UM1981-29-Te:BiRh
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Formula:
Rh(Te,Bi)2
Crystal System:
Isometric
May correspond to synthetic α-Rh(Te,Bi)2 or RhTeBi. If the latter is true, then the phase may correspond to 'Unnamed (Rh-analogue of Michenerite)'.
Found within a nugget of Pt-Fe alloy in the Joubdo stream, Ethiopia. It forms irregular and lenticular inclusions, up to 10 x 20 microns in size. May be closely associated with cubanite. One of a few PGE phases from the site (compare 'UM1981-08-E:FeIrPtRhRu').
Found within a nugget of Pt-Fe alloy in the Joubdo stream, Ethiopia. It forms irregular and lenticular inclusions, up to 10 x 20 microns in size. May be closely associated with cubanite. One of a few PGE phases from the site (compare 'UM1981-08-E:FeIrPtRhRu').
Unique Identifiers
Mindat ID:
47587
Long-form identifier:
mindat:1:1:47587:5
Optical Data of UM1981-29-Te:BiRh
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 49.3% | 34.5% |
| 420nm | 49.7% | 34.5% |
| 440nm | 50.2% | 35.0% |
| 460nm | 50.5% | 35.2% |
| 480nm | 50.8% | 35.9% |
| 500nm | 51.0% | 36.6% |
| 520nm | 51.3% | 36.9% |
| 540nm | 51.5% | 37.1% |
| 560nm | 51.7% | 37.2% |
| 580nm | 51.9% | 37.2% |
| 600nm | 52.0% | 37.5% |
| 620nm | 52.1% | 37.5% |
| 640nm | 52.3% | 37.6% |
| 660nm | 52.3% | 37.6% |
| 680nm | 52.4% | 37.4% |
| 700nm | 52.5% | 37.5% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 52.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
pale gray (in air and oil, likely in the reflected light)
Comments:
Color values (air/oil): 0.313/0.315 (x); 0.319/0.323 (y); 51.6/37.1 (Y); 576/574 (lambda d); 1.6/3.1 (Pe)
Chemistry of UM1981-29-Te:BiRh
Mindat Formula:
Rh(Te,Bi)2
Elements listed:
Crystallography of UM1981-29-Te:BiRh
Crystal System:
Isometric
Cell Parameters:
a = 6.441 or 6.504 Å
Unit Cell V:
267.21 ų (Calculated from Unit Cell)
Comment:
data for synthetic compounds, α-RhTe2 or RhBiTe
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for UM1981-29-Te:BiRh
mindat.org URL:
https://www.mindat.org/min-47587.html
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References for UM1981-29-Te:BiRh
Reference List:
Cabri, Louis J., Criddle, Alan J., Laflamme, J. H. Gilles, Bearne, Graham S., Harris, Donald C. (1981) Mineralogical study of complex Pt-Fe nuggets from Ethiopia. Bulletin de Minéralogie, 104 (4) 508-525 doi:10.3406/bulmi.1981.7501(Abs. in: Fleischer, M., Cabri, L.J., Chao, G.Y., Mandarino, J.A., Pabst, A. (1982): New mineral names. American Mineralogist: 67: 1079)
Localities for UM1981-29-Te:BiRh
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Ethiopia | |
| Cabri et al. (1981) +1 other reference |
