UM1981-08-E:FeIrPtRhRu
A material that is NOT an approved mineral species
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Formula:
Ir-Fe-Pt-Rh-Ru-O-H ?
Colour:
dark grey (reflected light?)
Low totals are suggestible, according to Smith & Nickel (2007), of the presence of oxygen; calculation (Ł. K.) including oxygen alone shows metal-to-oxygen ratio from ~1:3 (analysis 1) to 1:4 (analysis 2), which would require very high oxidation states; assuming even the highest possible states does not balance the charge. Calculation assuming the phase to be of oxide-hydroxide type gives better results. However, recalculation as (Ir,Fe,...)O(OH) still leaves low totals. Thus, the phase is possibly also hydrated. If so, it might correspond to already database-present
'Unnamed (Ir Oxide-Hydroxide)'.
Discovered as an alteration product replacing (even completely) euhedral osmium inclusions in nuggets of Pt-Fe alloy from the Joubdo stream, Ethiopia. Compare 'UM1981-29-Te:BiRh' from the same site.
'Unnamed (Ir Oxide-Hydroxide)'.
Discovered as an alteration product replacing (even completely) euhedral osmium inclusions in nuggets of Pt-Fe alloy from the Joubdo stream, Ethiopia. Compare 'UM1981-29-Te:BiRh' from the same site.
Unique Identifiers
Mindat ID:
47574
Long-form identifier:
mindat:1:1:47574:1
GUID
(UUID V4):
(UUID V4):
93e460ff-5079-4731-8531-abd0a4bf46c8
Physical Properties of UM1981-08-E:FeIrPtRhRu
Colour:
dark grey (reflected light?)
Optical Data of UM1981-08-E:FeIrPtRhRu
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 18.2% | 7.5% |
420nm | 18.2% | 7.4% |
440nm | 18.1% | 7.2% |
460nm | 18.1% | 7.1% |
480nm | 18.0% | 7.0% |
500nm | 17.9% | 6.9% |
520nm | 17.9% | 6.8% |
540nm | 17.8% | 6.8% |
560nm | 17.8% | 6.7% |
580nm | 17.8% | 6.7% |
600nm | 17.7% | 6.7% |
620nm | 17.7% | 6.7% |
640nm | 17.7% | 6.7% |
660nm | 17.7% | 6.6% |
680nm | 17.7% | 6.6% |
700nm | 17.7% | 6.6% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 18.2%.
R1 shown in black, R2 shown in red
Internal Reflections:
present
Comments:
Color values (air/oil): 0.309/0.305 (x); 0.315/0.310 (y); 17.8/6.8 (Y); 478/474 (lambda d); 0.8/2.8 (Pe)
Chemical Properties of UM1981-08-E:FeIrPtRhRu
Formula:
Ir-Fe-Pt-Rh-Ru-O-H ?
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.
References for UM1981-08-E:FeIrPtRhRu
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Cabri, L.J., Criddle, A.J., Laflamme, J.H.G., Bearne, G.S., Harris, D.C. (l981): Mineralogical study of complex Pt-Fe nuggets from Ethiopia. Bull. Minéral.: 104: 508-525; in: Fleischer, M., Cabri, L.J., Chao, G.Y., Mandarino, J.A., Pabst, A. (1982): New mineral names. American Mineralgogist: 67: 1079
Smith, D.G.W., Nickel, E.H. (2007): A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Canadian Mineralogist: 45: 983-1055; http://nrmima.nrm.se (2016)
Internet Links for UM1981-08-E:FeIrPtRhRu
mindat.org URL:
https://www.mindat.org/min-47574.html
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Localities for UM1981-08-E:FeIrPtRhRu
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Ethiopia | |
| Cabri, L.J., Criddle, A.J., Laflamme, J.H.G., Bearne, G.S., Harris, D.C. (l981): Mineralogical study of complex Pt-Fe nuggets from Ethiopia. Bull. Minéral.: 104: 508-525; in: Fleischer, M., Cabri, L.J., Chao, G.Y., Mandarino, J.A., Pabst, A. (1982): New mineral names. American Mineralgogist: 67: 1079 |