Hafnon Mineral Data + 
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- 51.5.2.1 Zircon ZrSiO4 I 41/amd 4/m 2/m 2/m
- 51.5.2.2 Hafnon HfSiO4 I 41/amd 4/m 2/m 2/m
- 51.5.2.3 Thorite ThSiO4 I 41/amd 4/m 2/m 2/m
- 51.5.2.4 Coffinite U(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m
- 51.5.2.5 Thorogummite Th(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m
- VIII/A.09-05 Reidite! ZrSiO4 I 41/a 4/m
- VIII/A.09-10 Zircon ZrSiO4 I 41/amd 4/m 2/m 2/m
- VIII/A.09-20 Hafnon HfSiO4 I 41/amd 4/m 2/m 2/m
- VIII/A.09-30 Thorite ThSiO4 I 41/amd 4/m 2/m 2/m
- VIII/A.09-40 Coffinite U(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m
- VIII/A.09-50 Thorogummite Th(SiO4)1-x(OH)4x I 41/amd 4/m 2/m 2/m
General Hafnon Information |
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 Chemical Formula: |
HfSiO4 | ||
| Composition: |
Molecular Weight = 270.57 gm | ||
| Hafnium 65.97 % Hf 77.79 % HfO2 | |||
| Silicon 10.38 % Si 22.21 % SiO2 | |||
| Oxygen 23.65 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Hf(SiO4) | ||
| IMA Status: |
Approved IMA 1974 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 59111 | ||
| PDF 20-467 | |||
Search for Hafnon Images | |||
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Images:
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Hafnon Crystallography |
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| Axial Ratios: |
a:c = 1:0.90729 | ||
| Cell Dimensions: |
a = 6.5725, c = 5.9632, Z = 4; V = 257.60 Den(Calc)= 6.98 | ||
| Crystal System: |
Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.29(1), 2.512(0.7), 4.43(0.6), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Hafnon |
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| Cleavage: |
[???] Indistinct | ||
| Color: |
Colorless, Brownish, Yellow. | ||
| Density: |
6.97 | ||
| Diaphaniety: |
Transparent | ||
| Hardness: |
7.5 - Garnet | ||
| Luster: |
Vitreous - Adamantine | ||
| Streak: |
gray white | ||
Optical Properties of Hafnon |
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| Gladstone-Dale: |
CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.14,KPDmeas= 0.1402,KC= 0.1357 |
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| Optical Data: |
Uniaxial (+), w=1.93-1.97, e=1.98-2.03, bire=0.0500-0.0600. | ||
Calculated Properties of Hafnon |
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| Electron Density: |
relectron=6.09 gm/cc |
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| Fermion Index |
Fermion Index = 0.21757 Boson Index = 0.78243 |
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| Photoelectric: |
PEHafnon = 741.47 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hafnon is Not Radioactive |
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Hafnon Classification |
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| Dana Class: |
51.5.2.2 (51)Nesosilicate Insular SiO4 Groups Only | ||
| (51.5)with cations in >[6] coordination | |||
| (51.5.2)Zircon group | |||
| Strunz Class: |
VIII/A.09-20 VIII - Silicates | ||
| VIII/A - Nesosilicates with [SiO4]4-groups, cations of octahedral and cubic orientation [8+6] | |||
| VIII/A.09 - Zircon - Thorogummite series | |||
Other Hafnon Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Hafnon : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 - Mineral and Gemstone Kingdom 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 -University of Colorado - Mineral Structure Data 15 - WWW-MINCRYST 16 -École des Mines de Paris Search for Hafnon using: Visit our Advertisers for Hafnon : Translate Hafnon Mineral Data : Ask about Hafnon here : Print or Cut-and-Paste your Hafnon Specimen Label here :
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