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UM1989-21-S:BiCuFePbSe
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Formula:
(Cu,Fe,Pb,Bi)(S,Se)
Reported as "mineral A" and co-described with chemically similar 'UM1989-15-S:AgBiCuFePbSe' ("mineral B").
As "an aggregate, 6 x 20 microns, of crystals l-3 mm, rimmed by "mineral A".
As "an aggregate, 6 x 20 microns, of crystals l-3 mm, rimmed by "mineral A".
Unique Identifiers
Mindat ID:
51634
Long-form identifier:
mindat:1:1:51634:9
Similar Names
| UM1992-23-S:BiCuFePbSb | Pb22.4Cu3.45(Bi15.5Sb15.5)S69 |
Optical Data of UM1989-21-S:BiCuFePbSe
Anisotropism:
air: reddish brown to bluish gray; immersion oil: brown to bluish gray
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 450nm | 31% |
| 500nm | 38% |
| 550nm | 40% |
| 600nm | 41% |
| 650nm | 40% |
| 700nm | 38% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 41%.
Colour in reflected light:
creamy white
Pleochroism:
Weak
Chemistry of UM1989-21-S:BiCuFePbSe
Mindat Formula:
(Cu,Fe,Pb,Bi)(S,Se)
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 UM1989-21-S:BiCuFePbSe
mindat.org URL:
https://www.mindat.org/min-51634.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for UM1989-21-S:BiCuFePbSe
Reference List:
Localities for UM1989-21-S:BiCuFePbSe
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.
Kazakhstan | |
| Gertsen et al. (1989) +1 other reference |
