMA2001-048 |
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Ferrohogbomite-2N2S Image |
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Images:
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Ferrohogbomite-2N2S
Comments: Photomicrograph of euhedral ferrohogbomite-2N2S grains (Hog) in magnetite (Mgt). (MinMag, v 67, p 1084).
Location: Eastern Ghats belt, Andhra Pradesh, India.
Scale: See Image.
© Mineralogical Magazine |
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Ferrohogbomite-2N2S Crystallography
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| Axial Ratios: |
a:c = 1:3.20675 |
| Cell Dimensions: |
a = 5.712, c = 18.317, Z = 1; V = 517.56 Den(Calc)= 4.07 |
| Crystal System: |
Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc |
| X Ray Diffraction: |
By Intensity(I/Io): 2.427(1)(114), 2.603(0.88)(016), 1.43(0.56)(220),2.86(0.53)(110), 1.475(0.44)(0.2.10), 1.597(0.34)(126), 2.053(0.34)(025), 2.948(0.32)(015), 2.392(0.28)(022), |
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Physical Properties of Ferrohogbomite-2N2S
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| Cleavage: |
{001} Distinct |
| Color: |
Chestnut brown. |
| Diaphaneity: |
Translucent |
| Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. |
| Habit: |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. |
| Habit: |
Hexagonal - Six-sided crystal shape in cross-section or habit. |
| Hardness: |
6-7 - Orthoclase-Quartz |
| Luster: |
Adamantine |
| Streak: |
brown |
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Optical Properties of Ferrohogbomite-2N2S
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| Gladstone-Dale: |
CI calc= 0.076 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2063,KC= 0.2232
Ncalc = 1.91 |
| Optical Data: |
Uniaxial (-), e=1.827, w=1.852, bire=0.0250. |
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Calculated Properties of Ferrohogbomite-2N2S
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| Electron Density: |
Bulk Density (Electron Density)=3.95 gm/cc
note: Specific Gravity of Ferrohogbomite-2N2S =4.07 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PEFerrohogbomite-2N2S = 10.35 barns/electron
U=PEFerrohogbomite-2N2S x rElectron Density= 40.85 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ferrohogbomite-2N2S is Not Radioactive |
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Ferrohogbomite-2N2S Classification
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| Dana Class: |
07.11.07.05 (07)Multiple Oxides |
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(07.11)as titano-oxides with [4] and [6] substitutions |
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(07.11.07)Hogbomite Group (Ti>Sn) |
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07.11.07.01 Magnesiohogbomite-2N3S (Mg,Fe)1.4Ti0.3Al4O8 P 63mc 6mm |
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07.11.07.02 Magnesiohogbomite-2N2S (Al,Fe,Fe,Mg,Ti,Zn)11O15(OH) P 63mc 6mm |
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07.11.07.03 Magnesiohogbomite-6N6S (Mg,Fe)1.4Ti0.3Al4O8 R 3m 3 2/m |
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07.11.07.04 Zincohogbomite-2N2S! (Zn,Fe)(2-2x)(Ti)xAl4O8 P 63mc 6mm |
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07.11.07.05 Ferrohogbomite-2N2S! (Fe,Zn,Mg,Al)6Al14(Ti,Fe)2O30(OH)2 P 63mc 6mm |
| Strunz Class: |
04.CB.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.C - Metal:Oxygen = 2:3, 3:5, and Similar |
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04.CB -With medium-sized cations |
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04.CB.20 Magnesiohogbomite-6N6S (Mg,Fe)1.4Ti0.3Al4O8 R 3m 3 2/m |
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04.CB.20 Magnesiohogbomite-2N3S (Mg,Fe)1.4Ti0.3Al4O8 P 63mc 6mm |
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04.CB.20 Magnesiohogbomite-2N2S (Al,Fe,Fe,Mg,Ti,Zn)11O15(OH) P 63mc 6mm |
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04.CB.20 Zincohogbomite-2N2S! (Zn,Fe)(2-2x)(Ti)xAl4O8 P 63mc 6mm |
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04.CB.20 Ferrohogbomite-2N2S! (Fe,Zn,Mg,Al)6Al14(Ti,Fe)2O30(OH)2 P 63mc 6mm |
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Other Ferrohogbomite-2N2S Information
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| References: |
NAME( AmMin, 88:1176) PHYS. PROP.(AmMin, 88:1176) OPTIC PROP.(AmMin, 88:1176) |
| See Also: |
Links to other databases for Ferrohogbomite-2N2S :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Ferrohogbomite-2N2S Specimen Label here :
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Ferrohogbomite-2N2S
(Fe++,Zn,Mg,Al)6Al14(Ti,Fe)2O30(OH)2
Dana No: 07.11.07.05 Strunz No: 04.CB.20
Locality:
Notes:
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