UM1984-25-S:BiCuSe
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Formula:
Cu3+xBi5-x(S,Se)9
Occurs as not abundant grains, usually below 70-100 microns, in association with aikinite, bismuth, chalcopyrite, Cu-Sn sulfides, emplectite, and laitakarite.
Described together with 'UM1984-22-S:AsCuSbSn' and 'UM1984-24-S:BiCuPbSe'.
Described together with 'UM1984-22-S:AsCuSbSn' and 'UM1984-24-S:BiCuPbSe'.
Unique Identifiers
Mindat ID:
47763
Long-form identifier:
mindat:1:1:47763:3
Similar Names
| UM1979-17-S:BiCuFe | ~Cu18Fe4BiS16 |
Optical Data of UM1984-25-S:BiCuSe
Anisotropism:
colour effect: reddish-brown tints (less anisotropic than emplectite)
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 440nm | 48% |
| 540nm | 50% |
| 720nm | 47% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 50%.
Chemistry of UM1984-25-S:BiCuSe
Mindat Formula:
Cu3+xBi5-x(S,Se)9
Element Weights:
Elements listed:
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.22 Å | (40) |
| 3.13 Å | (100) |
| 2.72 Å | (90) |
| 1.967 Å | (60) |
| 1.941 Å | (50) |
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 UM1984-25-S:BiCuSe
mindat.org URL:
https://www.mindat.org/min-47763.html
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References for UM1984-25-S:BiCuSe
Reference List:
Localities for UM1984-25-S:BiCuSe
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.
Tajikistan | |
| Kovalenker et al. (1984) +1 other reference |
