| Chengdeite Mineral Data |
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- 1.2.5.1 Isoferroplatinum (Pt,Pd)3(Fe,Cu) P m3m 4/m 3 2/m
- 1.2.5.2 Rustenburgite (Pt,Pd)3Sn F m3m 4/m 3 2/m
- 1.2.5.3 Atokite (Pd,Pt)3Sn F m3m 4/m 3 2/m
- 1.2.5.4 Zvyagintsevite (Pd,Pt,Au)3(Pb,Sn) P m3m 4/m 3 2/m
- 1.2.5.5 Chengdeite Ir3Fe P m3m 4/m 3 2/m
- 1.2.5.6 Yixunite! Pt3In P m3m 4/m 3 2/m
- I/A.15-05 Chengdeite Ir3Fe P m3m 4/m 3 2/m
- I/A.15-10 Isoferroplatinum (Pt,Pd)3(Fe,Cu) P m3m 4/m 3 2/m
- I/A.15-20 Tetraferroplatinum PtFe P 4/mmm 4/m 2/m 2/m
- I/A.15-30 Tulameenite Pt2FeCu P 4/mm 4/m 2/m 2/m
- I/A.15-40 Ferronickelplatinum Pt2FeNi P 4/mmm 4/m 2/m 2/m
General Chengdeite Information |
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 Chemical Formula: |
Ir3Fe | ||
| Composition: |
Molecular Weight = 632.51 gm | ||
| Iron 8.83 % Fe | |||
| Iridium 91.17 % Ir | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Ir3Fe0+ | ||
| Environment: |
In placer concentrations and chromate ores in ultrabasic rocks. | ||
| IMA Status: |
Approved IMA 1995 | ||
| Locality: |
At the branch of the Luan river (about 200 km NNE of Beijing) in Chengde County, Peoples Republic of China. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named after its locality. | ||
| Synonym: |
ICSD 56264 | ||
| IMA1994-023 | |||
| PDF 49-1824 | |||
Search for Chengdeite Images | |||
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Images:
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Chengdeite Crystallography |
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| Cell Dimensions: |
a = 3.792, Z = 1; V = 54.53 Den(Calc)= 19.26 | ||
| Crystal System: |
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: P m3m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 1.142(1), 1.094(0.8), 2.18(0.8), | ||
Physical Properties of Chengdeite |
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| Cleavage: |
None | ||
| Color: |
Steel black. | ||
| Density: |
19.3 | ||
| Diaphaniety: |
Opaque | ||
| Fracture: |
Hackly - Jagged, torn surfaces, (e.g. fractured metals). | ||
| Habit: |
Nuggets - Irregular lumps produced by stream transport of malleable metals. | ||
| Hardness: |
5 - Apatite | ||
| Luster: |
Metallic | ||
| Streak: |
black | ||
Calculated Properties of Chengdeite |
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| Electron Density: |
relectron=15.7 gm/cc |
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| Fermion Index |
Fermion Index = 0.00187 Boson Index = 0.99813 |
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| Photoelectric: |
PEChengdeite =1,393.05 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chengdeite is Not Radioactive |
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Chengdeite Classification |
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| Dana Class: |
1.2.5.5 (1)Native Elements | ||
| (1.2)with platinum group metals and alloys | |||
| (1.2.5)Isoferroplatinum group (Space Group Pm3m) | |||
| Strunz Class: |
I/A.15-05 I - Elements | ||
| I/A - Metallic and intermetallic compounds, Platinum-Iron-compounds with Tin/Lead and related compunds | |||
| I/A.15 - Isoferroplatinum - Ferronickelplatinum series | |||
Other Chengdeite Information |
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| References: |
NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,1996) | ||
| See Also: |
Links to other databases for Chengdeite : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 -Athena 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas Search for Chengdeite using: Visit our Advertisers for Chengdeite : Translate Chengdeite Mineral Data : Ask about Chengdeite here : Print or Cut-and-Paste your Chengdeite Specimen Label here :
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