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General Roaldite Information |
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 Chemical Formula: |
(Fe,Ni)4N | ||
| Composition: |
Molecular Weight = 237.96 gm | ||
| Iron 89.18 % Fe | |||
| Nickel 4.93 % Ni | |||
| Nitrogen 5.89 % N | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Fe2+3.8Ni0.2N | ||
| Environment: |
Platelets in kamacite phase of coarse octahedrites. | ||
| IMA Status: |
Approved IMA 1981 | ||
| Locality: |
Jerslev meteorite, Sjaelland, Denmark and Youndegin meteorite, Avon, Western Australia, Australia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named in 1981 for Roald Nielsen (b.1928), Danish metallurgist. | ||
| Name Pronunciation: |
Roaldite  |
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| Synonym: |
ICSD 79980 | ||
| PDF 6-627 | |||
Search for Roaldite Images | |||
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Images:
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Roaldite Crystallography |
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| Cell Dimensions: |
a = 3.79, Z = 1; V = 54.44 Den(Calc)= 7.26 | ||
| Crystal System: |
Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: P 43m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.191(1), 1.144(0.85), 1.897(0.75), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Roaldite |
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| Color: |
Tin white. | ||
| Density: |
7.21 | ||
| Diaphaneity: |
Opaque | ||
| Hardness: |
5.5-6.5 - Knife Blade-Pyrite | ||
| Luster: |
Metallic | ||
Calculated Properties of Roaldite |
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| Electron Density: |
Bulk Density (Electron Density)=6.80 gm/cc note: Specific Gravity of Roaldite =7.26 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.07 Boson Index = 0.93 |
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| Photoelectric: |
PERoaldite = 29.58 barns/electron U=PERoaldite x rElectron Density= 201.06 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Roaldite is Not Radioactive |
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Roaldite Classification |
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| Dana Class: |
01.01.18.02 (01)Native Elements | ||
| (01.01)with metallic elements other than the platinum group | |||
| (01.01.18)Dana Group | |||
| Strunz Class: |
01.BC.05 01 - ELEMENTS (Metals and intermetallic alloys; metalloids and nonmetals; carbides, silicides, nitrides, phosphides) | ||
| 01.B - Metallic Carbides, Silicides, Nitrides and Phosphides | |||
| 01.BC -Nitrides | |||
Other Roaldite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Roaldite : 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 - MinDAT 10 - Mineralienatlas (Deutsch) 11 - Online Mineral Museum 12 - QUT Mineral Atlas 13 - Ruff.Info Search for Roaldite using: Visit our Advertisers for Roaldite : A Bijoux Google Search for RoalditeAdam's Minerals Google Search for Roaldite Cape Minerals Google Search for Roaldite Dakota Matrix Minerals Google Search for Roaldite Excalibur Mineral Corp. Google Search for Roaldite Exceptional Minerals Google Search for Roaldite John Betts Fine Minerals Search for Roaldite McDougall Minerals Google Search for Roaldite Mineral News Website Link Rock and Mineral Shows Google Search for Roaldite Weinrich Minerals, Inc. Google Search for Roaldite Ask about Roaldite here : Print or Cut-and-Paste your Roaldite Specimen Label here :
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