Magnesiohogbomite-2N2S Mineral Data

General Magnesiohogbomite-2N2S Information

Chemical Formula:

(Al,Fe++,Fe+++,Mg,Ti,Zn)11O15(OH)

Composition:

Molecular Weight = 423.03 gm

Magnesium 3.45 % Mg 5.72 % MgO

Titanium 3.40 % Ti 5.66 % TiO₂

Aluminum 31.89 % Al 60.26 % Al₂O₃

Zinc 3.09 % Zn 3.85 % ZnO

Iron 17.16 % Fe 16.98 % FeO / 5.66 % Fe₂O₃

Hydrogen 0.17 % H 1.49 % H₂O

Oxygen 40.85 % O

______ ______

100.00 % 99.62 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺Fe³⁺_0.3Mg_0.6Zn_0.2Al₅Ti_0.3O_10.1(OH)_0.7

Environment:

Metamorphosed iron ore deposits.

IMA Status:

Approved IMA 1963

Locality:

Ruoutevare district, Lapland, Norway. Link to MinDat.org Location Data.

Name Origin:

Named for Arvid Gustaf Hogbom (1857-1940), Swedish geologist, University of Upplala and the crystal structure. (S=Spinel, N=Nolanite Layers).

Synonym:

Hoegbomite

Hogbomite-8H

IMA2001-A

Magnesiohogbomite-2N2S Image

Images:

Magnesiohogbomite-2N2S

Comments: Massive, fine-grained magnesiohogbomite-2N2S.
Location: Ruoutevare, Kvikkjokk, Lappland, Sweden. Scale: Specimen Size 3 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Magnesiohogbomite-2N2S Crystallography

Axial Ratios:

a:c = 1:3.20701

Cell Dimensions:

a = 5.734, c = 18.389, Z = 3; V = 523.61 Den(Calc)= 4.02

Crystal System:

Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 6₃mc

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.43(1), 1.43(0.5), 2.6(0.5),1.47(0.3), 2.89(0.3), 1.6(0.2), 2.05(0.2), 2.94(0.2),

Physical Properties of Magnesiohogbomite-2N2S

Cleavage:

{0001} Imperfect

Color:

Black.

Density:

3.81

Diaphaneity:

Subtranslucent to opaque

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

6.5 - Pyrite

Luster:

Adamantine

Streak:

gray

Optical Properties of Magnesiohogbomite-2N2S

Gladstone-Dale:

CI meas= 0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.057 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2069,KPDmeas= 0.2183,KC= 0.2193
Ncalc = 1.84 - 1.88

Optical Data:

Uniaxial (-), e=1.803-1.823, w=1.848-1.853, bire=0.0300-0.0450.

RL Anisotrophism:

Distinct.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Magnesiohogbomite-2N2S in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	9.74	10.20
420 nm	9.28	9.79
440 nm	8.91	9.37
460 nm	8.55	9.08
480 nm	8.40	8.91
500 nm	8.31	8.88
520 nm	8.27	8.80
540 nm	8.21	8.75
560 nm	8.16	8.70
580 nm	8.15	8.70
600 nm	8.17	8.70
620 nm	8.20	8.71
640 nm	8.24	8.73
660 nm	8.31	8.74
680 nm	8.30	8.75
700 nm	8.37	8.77

**Calculated Relative Intensity Colors of Magnesiohogbomite-2N2S in Air**
Relative Intensity	0%	100%	200%	300%	400%	500%	600%	700%	800%	900%	1000%
R₁
R₂

Calculated Properties of Magnesiohogbomite-2N2S

Electron Density:

Bulk Density (Electron Density)=3.71 gm/cc
note: Specific Gravity of Magnesiohogbomite-2N2S =3.81 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Magnesiohogbomite-2N2S}= 8.22 barns/electron
U=PE_{Magnesiohogbomite-2N2S} x rElectron Density= 30.47 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Magnesiohogbomite-2N2S is Not Radioactive

Magnesiohogbomite-2N2S Classification

Dana Class:

07.11.07.02 (07)Multiple Oxides

(07.11)as titano-oxides with [4] and [6] substitutions

(07.11.07)Hogbomite Group (Ti>Sn)

07.11.07.01 Magnesiohogbomite-2N3S (Mg,Fe)1.4Ti0.3Al4O8 P 6₃mc 6mm

07.11.07.02 Magnesiohogbomite-2N2S (Al,Fe,Fe,Mg,Ti,Zn)11O15(OH) P 6₃mc 6mm

07.11.07.03 Magnesiohogbomite-6N6S (Mg,Fe)1.4Ti0.3Al4O8 R 3m 3 2/m

07.11.07.04 Zincohogbomite-2N2S! (Zn,Fe)(2-2x)(Ti)xAl4O8 P 6₃mc 6mm

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

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CB -With medium-sized cations

04.CB.20 Magnesiohogbomite-6N6S (Mg,Fe)1.4Ti0.3Al4O8 R 3m 3 2/m

04.CB.20 Magnesiohogbomite-2N3S (Mg,Fe)1.4Ti0.3Al4O8 P 6₃mc 6mm

04.CB.20 Magnesiohogbomite-2N2S (Al,Fe,Fe,Mg,Ti,Zn)11O15(OH) P 6₃mc 6mm

04.CB.20 Zincohogbomite-2N2S! (Zn,Fe)(2-2x)(Ti)xAl4O8 P 6₃mc 6mm

04.CB.20 Ferrohogbomite-2N2S! (Fe,Zn,Mg,Al)6Al14(Ti,Fe)2O30(OH)2 P 6₃mc 6mm

Other Magnesiohogbomite-2N2S Information

References:

NAME( Ford32) PHYS. PROP.(Ford32) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Magnesiohogbomite-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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Magnesiohogbomite-2N2S

(Al,Fe++,Fe+++,Mg,Ti,Zn)11O15(OH)
Dana No: 07.11.07.02 Strunz No: 04.CB.20
Locality:

Notes:

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