Hibonite Mineral Data (original) (raw)

General Hibonite Information

Help on Chemical Formula: Chemical Formula:

(Ca,Ce)(Al,Ti,Mg)12O19

Help on Composition: Composition:

Molecular Weight = 708.81 gm

Calcium 4.52 % Ca 6.33 % CaO

Lanthanum 1.96 % La 2.30 % La2O3

Cerium 1.98 % Ce 2.32 % Ce2O3

Magnesium 0.17 % Mg 0.28 % MgO

Titanium 3.38 % Ti 5.63 % TiO2

Aluminum 39.59 % Al 74.80 % Al2O3

Iron 5.52 % Fe 7.10 % FeO

Oxygen 42.89 % O

______ ______

100.00 % 98.76 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ca0.8Ce0.1La0.1Al10.4Ti0.5Fe2+0.7Mg0.05O19

Help on Environment: Environment:

In metamorphosed limestone, pyroxenite, gneiss, and granulate of the amphibolite to granulite facies.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1956

Help on Locality: Locality:

Esiva, near Taolanaro (Fort Dauphin), and near Ambindandrakemba, Madagascar. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Paul Hibon, who discovered the mineral.

Help on Name Pronunciation: Name Pronunciation:

Hibonite Say HIBONITE

Hibonite Image

Click Here for Larger Hibonite Image in a New Browser Window Images:

Click Here for Larger Hibonite Image Hibonite Comments: Crystalline spire-like specimen of hibonite. Location: Ambindandrakemba, Madagascar.Scale: 2.1 x 1.5 cm. © John Veevaert

Hibonite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:3.93457

Help on Cell Dimensions: Cell Dimensions:

a = 5.564, c = 21.892, Z = 2; V = 586.94 Den(Calc)= 4.01

Help on Crystal System: Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.505(1), 2.648(0.8), 2.812(0.6),

Click Here for Large Hibonite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
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Help on Above

| | Bermanec V , Holtstam D , Sturman D , Criddle A J , Back M E , Scavnicar S , The Canadian Mineralogist , 34 (1996) p.1287-1297, Nezilovite, a new member of the magnetoplumbite group, and the crystal, chemistry of mognetoplumbite and hibonite | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Hibonite

Help on Cleavage: Cleavage:

{0001} Good, {1010} Parting

Help on Color: Color:

Black, Black, Reddish brown.

Help on Density: Density:

3.84

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.

Help on Habit: Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Help on Hardness: Hardness:

7.5-8

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

reddish brown

Optical Properties of Hibonite

Help on Dichroism (e): Dichroism (e):

gray.

Help on Dichroism (w): Dichroism (w):

brownish gray.

Help on Optical Data: Optical Data:

Uniaxial (-).

NCalc= 1.85 - from Gladstone-Dale relationship (KC = 0.2109) where Ncalc=Dcalc*KC+1
NCalc= 1.81 - from Gladstone-Dale relationship (KC = 0.2109) where Ncalc=Dmeas*KC+1

Calculated Properties of Hibonite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.90 gm/cc
note: Specific Gravity of Hibonite =4.01 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0059923554
Boson Index = 0.9940076446

Help on Photoelectric: Photoelectric:

PEHibonite = 22.00 barns/electron
U=PEHibonite x relectron= 85.75 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 4,081.56 (Gamma Ray American Petroleum Institute Units)
Concentration of Hibonite per GRapi unit = 245.00 (PPM)

Hibonite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Hibonite - mild

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor One Hour
1000 gm / 7.81 cm 88,177 2.38E-06 4,081.56 1.34
100 gm / 3.62 cm 8,818 2.38E-07 408.16 0.13
10 gm / 1.68 cm 882 2.38E-08 40.82 0.01
1 gm / 7.81 mm 88 2.38E-09 4.08 0.00
0.1 gm / 3.62 mm 9 2.38E-10 0.41 0.00
0.01 gm / 1.68 mm 1 2.38E-11 0.04 0.00
0.001 gm / 0.78 mm 0 2.38E-12 0.00 0.00

Weight of pure Hibonite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.01 gm/cc.*
Goverment Estimate of Average Annual Exposure (360 mRem)**
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.20 % Th) From Sum REE Elements ( 3.94 % REE)

Hibonite Classification

Help on Dana Class: Dana Class:

07.04.01.01 (07)Multiple Oxides

(07.04)with O19 groups

(07.04.01)(Hexagonal, P63/mmc)

07.04.01.01 Hibonite (Ca,Ce)(Al,Ti,Mg)12O19 P 63/mmc 6/m 2/m 2/m

07.04.01.02 Yimengite K(Cr,Ti,Fe,Mg)12O19 P 63/mmc 6/m 2/m 2/m

07.04.01.03 Hawthorneite Ba[Ti3Cr4Fe4Mg]O19 P 63/mmc 6/m 2/m 2/m

Help on Strunz Class: Strunz Class:

04.CC.45 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.CC -With large and medium-sized cations

04.CC.45 Hawthorneite Ba[Ti3Cr4Fe4Mg]O19 P 63/mmc 6/m 2/m 2/m

04.CC.45 Diaoyudaoite NaAl11O17 P 63/mmc 6/m 2/m 2/m

04.CC.45 Magnetoplumbite Pb(Fe,Mn)12O19 P 63/mmc 6/m 2/m 2/m

04.CC.45 Haggertyite! Ba[Fe6Ti5Mg]O19 P 63/mmc 6/m 2/m 2/m

04.CC.45 Batiferrite! Ba(Ti2Fe8Fe2)O19 P 63/mmc 6/m 2/m 2/m

04.CC.45 Hibonite (Ca,Ce)(Al,Ti,Mg)12O19 P 63/mmc 6/m 2/m 2/m

04.CC.45 Nezilovite! PbZn2(Mn,Ti)2Fe8O19 P 63/mmc 6/m 2/m 2/m

04.CC.45 Lindqvistite Pb2(Mn,Mg)Fe16027 P 63/mmc 6/m 2/m 2/m

04.CC.45 Plumboferrite Pb2Fe(11-x)MnxO19-2x(x=1/3) P 63/mmc 6/m 2/m 2/m

04.CC.45 Yimengite K(Cr,Ti,Fe,Mg)12O19 P 63/mmc 6/m 2/m 2/m

Other Hibonite Information

Help on References: References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)

Help on See Also: See Also:

Links to other databases for Hibonite :
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 - HyperPhysics
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info

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Ask about Hibonite here :
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Print or Cut-and-Paste your Hibonite Specimen Label here :

Hibonite

(Ca,Ce)(Al,Ti,Mg)12O19
Dana No: 07.04.01.01 Strunz No: 04.CC.45
Locality:

Notes: