Hafnon Mineral Data (original) (raw)

General Hafnon Information

Help on Chemical Formula: Chemical Formula:

HfSiO4

Help on Composition: Composition:

Molecular Weight = 244.28 gm

Hafnium 58.45 % Hf 68.93 % HfO2

Zirconium 2.24 % Zr 3.03 % ZrO2

Silicon 13.11 % Si 28.04 % SiO2

Oxygen 26.20 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Hf0.8Zr0.06Si1.14O4

Help on Environment: Environment:

Found in tantalum-bearing granite pegmatites and in a weathered pegmatite.

Help on IMA Status: IMA Status:

Approved IMA 1974

Help on Locality: Locality:

(Zambezia district, Mozambique and Mt. Holland, Western Australia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the composition containing hafnium.

Help on Name Pronunciation: Name Pronunciation:

Hafnon Say HAFNON

Help on Synonym: Synonym:

ICSD 59111

PDF 20-467

Hafnon Image

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

Click Here for Larger Hafnon Image Hafnon Comments: Colorless unconsolidated hafnon grains, sample is from Speer and Cooper (1982). Location: Synthetic from Alex Speer.Scale: See Image. © Rruff Database

Hafnon Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:0.90729

Help on Cell Dimensions: Cell Dimensions:

a = 6.5725, c = 5.9632, Z = 4; V = 257.60 Den(Calc)= 6.30

Help on Crystal System: Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.29(1), 2.512(0.7), 4.43(0.6),

Click Here for Large Hafnon Structure Window Crystal Structure:

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| | Speer J A , Cooper B J , American Mineralogist , 67 (1982) p.804-808, Crystal structure of synthetic hafnon, HfSiO4, comparison with zircon and the, actinide orthosilicates | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Hafnon

Help on Cleavage: Cleavage:

{???} Indistinct

Help on Color: Color:

Colorless, Brownish, Yellow.

Help on Density: Density:

6.97

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Hardness: Hardness:

7.5 - Garnet

Help on Luster: Luster:

Vitreous - Adamantine

Help on Streak: Streak:

gray white

Optical Properties of Hafnon

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.026 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.078 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1552,KPDmeas= 0.1402,KC= 0.144
Ncalc = 1.91 - 2

Help on Optical Data: Optical Data:

Uniaxial (+), w=1.93-1.97, e=1.98-2.03, bire=0.0500-0.0600.

Calculated Properties of Hafnon

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=6.16 gm/cc
note: Specific Gravity of Hafnon =6.97 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.19
Boson Index = 0.81

Help on Photoelectric: Photoelectric:

PEHafnon = 651.76 barns/electron
U=PEHafnon x rElectron Density=4,015.37 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hafnon is Not Radioactive

Hafnon Classification

Help on Dana Class: Dana Class:

51.05.02.02 (51)Nesosilicate Insular SiO4 Groups Only

(51.05)with cations in >[6] coordination

(51.05.02)Zircon group

51.05.02.01 Zircon ZrSiO4 I 41/amd 4/m 2/m 2/m

51.05.02.02 Hafnon HfSiO4 I 41/amd 4/m 2/m 2/m

51.05.02.03 Thorite ThSiO4 I 41/amd 4/m 2/m 2/m

51.05.02.04 Coffinite U(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m

51.05.02.05 Thorogummite Th(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m

51.05.02.06 IMA2008-035! CeSiO4 I 41/amd 4mm

Help on Strunz Class: Strunz Class:

09.AD.30 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AD -Nesosilicates without additional anions;

09.AD.30 Coffinite U(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m

09.AD.30 Hafnon HfSiO4 I 41/amd 4/m 2/m 2/m

09.AD.30 Thorite ThSiO4 I 41/amd 4/m 2/m 2/m

09.AD.30 Thorogummite Th(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m

09.AD.30 Zircon ZrSiO4 I 41/amd 4/m 2/m 2/m

09.AD.30 IMA2008-035! CeSiO4 I 41/amd 4mm

Other Hafnon Information

Help on References: References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Hafnon :
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 - Mineral and Gemstone Kingdom
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - University of Colorado - Mineral Structure Data
17 - WWW-MINCRYST
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

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

Hafnon

HfSiO4
Dana No: 51.05.02.02 Strunz No: 09.AD.30
Locality:

Notes: